Structural Engineering and Mechanics

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Elasto-plastic analysis using shell element considering geometric and material nonlinearities

  • Prasad, N. Siva (Department of Mechanical Engineering, Indian Institute of Technology) ;
  • Sridhar, S. (Department of Mechanical Engineering, Indian Institute of Technology)
  • Published : 1998.03.25
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Abstract

An elasto-plastic finite element procedure using degenerated shell element with assumed strain field technique considering both material and geometric nonlinearities has been developed. This assumes von-Mises yield criterion, von-Karman strain displacement relations and isotropic hardening. A few numerical examples are presented to demonstrate the correctness and applicability of the method to different kinds of engineering problems. From present study, it is seen that there is a considerable improvement in the displacement valuse when both material and geometric nonlinearities are considered. An example of the spread of plastic zones for isotropic and anisotropic materials has been illustrated.

Keywords

References

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Cited by

  1. Material and geometrical nonlinearities FEM and BEM analyses vol.38, pp.3, 2002, https://doi.org/10.1016/S0168-874X(01)00058-0
  2. Finite element linear and nonlinear, static and dynamic analysis of structural elements – an addendum – A bibliography (1996‐1999) vol.17, pp.3, 2000, https://doi.org/10.1108/02644400010324893