Elasto-plastic stress analysis in a composite material with a hole

ABSTRACT This study is about elasto-plastic stress analysis in a composite material with a hole. While the thesis we studied at two sîeps.Firsîly we produced a composite material and found its properties. After this process, we begun theoretical study.It has two steps. Firstly we studied about elastic solution.Elastic solution gave us only elastic stresses at composite material. Then we started at elasto-plastic solving.Because real materials did not have only elastic deformation.If we know that when materials are in plastic region, we use a material safety. Elasto-plastic solution is made by finite element modelling. If the stress at a node is in the plastic region then, we calculated plastic stress.Some examples are added last pages. According to that solutions boundary of yielding points are symmetric to reinforcing directions Difficulty of this study is fabricating. But we can make it successfully. Necati Ataberk 1 996 January/İzmir