Luyi Liang : Comparative Study of ANM Method and Co-rotational Coordinate Method (CR Method) for Structural Geometric Nonlinear Analysis

Abstract

The core of the seminar is a systematic comparative study on structural geometric nonlinear analysis based on the asymptotic-numerical method （ANM） and the Co-rotational Coordinate Method (CR method). It clarifies the performance differences between the two methods in the simulation of different element types and practical engineering applications, providing theoretical and practical references for subsequent related structural analysis work.

Firstly, for beam elements simulating structures with complex deformation characteristics (such as frame structures with post-buckling behavior), a comprehensive comparison of the ANM and the CR method is conducted from three core dimensions: calculation accuracy, calculation efficiency, and convergence. It analyzes the advantages and disadvantages of the two methods in capturing the complex deformation response of beam elements.

Secondly, focusing on the application of solid elements in simulating structures with complex deformation behavior, the performance of the two methods is further compared around the three key indicators of calculation accuracy, calculation efficiency, and convergence. It explores the impact of element type differences on the analysis effects of the two methods, improving the comprehensiveness of the comparative study.

Finally, combined with practical engineering application scenarios, taking the inverse finite element method as the specific application carrier, the calculation efficiency of the ANM and the CR method in engineering practice is mainly compared, clarifying the applicability and application value of the two methods in practical engineering applications.

About the speaker

Luyi Liang is a third-year doctoral student at Changsha University of Science and Technology (China).

On Microsoft Teams

You can also attend the seminar via Microsoft Teams.