摘要
提出了在概率和非概率两类不确定性量同时存在条件下的最轻结构设计方法 ,描述了两种可行鲁棒性实现策略 ,讨论了其优缺点 .所提方法应用于一个桁架结构的最轻设计 ,视材料弹性模量、杆元截面积为概率型变量 ,载荷为非概率型变量 .计算结果表明 ,随着不确定性量波动变化程度的增加 ,结构质量亦增加 。
This paper proposed the methodology for the design for minimum weight of structures with probabilistic uncertainty and non-probabilistic uncertainty simultaneously. Two strategies for feasibility robustness were described and their advantages and disadvantages were concisely discussed. The proposed methods were applied to the design for the minimum weight of a ten-bar truss structure, and in the numerical example, the elasticity of modulus and the bar cross-sectional areas were treated as probabilistic design parameter and design variables respectively while the loads applied to the structure were taken as non-probabilistic variables. Numerical results showed that the total mass of the structure increased as the variation of uncertain variables increased. Increased masses were required to protect the structure from variability of uncertain variables.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第3期43-45,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词
最轻结构
概率不确定性
非概率不确定性
可行鲁棒性
minimum weight structure
probabilistic uncertainty
non-probabilistic uncertainty
feasible robustness
