摘要
为了减轻深海高压密封舱的重量,提出基于模糊可靠度的优化设计方法。该方法采用最小强度和最大工作应力模糊可靠度计算理论,以密封舱的可靠度为1和最小壁厚为优化设计目标,通过有限元计算求取密封舱工作时最大应力隶属函数曲线的分布参数,根据材料的变异特性求取密封舱最小强度隶属函数曲线的分布参数。理论计算和实验结果表明,采用该方法可以有效减轻密封舱的重量。
Optimization design method based on fuzzy fiduciary level is proposed to reduce deepsea high pressure airtight cabin weight. Theory of fuzzy reliability based on minimum strength and maximum working stress is used in this method. The optimization goal is fiduciary level equal to 1 and minimizes the cabin thickness. Distributed parameter of airtight cabin maximum working stress is obtained with FEA（finite element analysis） technique and minimum strength is obtained with material variation. Experiment results show that cabin weight can be reduced effectively with this method.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2007年第4期691-694,共4页
Journal of Mechanical Strength
基金
国务院大洋专项(DY105-03-01-10)
中南大学研究生创新工程(1343-75221)资助。~~
关键词
模糊可靠度
优化设计
高压密封舱
深海
Fuzzy fiduciary level
Optimization design
Airtight cabin
Deepsea
