曲柄滑块防护装置的参数优化
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摘要
以满足后下部防护装置的法规要求为目标,对设计出的一种曲柄滑块式CST货车后下部防护装置的吸能螺纹进行了优化设计。首先通过VPG进行了有限元模型的建立,并结合正交优化方法对吸能螺纹的参数进行了优化设计,最后在LS-DYNA中以高于法规要求碰撞速度的50 km/h对装置进行了碰撞过程的数值仿真计算,最后得到了一组优化后的吸能螺纹参数,算例表明,装置的各项指标都满足法规要求,达到了优化目的。
In order to make the crank slider protective devices to meet the requirements of regulation,optimization is carried out to the absorbing thread of the crank-slider-CST protective device. Based on the finite element model in VPG and simulation in LS-DYNA,with the orthogonal optimization design,the parameters of the absorbing thread are obtained. The crash speed in these simulations is 50km /h,which is higher than the regulatory speed. The simulation shows that all indexes could meet the regulation very well,and the effectiveness of the device is demonstrated.
In order to make the crank slider protective devices to meet the requirements of regulation,optimization is carried out to the absorbing thread of the crank-slider-CST protective device. Based on the finite element model in VPG and simulation in LS-DYNA,with the orthogonal optimization design,the parameters of the absorbing thread are obtained. The crash speed in these simulations is 50km /h,which is higher than the regulatory speed. The simulation shows that all indexes could meet the regulation very well,and the effectiveness of the device is demonstrated.
引文
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[2]潘婷,王宏雁.在我国推进载货汽车后下部防护装置法规的必要性[C].2008中国汽车安全技术国际研讨会,上海,2008(6):407-411.
[3]雷正保.螺纹剪切式汽车碰撞吸能装置[Z].ZL03124568.4,2005.
[4]雷正保,王素娟.汽车碰撞的安全与吸能[M].长沙:国防科技大学出版社,2008.
[5]Livermore Software Technology Corporation.LS-DYNA keyword user’s manual[M].California:Livermore Software Technology Corporation,2010.
[6]Zhengbao Lei,Shubin Wei,Qingyun Du.Explicit Optimization Method for Cutting-screw-thread on the Basis of dual-RSM[J].Frontiers of Mechanical Engineering in China,2010,5(4):423-430.
[7]付江华,雷正保,罗宪华.基于正交试验的螺纹剪切系统参数优化设计[J].交通科学与工程,2010,26(3):77-81.
[8]徐见秋,雷正保,罗宪华.螺纹剪切式碰撞吸能装置最优螺纹参数设计[J].交通科学与工程,2010,26(1):90-96.
[9]魏书彬,雷正保,杜青云.汽车碰撞时吸能螺纹剪切分析的网格优化[J].机械强度,2010,32(5):859-864.
[10]方开泰,马长兴.正交与均匀试验设计[M].北京:科学出版社,2001.
[11]雷正保,侯石静.定敦长间断式直道混凝土护栏的结构参数[J].交通运输工程学报,2008,8(4):110-115.