A new generation of nonlinear finite element analysis techniques

✍ Scribed by Technical Fellow Y C Liu; Corporate Fellow J S Solecki; Marketing Specialist E D Underwood

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 571 KB
• Volume: 1
• Category: Article
• ISSN: 1365-0556
• DOI: 10.1002/pse.2260010319

✦ Synopsis

Abstract

This article surveys the development of nonlinear contact and solution‐control capabilities in an industrial finite element code, ANSYS 5.4. Various techniques for enhancing the ease‐of‐use and robustness of the capabilities are discussed. Among these are the use of solution feedback and automatic adjustments, consistent tangent, and a combined penalty function and Lagrange multiplier method for contact analysis. It is argued that a future direction for finite element code development should be to provide easy‐to‐use nonlinear capabilities so that inexperienced finite element users can solve nonlinear problems independently without assistance from other sources such as high‐end analysts or experienced users.