Optimization of Composite B-Pillar Considering Appropriate Stacking Sequence with Genetic Algorithms

In this thesis for improving in samand behavior in besides collision، internal part of B-pillar of SAMAND modeling by use of laminated composite made up of carbon – epoxy and simulation beside collision test based on FMVSS-214 standard. This survey is performance on finite element analys and show the condition and quality of stacking sequence of difrent layers. Since change in orientation layers cause of change in structure resistance affected by collision، using of Genetic Algurithm and neural lattice get better result for minimum transfiguration of B-pillar. Also to achive the steady stacking sequence use the result of 49 Taguchi’s studys and simulation for 8 layers in -90 to 90 degree and 120 Hamersly’s tests for 8 layers in 0 to 90 degree، and 120 Hamersly test for 4 layers in 0 ti 90 degree. Based on this result and gained data from optimization algoritm and complet survey of test result، the best collision behavior of structure occure in 40 to 50 degree stacking sequence. Stracture we offer in this study own minimum transfiguration and displacement. And System in this manner، exist maximum safty and security for passengers that is the most important chalengein besides couission.