期刊
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
卷 28, 期 4, 页码 768-776出版社
GAUTHIER-VILLARS/EDITIONS ELSEVIER
DOI: 10.1016/j.euromechsol.2008.10.009
关键词
Micromechanics; Finite element; Thermal residual stress
类别
资金
- Engineering and Physical Sciences Research Council [EP/F02911X/1] Funding Source: researchfish
- EPSRC [EP/F02911X/1] Funding Source: UKRI
A three dimensional (3D) micromechanical study has been performed in order to investigate local damage in UD composite materials under transverse and longitudinal tensile loading. In particular, the influence of non-uniform distribution of fibres in RVEs (representative volume element) with a hexagonal packing array and the effects of thermal residual stresses has been investigated. To examine the effect of inter-fibre spacing and residual stress on failure, a study based on the Maximum Principal Stress failure criterion and a stiffness degradation technique has been used for damage analysis of the unit cell subjected to mechanical loading. Results indicate a strong dependence of damage onset and its evolution from the fibres position within the RVE. Predicted mechanical properties, damage initiation and evolution are also clearly influenced by the presence of residual stress. (c) 2008 Elsevier Masson SAS. All rights reserved.
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