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Damage coupled elasto-plastic finite element analysis of a Timoshenko layered beam

โœ Scribed by S. Chandrakanth; P.C. Pandey

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
392 KB
Volume
69
Category
Article
ISSN
0045-7949

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โœฆ Synopsis

Based on continuum damage mechanics (CDM), the paper presents a non-linear ยฎnite element formulation for a Timoshenko beam. A layered approach has been adopted to simulate the progressive growth of damage and plasticity from extreme ยฎbers towards the neutral axis. An isotropic continuum damage 1-D model has been derived for damage evolution for material like Al 2024-T3. Coupling damage with J 2 based plasticity, a coupled constitutive relation has been developed within the framework of the internal variable theory of thermodynamics. Incremental ยฎnite element analysis has been done on beams to predict the failure load based on the CDM criterion and the same has been veriยฎed based on the Sih's strain energy density criterion.

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