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

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 243-249)

Edited by:

Chaohe Chen, Yong Huang and Guangfan Li

Pages:

5968-5974

DOI:

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

Citation:

D. Q. Yang and H. Peng, "Elasto-Plastic Analysis of Frame Structures under Large Displacement-Rotation Deformations", Advanced Materials Research, Vols. 243-249, pp. 5968-5974, 2011

Online since:

May 2011

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Price:

$35.00

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