1. College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China；
2. China FAW Co., Ltd. R&D Center, Changchun 130011,China；
3. State Key Lab of Rolling and Automation, Northeastern University, Shenyang 110004,China
To study the design of a vehicle crash box based on the tailor rolled blank (TRB) technology, a modeling method was proposed to meet the graded thickness properties and graded mechanical properties of TRB. A mathematical model for the multiobjective optimization problem was deduced by considering the distribution of thickness, weight and energy absorption of the crash box. The optimal parameters of the TRB crash box were obtained by the multiobjective optimization method，and the samples were successfully trialmanufactured. Sufficient and symmetric folds appear during the quasistatic collapse of the samples. The order of folds is coincident with the distribution of thickness, and the deformation process is stable. Compared with the original crash box with uniform thickness, the energy absorption of the TRB crash box increases while the weight decreases by about 7%.
徐涛1，刘念1，高伟钊2，徐天爽1，胡贤磊3. 轧制渐变厚度的汽车吸能盒结构参数优化[J]. 振动与冲击, 2018, 37(10): 269-274.
XU Tao1，LIU Nian1，GAO Weizhao2，XU Tianshuang1，HU Xianlei3. Parameters optimization of a vehicle crash box based on the tailor rolled blank technology. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(10): 269-274.
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