摘要
运用碰撞仿真技术,对能够代表汽车前纵梁的6种薄壁直梁进行了截面形状选择;针对所选取的较优截面形状直梁的截面尺寸、板厚和材料强度进行了正交试验设计,以吸能、比吸能和压溃距离为主要评价指标建立了响应面模型并进行优化。结果表明,优化后的直梁在质量仅增加3.2%的情况下,不仅抗撞性明显提高,而且设计空间下降了约27.1%。
Better cross section shapes are chosen for 6 kinds of thin-wall straight beams which stand for front longitudinal beam by collision simulation technology.Then,the orthogonal tests are performed on the size of the straight beam,plate thickness and material strength from the selected cross section shape.Finally,the response surface model is established and optimized with energy absorption,specific energy absorption and crushing distance as the main evaluation index.In the case of mass increase by only 3.2 percent,the optimized straight beam shows an obvious improvement of crashworthiness and a decrease of 27.1% for design space.
出处
《汽车技术》
北大核心
2013年第7期34-38,共5页
Automobile Technology
基金
国家重大基础研究发展计划(973计划)(2010CB832700)
中央高校基本科研业务费专项资金(DUT11ZD202)
高等学校博士学科点专项科研基金(20100041120017)
关键词
薄壁直梁
抗撞性
设计空间
响应面法
Thin-walled straight beam
Crashworthiness
Design space
Response surface method
