Elasto-Plastic Analysis of Frame Structures under Large Displacement-Rotation Deformations

Dong Quan Yang; Hong Peng

doi:10.4028/www.scientific.net/AMR.243-249.5968

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249Elasto-Plastic Analysis of Frame Structures under...

Elasto-Plastic Analysis of Frame Structures under Large Displacement-Rotation Deformations

Abstract:

A finite element program for elasto-plastic analysis of 3D beams and frame structures under large displacement/rotations is developed. The element is Timoshenko beam element based on mechanics of continuum. Constitutive equations for large displacements/rotations in elastic stage are expressed in an explicit way which is suitable for programming. The modification of constitutive equation is presented for the analysis of elasto-plastic problems. A fiber model is adopted for the calculation of stiffness matrix and internal forces. For solution of nonlinear finite element equations, general displacement control method and semi-modified stiffness matrix method is adopted. The results of numerical experimentation show that the program work well for 3D beams and frame structures under elasto-plastic large displacement/rotations.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

5968-5974

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.5968

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Online since:

May 2011

Authors:

Dong Quan Yang, Hong Peng

Keywords:

Elasto-Plastic Analysis, Finite Element Model (FEM), Large Displacement/Rotation, Total Lagrangian Formulation

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