Abstract
The purpose of this article is to explore in details the theoretical and numerical aspects of the behavior of spatial trusses, undergoing large elastic and/or elastoplastic strains. Two nonlocal formulations are proposed in order to regularize the problem, avoiding the mesh dependence of the numerical response. The classical example of a simple bar in tension is chosen to explore the various features of the proposed models and to highlight the interplay between material and geometrical nonlinearity in the localization.
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Aknowledgement The financial support of FAPESP, a Brazilian research funding agency and of the italian miur, project prin 2003082105, are greatly appreciated.
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Driemeier, L., Comi, C. & Proença, S. On nonlocal regularization in one dimensional finite strain elasticity and plasticity. Comput Mech 36, 34–44 (2005). https://doi.org/10.1007/s00466-004-0640-7
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DOI: https://doi.org/10.1007/s00466-004-0640-7