Effect of material nonlinearity on symmetric aluminum metal-matrix laminated composite beams under a bending moment
No Thumbnail Available
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
In this study, an elastic-plastic stress analysis is carried out on symmetric laminated composite beams subjected to a bending moment. The composite beam is to be strain hardening. The Tsai-Hill theory is used as a yield criterion in the solution. The Bernoulli and Euler hypotheses are assumed to be valid. The beam lay-up sequences are chosen as [90degrees/0degrees](s), [30degrees/-30degrees](s), [45degrees/-45degrees](s), and [60degrees/-60degrees](s). The bending moment starting plastic yielding is found to be highest for [30degrees/-30degrees](s) orientation. sigma(x) residual stress component is found to be highest at the upper and lower surfaces. However sigma(x), residual stress component becomes the highest at the elastic and plastic boundary for further expansion of the plastic region. The transverse displacement is obtained at the free end, numerically.