摘要
探讨了基于应力及其灵敏度数的平面连续体结构拓扑优化,在此基础上针对优化过程中由于棋盘格问题和模型离散后优化结果边缘呈现锯齿状,导致加工和制造困难问题,提出了利用成熟的逆向工程方法来重构优化结果的方案,在不增加计算负担的前提下,很好地解决了由于有限元方法离散和数值计算不稳定所带来的制造加工困难问题。
Topological optimization of planar continuous bodied structure was probed based on stress and its number of sensitivity. Taking this as a base and aiming at the problem due to chessboard check in the course of optimization and the problem due to the edge presents a saw tooth shape of optimized result after model discreteness that leads to difficulties of processing and manufacturing, the scheme of reconstructing the optimized result utilizing the matured method of reverse engineering was put forward. Under the premise of not increasing the calculation burden, the problems of manufacturing and processing difficulties brought about by discreteness of finite element method and instability of numerical value calculation were solved quite properly.
出处
《机械设计》
CSCD
北大核心
2007年第1期40-43,共4页
Journal of Machine Design
关键词
拓扑优化
渐进结构优化
棋盘格
逆向工程
topological optimization
evolutionary structural optimization
chessboard check
reverse engineering
