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Techniques and Tools for Product-Specific Analysis Templates

Towards Enhanced CAD-CAE Interoperability for Simulation-Based Design and Related Topics

Reference

R. S. Peak (October 9, 2001) Seminar. NIST, Gaithersburg, Maryland.

Abstract

Design engineers are becoming increasingly aware of “analysis template” pockets that exist in their product domain. For example, tire-roadway analysis templates verify handling, durability, and slip requirements, and thermal resistance and interconnect reliability templates are common to electronic chip packages. Such templates may exist in the form of paper-based notes and design standards, as well as loosely structured spreadsheets and electronic workbooks. Often, however, they are not articulated in any persistent form.

Some CAD/E software vendors are offering pre-packaged analysis template catalogs like the above; however, they are typically dependent on a specific toolset and do not present design-analysis idealization associativity to the user. Thus, it is difficult to adapt, extend, or transfer analysis template knowledge. Domain- and tool-independent techniques and related standards are needed.

This seminar overviews emerging analysis template theory and methodology that addresses such issues. Patterns that naturally exist in between traditional CAD and CAE models are summarized, along with their embodiment in a knowledge representation known as constrained objects. Industrial applications from airframe structural analysis, circuit board thermomechanical analysis, and chip package thermal resistance analysis are given.

This approach enhances knowledge capture, modularity, and reusability, as well as improves automation (e.g., decreasing total simulation cycle time by 75%). The object patterns also identify where best to apply technologies like STEP, XML, CORBA/SOAP, and web services. We believe further benefits are possible if these patterns are combined with other efforts to enable ubiquitous analysis template technology.

Documents

Slides: ppt