Transactions of Materials and Heat Treatment

Title：Optimization design of material matching for auto-body safety components

Authors： Wu Suzhen Zheng Gang Li Guangyao Tian Xuanyi Liu Sheng

Unit： Hunan University

KeyWords： material matching high strength steel automotive safety multi-objective optimization

ClassificationCode：TP142

year,vol(issue):pagenumber：2015,40(11):85-93

Abstract：

For the blindness in selecting vehicle parts and the lack of considering interaction problem between thickness and material, targeted at the greatest affected parts in optimization design,reasonable selection of vehicle parts combining with the load path analysis, energy distribution analysis and sensitivity analysis was realized. Meanwhile, a more accuracy approximate model was selected from comparing different approximate models, and the optimization design was carried out by multi-objective optimization method. The optimal schemes about material and thickness were given by selecting mass and peak acceleration as objectives, the maximum material flow value of the front panel as constraint, and thickness and material as design variables. The results show that the method is of high accuracy and efficiency. It not only improves the crashworthiness of the car, but also realizes the lightweight body structure.

Funds：

国家自然科学基金资助项目(11102067）

伍素珍（1978-），女，博士研究生，讲师郑刚（1977-），男，博士,副教授

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