摘要
柔性机构应用于变弯度自适应机翼可以实现机翼外形随飞行状态的改变而发生连续平滑变形,具有很好的应用前景。从柔性构件的材料属性出发,基于载荷路径的遗传算法,从单一材料构件和多材料组合构件两个方面,对某机翼前缘进行拓扑优化,并对多材料组合变形结果进行ANSYS仿真,经过对比分析表明,柔性机构优化中采用多材料组合局部改变材料属性比只用单材料更能达到较好的变形要求,同时可以通过寻求更广泛的材料组合使拓扑效果达到最优化。
Compliant mechanism applied to variable curvature adaptive wing will achieve the wing shape changing continuously with different flying conditions,which has good application prospects.In this paper,by considering the material properties of the compliant mechanism and based on genetic algorithm which introduces the load path ideas,the topology optimization for a leading edge from a single material component and multi-material combination was carried out,and the result is simulated in ANSYS.Through comparative analysis,it indicates that locally changing the material properties by using multi-material combination in the optimization of compliant mechanism can achieve much better deformation requirement than that of just single material.The effect of topology optimization can also be optimized by seeking for a much wider range of material combination.
出处
《机械设计》
CSCD
北大核心
2011年第6期61-66,共6页
Journal of Machine Design
基金
国家自然科学基金资助项目(50675175)
教育部博士点基金资助项目(20096102110017)
关键词
变弯度自适应机翼
柔性机构
载荷路径法
多材料组合
拓扑优化
variable camber adaptive wing
compliant mechanism
load path approach
multi-material combination
topology optimization
