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Abstract：
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Tailored Rolled Blank (TRB) is a new type of sheet metal with continuously variable thickness. Compared with conventional uniform thickness sheet metal, the material distribution is more reasonable with satisfaction of crash safety, so it has better lightweight properties. At present, the research on TRB is mainly aimed at the rolling precision and forming characteristics, and the crashworthiness of TRB structures was less studied. Therefore, the quasi-static and dynamic crushing tests for TRB with top-hot structure were carried out. Then, the crash model of TRB with top-hat structure was established by the BT shell element, and the effectiveness of FE model was verified by the test data. Finally, based on the non-dominated sorting genetic algorithm (NSGA-II) and meta-modeling technique, the optimization design of TRB with top-hat structure under the quasi-static/dynamic loading case and multiple loading cases was conducted. The results show that the optimization design under multiple loading cases not only improves the crashworthiness of structure, but also provides a series of compromise solutions for the practical problems under multiple loading cases.
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Funds：
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国家自然科学基金资助项目(51575172)
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AuthorIntro：
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作者简介：张自强(1992- )，男，硕士
E-mail：zhangziqiang314@163.com
通讯作者：刘翔(1992- )，男，硕士
E-mail:liuxiang_hnu@126.com
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Reference：
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