摘要
为避免传统的确定螺纹剪切式汽车碰撞吸能装置(以下简称CST)最优结构参数方法计算量大的问题,笔者提出一种CST显式优化设计模型予以改进。该模型基于响应面法的基本思想,利用UG、VPG和LS-DYNA软件,针对60 mm CST的4个主要因素进行单因素仿真实验分析,通过MATLAB对所得数据进行拟合得到各单因素和对应最大减加速度的函数关系,运用响应面法结合所得数据获取4个因素与最大减加速度总的函数关系,即CST显式优化设计模型,通过该显式优化设计模型,可方便地求得在特定最大加速度下4个主要因素的最优参数。仿真实验结果表明:利用该显式优化设计模型求得的最优参数,能够满足特定最大加速度的要求,从而验证了显式优化设计模型的正确性。
To avoid the huge amount of calculation in the tranditonal methods for optimal structural parameters in the cutting of the screw thread teeth（CST）,we propose an explicit optimization of the designed model of the CST.We focused on the four main components of the CST and performed analysis of simulation experiment for each single factor by using UG、VPG and LSDYNA based on the basic idea of the response surface method.Then the functional relationship between the various factors and corresponding maximum deceleration can be obtained by using MATLAB to fit the experimental data,and the total functional relationship between the four main components and the maximum deceleration can be obtained by using weighting method in conjunction with the obtained explicit optimization of the designed model of the CST.Through this total functional relationship,the optimal structure parameter values of the main components at a certain maximum velocity can be obtained,and the correctness of the total functional relationship can be verified by the analyses of simulation experiment.
出处
《机械科学与技术》
CSCD
北大核心
2011年第4期560-565,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
长沙理工大学道路灾变防治及交通安全教育部工程研究中心开放基金资助项目(kfj090304)
国家科技行动计划项目(2009BAG13A02)
国家西部项目
京珠复线长沙至湘潭高速公路资源节约型和环境友好型科技示范工程项目(CXKJSF0107及CXKJSF0108-4)
长沙市重点项目(K0802090-11)资助
