Optimum design of carbon/carbon ablative property based on genetic algorithm  

作　　者：白光辉 孟松鹤 刘洋 韦利明 姜澎 

机构地区：[1]Cernter for Composite Materials,School of Aerospace and Aeronautics,Harbin Institute of Technology [2]Division of Science and Technology,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2009年第5期661-664,共4页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.1057244)

摘　　要：An optimum design model has been proposed for carbon/carbon ablative property based on genetic algorithm,in which the optimum parameters are the number of woven satins,K of fiber bundles,layers per unit height,the average distance of puncture fibers in Z direction and Ply Stacking angle,and the constraint conditions are the density and diameter of carbon fibers and the density of carbon matrix.The results demonstrate that after optimization,the overall height of the ablative carbon/carbon surface is reduced by 56.5%,the standard deviation is reduced by 34.9% and the surface roughness is reduced by 12.6%,which suggests the remarkable improvement of ablative homogeneity.The present investigation can provide practical methodology for the optimum design of carbon/carbon ablative property and the development of new carbon/carbon composites.An optimum design model has been proposed for carbon/carbon ablative property based on genetic algorithm, in which the optimum parameters are the number of woven satins, K of fiber bundles, layers per unit height,the average distance of puncture fibers in Z direction and Ply Stacking angle, and the constraint conditions are the density and diameter of carbon fibers and the density of carbon matrix. The results demonstrate that after optimization, the overall height of the ablative carbon/carbon surface is reduced by 56. 5% , the standard deviation is reduced by 34. 9% and the surface roughness is reduced by 12. 6%, which suggests the remarkable improvement of ablative homogeneity. The present investigation can provide practical methodology for the optimum design of carbon/carbon ablative property and the development of new carbon/carbon composites.

关 键 词：carbon/carbon composites ablative property optimum design genetic algorithm 

分 类 号：O242.23[理学—计算数学] TB332[理学—数学]