Reliability-based optimization design of structure subjected to vehicle frontal impact based on probability-convex hybrid model

被引：0
|
作者：
Li F.-Y. [1 ,2 ]
Rong J.-H. [3 ]
Hu L. [3 ]
Li F.-L. [3 ]
Yi J.-J. [3 ]
机构：
[1] Key Laboratory for Safety Control of Bridge Engineering, Ministry of Education and Hunan Province, Changsha University of Science and Technology, Changsha
[2] Key Laboratory for Automotive Transportation Safety Enhancement Technology of the Ministry of Communication, PRC
[3] Hunan Province Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle, Changsha University of Science and Technology, Changsha
来源：
| 2016年 / Chinese Vibration Engineering Society卷 / 35期
关键词：
Convex model; Hybrid model; Optimization; Probability; Sequential optimization and reliability assessment;
D O I：
10.13465/j.cnki.jvs.2016.03.034
中图分类号：
学科分类号：
摘要：
In order to describe the different types of uncertainty parameters for the thickness and material parameters of absorbing energy structure, probability and convex set models were adopted. The reliability indices for vehicle frontal impact safety were chosen as the reliability constraints and the weight of absorbing energy structure was selected as the objective of optimization. Then, an optimization design of structures subjected to vehicle frontal impact was formulated. The Kriging models for obiective and constraint functions were constructed by using the method of Latin hypercube experiment design. A performance measure method was adopted to evaluate probabilistic constraints. The nested optimization was transformed into single-level optimization problem by using the sequential optimization and reliability assessment (SORA) based on shifting factors. Some practical examples show the efficiency and accuracy of the presented algorithm, which could supply some beneficial references to designers. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：215 / 220and230
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