Category "Siemens PLM"

Many years ago, or so it seems, one of the methods for checking clearance and interference’s was performed through the use of drawings. By cutting sections through the parts in an assembly drawing, the detail of that assembly could be shown in a section view, and then distances could be measured between parts to determine whether clearance objectives where being met. This task involved tools such as a compass, a drafting pencil, and a scale along with the ability to draft accurately. Another method was to build a full size scale mockup, or buck, of the part or assembly to visually check for interference’s and you could also use a wide variety of tools to take measurements.

While there may be nostalgia for these methods, modern CAD tools and technology can accomplish the same tasks in far less time. By assembling parts and cutting sections through the CAD data, we can then electronically measure for clearance between parts and assemblies. This process is much faster than with drawings, and can greatly improve productivity. However, what if you had to find clearance issues within a very large data set like an engine, or transmission, or an instrument panel? This amount of data loaded into a CAD session can be difficult to work with due to the model size and complexity of the parts within these assemblies. Also, the tasks of cutting sections and taking measurements required for the clearance analysis is a skill only possessed by the proficient few.

Because of this and other problems, solutions were created that transform CAD data into lightweight tessellated data files. By translating the data into a JT (Jupiter Tessellation), or similar file, the viewer can read very large assemblies quickly and perform a multitude of tasks on that data.

One such viewer is Siemens Teamcenter Visualization Mockup, better known as VisMock. This tool is more than just a viewer, it’s a real-time digital mockup tool that you can use to detect and solve design issues early in your product lifecycle, getting you from art to part faster and cheaper than ever before! And, VisMock is a very intuitive and easy software to learn and use. With VisMock, the learning curve is minimal in comparison to learning a CAD system, so this lends itself well to those non-expert users who are looking for quick answers to design issues. For example, a non-CAD user can go into VisMock and perform a Clearance Analysis, and in a matter of minutes have the answer to a nagging question on whether there is a clash or clearance in their assembly, or to adjacent parts and assemblies.

VisMock is used in Automotive, Aeronautic and Aerospace, Ship Building, and Consumer Product industries as a design verification tool that can reduce or eliminate the use of rapid or traditional prototypes. This can further reduce the cost of bringing a product to market.

Teamcenter Visualization is available in four different levels: Base, Standard, Professional, and Mockup. Each level builds upon the one before it. Siemens offers Teamcenter Visualization this way so that it is scalable, so as your company grows, so can your visualization software.

Some of the key benefits for using Teamcenter Visualization Mockup:

  1. User friendly application that gives quick results for aiding in critical decisions across all disciplines within your company as well as your entire enterprise.
  2. Reduce cost by reducing the need for traditional and rapid prototypes.
  3. Making use of your digital twin moves critical decisions earlier in the product lifecycle where making changes to CAD data is easier and cheaper than correcting mistakes to a physical product.
  4. Four different levels to fit your current needs and for scalability.

So, can your business benefit from faster decision making by a wider range of participants? Teamcenter Visualization can facilitate this requirement and bring substantial benefits.

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Tata Technologies is a Siemens Platinum Smart Expert Partner indicating our validated expertise in NX-CAD.

There have been quite a few market whispers about MSC Software and its products since the company’s acquisition by Symphony Technologies few years back. It’s flagship pre-processing tool called MSC Patran has been under spotlight since the introduction of new equivalent tool by MSC Software (now Symphony) called MSC Apex.  MSC Software adopted a similar strategy during 2008-09 by introducing a bunch of multi-disciplinary pre-processing tools such as MD Patran and later SimExpert. All these products had a very long gestation period with little luck in making a long term market presence.

Many veteran FEA analysts, particularly in aerospace domain are well familiar with the pains of using MSC Patran in geometry cleaning, meshing and composite modeling environments. The objective of this blog is to take a deep dive into these issues and demonstrate how an alternative product called Femap from Siemens can alleviate many of these unaddressed issues.

Femap has been a part of FEA community since more than 30 years and it was developed with the mission of having a dedicated PC based pre and post processor for engineering FEA. It is solver neutral as well as CAD independent solution that offers high performance modeling and analysis capabilities to solve toughest engineering problems.

  • Mid surface extraction

Almost all FEA pre-processors have this embedded tool but as the geometry becomes more and more complex, many of them fail to extract mid surfaces correctly. The automatic feature of Femap makes this job not only easy with minimum number of clicks but offers higher fidelity as well. User does not need to select opposite faces multiple times in case thickness changes in space. Just enter the maximum thickness value a part has and Femap does the rest for you. Its further possible to combine the mid surfaces so they appear as a single entity in the history tree.

 

  • Tools in the meshing toolbox

Before creating a mesh, the meshing toolbox offers multiple value added features to clean and modify the underlying geometry for a better mesh.

  • Project curve:

This features splits the extracted surface at the boundary of thickness transition so that the underlying elements are able to update the shell thickness property as the thickness changes on either side of the split.

  • Feature removal options

There are many features in CAD that may not be needed in FEA analysis and holes are the prominent ones. It is possible to close holes and similar geometries with just a click, if needed. By default, a point entity is created at the geometric center of the closed holes to make sure a kinematic constraint can be applied at those points, if needed.

  • Pad and washers

These features allow for mesh refinement in the vicinity of holes and depending on the geometry of holes, either a washer (circular) or a pad (square) option may be chosen. The feature creates iso-parametric meshes around the holes based on the distance of influence defined by the user. This is an “on the fly” feature that updates an existing mesh every time this feature is executed instead of creating a new mesh.

  • Dynamic node repositioning

This is a very handy feature to improve mesh quality on the fly. With the mesh quality contour option active, user can dynamically move any node of the mesh either on surface or on a curve until its quality improves which is instantly perceived by the user as element color changes from red to green. The effect of this tool is very local and only a few elements in the vicinity of selected node are considered at a time.

  • API’s for automating repetitive tasks

Most of Nastran based BDF’s include multiple RBE’s. Femap understands the pain of creating these RBE’s manually and applying boundary conditions to them. The custom tools provide an option to create RBE’s by selecting peripheral curves or nodes. The independent nodes are created automatically. Using API’s it is further possible to completely automate the RBE generation process.

The grouping options in custom tools provide an option to automatically define a group for independent nodes of all the RBE2’s in the model. This group can later be used to create constraints on RBE’s without picking each independent node individually.

 

So many welds, so little time… and that’s how long it takes to create them using NX Weld Assistant… very little time.

In addition to the weld types shown in the image above, you have the option to create custom weld types giving you the ability to model any type of weld possible.

One type of custom weld is an extension weld. This type of weld is started and stopped beyond the limits of the parts being welded as seen in the image below.

To create this weld, we will simply create a line weld in the usual way (see image below) and then use synchronous modeling + move face to grab and extend the face that makes up each end of the weld.

Key benefits to modeling welds in Cad include:

  • Provides a key piece of information necessary for a complete Digital Twin.
  • Mass properties inclusion (Weight and Volume).
  • Easy to visualize.
  • Easy to validate for correct location using Weld Advisor.
  • Easy to convey information via a Drawing or PMI
  • Available for inclusion into CAE analysis
  • Available for process planning
  • Available for robot programming
  • Significant time savings compared to manual application of welds
  • Having the ability to create and validate the welds in CAD ensures quality data is being sent to manufacturing thereby reducing the amount of rework.

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There is so much more to this command than welding. Not only is there a full range of weld types, but you can also model beads of adhesives, glue, and mastic as well as fasteners like rivets for example. Basically there are three categories in Weld Assistant for joining parts, they are: discrete welds, line welds, and adhesives. Normally a rivet is a type of fastener, but they are included as a custom weld in Weld Assistant.

In this post, let’s take a look at how to model rivets. We will create a custom spot weld to mimic a rivet. We will start by configuring a custom weld spot under File + Utilities + Customer Defaults.

  • From the Customer Defaults window, select Weld Assistant + Point Locator and then select one of the Custom tabs.
  • Set the Solid Display to Cylinder and give the custom Point Locator a name… Rivet for example.
  • Set the other attributes accordingly, and then select OK to finish the configuration.

Now create a Rivet the same way you would create a Resistance Weld Spot.

  • From the Weld Assistance command select Weld Point Wizard.
  • From the Weld Point Wizard block:
    • Select your Method
    • Set the Type to the new custom Point Locator you just created (i.e. Rivet)
    • Select Next.
  • Select the Face Sets and then select Next
  • Select the points you want to create Rivets at and then select Next.
  • Select Finish to place the Rivets.

If the Rivets don’t show up at first, then select the Solid Weld Point Display option.

Key benefits to modeling welds in Cad include:

  • Provides a key piece of information necessary for a complete Digital Twin.
  • Mass properties inclusion (Weight and Volume).
  • Easy to visualize.
  • Easy to validate for correct location using Weld Advisor.
  • Easy to convey information via a Drawing or PMI
  • Available for inclusion into CAE analysis
  • Available for process planning
  • Available for robot programming
  • Significant time savings compared to manual application of welds
  • Having the ability to create and validate the Rivets in CAD ensures quality data is being sent to manufacturing thereby reducing the amount of rework.

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Product and Manufacturing Information (PMI) consists of non-geometric data, that is attached directly to a 3D CAD model to define geometric dimensioning and tolerancing (GD&T), engineering and manufacturing specifications, dimensions, and text.  PMI is part of Model Based Definition (MBD) and together these two elements are a part of a Digital Twin.

Applying PMI to a 3D model can reduce or eliminate the use of 2D drawings and can be used downstream to perform tolerance analytics and coordinate-measuring machine (CMM) inspection.

PMI is a command within NX that gives you the ability to create/attach dimensions and annotations to define the 3D model, and requires model views similar to the views on a drawing.  These dimensions and annotations are associative to the 3D geometry, and if it is decided that a 2D drawing is required, then the PMI can be inherited from the 3D model and automatically applied to the drawing views.

We think of MBD and PMI as new technologies and 2D drawings as “old school,” but there are valid uses for a 2D drawing.  Given the ability in NX to quickly create 2D drawings with associative dimensions inherited from the 3D PMI… this gives you the best of both worlds.

The image below demonstrates what PMI looks like in a 3D model view, and the next image down demonstrates the inherited PMI in a 2D drawing view:

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NX Realize Shape is a powerful and intuitive subdivision design tool that makes use of primitive shapes to create concept design models.  In the image below you can see a sphere has been chosen, but there are a number of other shapes to select from such as cylinder or block to name a few.

These primitive shapes can be placed over top of background data like sketches or even art work similar to what you see in the image above.  When a primitive shape is created, a cage is automatically created that surrounds the shape.  The shape can be morphed into designs by transforming that cage.  By selecting on, and dragging the cage elements (lines or points), you can mold the shape to fit the background image.

 

As seen in the image above, you can split a face into smaller faces (subdivide) in order to create more cage elements. This gives you greater control of the cage anytime more detail is required in a given area of your design.

By selecting cage elements (lines or points) and dragging them up or down, left or right, the concept designer is able to morph a simple shape into a complex form in a relatively shorter period of time versus having to work with .

Why do we promote the use of Realize shape?

Simple, this model represents the birth of the digital twin.  This digital twin is then used for detailed design, documentation, validation, simulation, and all the way to traditional or additive manufacturing… all within a single unified environment like NX… means you are going to use trusted data from concept to manufacturing… without requiring conversion or translation, and this is going to shorten your innovation lifecycle, getting you from concept to market faster!

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Does your engineering organization struggle with the following challenges?

  1. Crucial engineering data in several different systems resulting in disconnected information
  2. Manual processes that rely on human intervention
  3. Multi CAD environment requiring translations and inefficient transactions
  4. Lack of visibility of data for downstream consumers

If these challenges are something you face everyday, then you probably have considered a Product Data Management (PDM) system. This will store all your data in a single repository and help with automating workflows. But buying and implementing a PDM system seems costly and time consuming; how are you going to get started?

Teamcenter Rapid Start is the answer to all these questions. It is a preconfigured installation of Teamcenter with the following features:

  1. By using preconfigured templates, the system is simple and fast to deploy
  2. Best in class industry configurations to support engineering processes
  3. Included training allowing users to quickly become familiar with the system
  4. An implementation can be up and running to full productivity in two weeks

Lets have a look at all the components that make up a Teamcenter Rapid Start installation:

Multi-CAD and ECAD data managementFind, reuse and share data across a multi-CAD design chain

Teamcenter Rapid Start Multi-CAD data management capabilities enables you to effectively and efficiently manage, control and share MCAD data across the entire design and supply chain. Regardless of the CAD tools used, this environment provides you with a single view of product data as well as engineering processes and status. Teamcenter visualization extends this into an even more collaborative environment. Teamcenter handles all major CAD systems including NX, Solidworks, CATIA V5 and Autodesk Inventor.

Document management Create and manage documents in conjunction with product development

Teamcenter Rapid Start includes standardized document management features so you can create and manage documents in conjunction with PDM processes and data.

Related documents are associated with products, and you can synchronize the attributes between documents and PDM.

Teamcenter Rapid Start delivers a standard integration with Microsoft Office to extend the scope and coverage to the desktops of numerous professionals and users outside of the Engineering department. This includes the managed creation and update of Technical Publications, process sheets, Customer Requirements, manufacturing set-ups, test specifications, and many other Document Management applications.

Simple process managementPreconfigured processes like design release and change, based on PDM best practices

Teamcenter Rapid Start provides you with basic workflow capabilities to streamline product development by automating and synchronizing processes. You can:

  1. – Review, comment and approve/reject parts and documents
  2. – Capture and audit date and timestamp information
  3. – Manage cross-functional review teams (notifications, quorums, etc.)
  4. – Automate vital business processes and reduce manual intervention

Preconfigured roles and functionalityStart quickly with best practices to automate everyday tasks across the business

Teamcenter Rapid Start offers preconfigured groups and roles with appropriate access permissions to simplify common tasks.

  1. – The standard set of roles support the tasks done every day in an organization
  2. – For example — start a new project, issue an ECO or review a design
  3. – These tasks are easily started using a number of shortcut links in the “I Want to” area of the user interface.

Further, the tasks are automated by ‘Wizards’ to make them smooth and natural, and consistently repeatable in operation for reliable, efficient processes.

Teamcenter Rapid Start can get you up and running with PDM quickly by offering:

  1. A single installation process for server and client results in in a fully configured environment ready to use
  2. Standard organization and roles, preconfigured database, workflows, reports, security model, … so you have the capabilities you need as soon as you complete the installation
  3. Ongoing updates and support are simple, fast and effective

The other huge advantage of Teamcenter Rapid Start is that it offers a seamless path to complete PLM – supported by Teamcenter, the industry leader in PLM systems.

Contact us today to learn more about Teamcenter Rapid Start and get started with improved data management.

Digitalization is a digital process that ties all phases (ideation, realization and utilization) together through a digital thread that has the intelligence of the products and its lifecycle processes and connects to smart devices which can interpret and react to the information. This digitalized innovation environment is what will provide todays’ and the future manufacturers with sustainable competitive advantage.

Siemens PLM offers a suite of technology solutions to create Model Based Definition (MBD) and to consume it in the downstream processes to support Model Based Manufacturing (MBM). MBD is a complete digital definition of the product within the 3D model. One of the key element that contributes to MBD is PMI or “Product and Manufacturing Information”.  It Conveys information such as geometric dimensioning and tolerancing (GD&T), 3D annotation (text), surface finish , material specifications etc.  NX PMI has an advanced toolset for creating rich PMI content that enables product development companies to capture and associate this design & manufacturing requirements directly with the 3D model, and share this information with other development applications . This enables the manufacture and inspection of the product without need for traditional 2D drawings.

NX PMI Objectives include

  • Capture and communicate design and manufacturing intent
  • Streamline the PMI authoring process
  • Facilitate and maximize downstream reuse
  • Remove the effort and cost of manually producing drawings
  • Support MBD and MBM initiatives

The solution capability highlights include

Dimensioning 

  • Smart dimensioning commands infer method based on selection
  • Dimensions are created in model views based on a defined annotation plane
  • Simplify authoring of dimensions by defining Feature Dimensions and Sketch Dimensions as PMI with “Display as PMI”
  • NX supports the import and export of semantically rich PMI from JT

Annotation 

  • Various types of PMI annotations allow users to specify important manufacturing requirements in the forms of
    • Note, Datum Feature Symbol, Datum Target, Feature Control Frame, Surface Finish, Weld (including Weld Assistant) , Balloon, Custom Symbols

Specialized Notes 

  • A variety of specialized PMI notes that allow users to extract or display specific information
  • Targeted at specific/specialized uses like
    • Coordinate, General & Specific Notes, Enterprise Identification, Material Specification, Part Identification, Fabrication Labels, Process Specification, URL Note, User Defined , String, Number and Integer Notes

Supplemental Geometry 

  • Per 3D Annotation Standards
  • Support for PMI Centerlines and Center Marks. Interactive control over extensions
  • PMI Regions are used to indicate or designate areas of a model for special purposes
    • Limited application of a tolerance
    • Show the area affected by a datum target
    • Designate a standalone region not referenced by other PMI annotations

Sectioning, Mirroring & WAVE 

  • PMI (Lightweight) Section and Legacy PMI Section
    • Options for Single Plane, Parallel Planes and Box Type
    • Can be inherited onto a drawing
    • Crosshatch derived from material
    • Cutting Plane Symbol Support
  • Support for Mirror PMI and Model Views & Support for reposition, delete and hide the mirrored PMI objects
  • WAVE PMI Linker: Include Body and Topology

Search & Reports 

  • PMI Search locates PMI display instances based on specific criteria
    • Specify PMI Type , Define Range ,Designate Output Preference
  • PMI Report generates a spreadsheet detailing specific PMI content
  • Find PMI Associated To Geometry displays a summary of PMI associated with selected geometry

Security Markings 

  • Per 3D Annotation Standards
  • PMI Security Markings can be applied and appear in an Information window when the part file is opened
  • Markings provide an acknowledgement mechanism before the part is loaded
  • Customizable Messages for
    • Government Security Information
    • Company Proprietary Information
    • Export Control

GD&T Validation

  • Verification that PMI GD&T on a part is compliant with the GD&T standards (ISO and ASME)
  • Syntactic and Semantic checks
    • Validation for FCFs and Datum Feature symbols
  • Results are presented in HD3D for improved visual feedback

 

 

 

In Active Workspace 3.4, Siemens PLM has made some significant improvements to search capabilities. Here are some of the highlights

Numerical Range Filters

Users can now filter and narrow down search results by entering a range of values for numerical properties in the filter panel so that they  get results only in the range of what they’re have specified. For example find bolts with a length between 60 and 100 mm.  They can also use open ended ranges by leaving the lower or upper range value blank.  This is supported for both classification & object properties in both global and in-context search using  integers and real numbers.

Pre-filter for Add Objects 

Active Workspace 3.4 allows application of property based pre-filter for in-context search.  This provides a better control of allowable choices when adding related objects with the ability to retrieve context sensitive search results via configuration.  The configuration is to set a “query type” pre-filter in the XRT definition of the “Add” command, which can be based on any property value. User can always widen the scope by deactivating the filter.

Search for Business Objects based on Form Properties

Users can now search and filter on properties of Master Forms and other Forms attached to any item revision without using compound properties . Master forms are supported OOTB, other forms (including custom forms) require adding a reference to the form storage class . The properties from forms can be configured to display as Form Name.Property or  only Property . This is used in filter panel and search string syntax. This can be also used in conjunction with dynamic compound properties (DCP) to avoid making schema changes to enable search and filters for properties on related forms.

With every release of Active Workspace, Siemens PLM keeps adding more enhanced capabilities for change management process execution, Active Workspace 3.4  is no exception.

The first enhancement is a simplified overview of change that includes most relevant information pertaining to the change.  The Consolidated change overview now includes; change description, details, participants, and originating changes.  There is a new visual status bar showing change maturity progress in overall maturity process. This progress chart helps users to understand and quickly determine the change maturity.  There is also an easily accessible change summary that shows adds, removes, and replaces. The Impacted/ Solution items added or Lineage set via Active Workspace UI  or the BOM changes done via rich client from structure manager in supersedure window are reflected in the new change summary. These easy to interpret change details help users to understand the full impact of change before they make decisions on it.

The Active Workspace 3.4 relationship browser is now improved to show all associated change objects and their relationships in the interactive relations browser.  This helps users to easily understand change objects and their hierarchical relations (Implements, Implemented by, dependencies) ,   find change objects and  other business objects  relations (Problem Items, Impacted Items, Solution Items) and also relation between items (Lineage).

These new capabilities makes Active Workspace an even more preferred user interface for change management adoption.

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