Load bearing capacity of thin shell structures made of elastoplastic material by direct methods

Authors

  • Thanh Ngoc Tràn
  • R. Kreißig
  • M. Staat

Abstract

A method is introduced to determine the limit load of thin shells using the finite element method. The method is based on an upper bound limit and shakedown analysis with the elastic-perfectly plastic material model. A nonlinear constrained optimisation problem is solved by using Newton’s method in conjunction with a penalty method and the Lagrange dual method. The numerical investigation of a pipe bend subjected to bending moments proves the effectiveness of the algorithm

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Published

2019-08-01

How to Cite

Tràn, T. N., Kreißig, R. and Staat, M. (2019) “Load bearing capacity of thin shell structures made of elastoplastic material by direct methods”, Technische Mechanik - European Journal of Engineering Mechanics, 28(3-4), pp. 299–309. Available at: https://journals.ub.ovgu.de/index.php/techmech/article/view/851 (Accessed: 21 November 2024).

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