Strong-Form Formulated Generalized Displacement Control Method for Large Deformation Analysis

P Yang, Jian Yu Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The traditional analysis of geometric nonlinearity is mostly based on the weak-formulated Galerkin method such as the finite element method. The element nature has limited its application as a result of numerical integration in the governing equation and quality control of deformed mesh. In the middle of 1990s, the meshfree methods have been developed and become one leading research topic in computational mechanics. Especially, the strong form collocation methods require no additional efforts to process numerical integration and impose Dirichlet boundary condition, thereby making the collocation methods computationally efficient. In the incremental-iterative process, how to accurately reflect the change in the slope of the load-deflection curve of the structure and remain numerically stable are of major concerns. Thus, we propose a strong-form formulated generalized displacement control method to analyze geometric nonlinear problems, where the radial basis collocation method is adopted. The numerical examples demonstrate the ability of the proposed method for large deformation analysis.

Original languageEnglish
Article number1750101
JournalInternational Journal of Applied Mechanics
Volume9
Issue number7
DOIs
StatePublished - 1 Oct 2017

Keywords

  • generalized displacement control method
  • incremental-iterative algorithm
  • large deformation
  • Meshfree method
  • radial basis function

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