Reliability Estimation of Optimal Viscoelastic Composite Shells in Critical-Time Calculations

被引:0
作者
G. Teters
机构
[1] University of Latvia,Institute of Polymer Mechanics
来源
Mechanics of Composite Materials | 2003年 / 39卷
关键词
reliability; composite shells; viscoelasticity; critical time;
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学科分类号
摘要
The problem of reliability estimation for optimal viscoelastic composite shells in critical-time calculations is considered. The weight minimization of a viscoelastic composite shell, with constraints on deflections at the critical time, leads to a system deforming unstably, whose deflections grow in time with an increasing rate. A method for estimating the reliability of such shells in calculating the critical time is discussed. This time is regarded as a random variable depending on many, roughly equivalent, factors. An analysis of the reliability is carried out for different values of coefficients of variation, occurring in practice.
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页码:553 / 558
页数:5
相关论文
共 4 条
[1]  
Teters G. A.(2001)Creep stability of thin-walled composite structures Mech. Compos. Mater 37 519-524
[2]  
Teters G. A.(2002)Multiobjective optimization of a composite cylindrical shell with an elastic core with account of reliability Mech. Compos. Mater 38 499-504
[3]  
Rikards R. B.(1975)Optimization of a composite cylindrical shell with a viscoelastic core under axial compression Mekh. Polim. 3 442-446
[4]  
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