Robust design optimization of variable angle tow composite plates for maximum buckling load in the presence of uncertainties
Robust design optimization of variable angle tow composite plates for maximum buckling load in the presence of uncertainties
复制标题
可变角度丝束复合板的稳健设计优化，在存在不确定性的情况下实现最大屈曲载荷
DOI：
10.1016/j.compstruct.2019.110985
复制
发表时间：
2019-09
影响因子：
6.3
通讯作者：
Gosling P D
中科院分区：
文献类型：
--
作者：
Zhou Xiao Yi;Ruan Xin;Gosling P D
A robust design optimization algorithm is proposed for variable angle tow composite structures in the presence of uncertainties in the constituent material properties and applied loads. The proposed algorithm uses a stochastic perturbation method to propagate these uncertainties through to the simulated structural response, measured in terms of buckling load. The expected value plus a selected number of standard deviations of the response in the form of a bi-criteria problem. To describe the curvilinear fibres, two types of fibre path function, namely linear- and nonlinear-variation formulae, are adopted to illustrate the proposed methodology. A comparison between the resulting robust designs and deterministic designs is made, and changes to the final designs of fibre tow paths arising from the inclusion of uncertainty are discussed. It is shown that the robust designs out-perform the deterministic designs under real-world situations that include uncertainties.
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