论文信息 - Rudimentary considerations for effective quasi-Newton updates in nonlinear finite element analysis

Rudimentary considerations for effective quasi-Newton updates in nonlinear finite element analysis

Abstract The quasi-Newton update method is employed as an option to accelerate the convergence and improve the overall effectiveness of the modified Newton's iteration. When the Broyden-Fletcher-Goldfarb-Shanno (BFGS) method was implemented and tested in the general-purpose finite element analysis program MSC/NASTRAN, our experience showed that the implementation method and adjustment of parameters had a significant impact on the program's performance. This paper reviews the rudiments of the BFGS update method and proposes an efficient implementation scheme based on extensive testing and parametric studies.

Sang H. Lee | Sang H. Lee

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