Sobol′法轨道车辆吸能薄壁管灵敏度分析
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摘要
采用Sobol′指数法,将全局灵敏度分析方法应用于一种轨道车辆吸能薄壁管耐撞性分析当中.以总吸能量和接触力峰值作为目标响应,构建Kriging代理模型,分析薄壁管中各筋板、横档等输入参数对目标响应的影响程度,辨别出对吸能性能影响较大的参数,并将其安装在轨道车辆上与原结构进行对比.结果表明:Sobol′法与Kriging代理模型相结合能有效的分析碰撞试验中各输入参数的灵敏度,为优化设计提供有力参考,降低相应实验的设计周期和难度.
The Sobol` index method is used to apply the Global Sensitivity Analysis(GSA) to the crashworthiness analysis of a thin-walled tube applied to the rail vehicles. The total energyabsorption and the contact force peakare set as the target response to construct the Kriging surrogate model, and the impact of the input parameterssuch as stiffener board and transom of the thin-walled tubeon the response of the targetis analyzed. The parameters which have the important influence to the energy absorption performanceare identified and compare with the original structure. The results show that the combination of the Sobol` index method and the Kriging surrogate model can effectively analyze the sensitivity of the input parameters in the collision test, which provides a powerful reference for the structural optimizationand reduce the design cycle and difficulty of similar experiment.
The Sobol` index method is used to apply the Global Sensitivity Analysis(GSA) to the crashworthiness analysis of a thin-walled tube applied to the rail vehicles. The total energyabsorption and the contact force peakare set as the target response to construct the Kriging surrogate model, and the impact of the input parameterssuch as stiffener board and transom of the thin-walled tubeon the response of the targetis analyzed. The parameters which have the important influence to the energy absorption performanceare identified and compare with the original structure. The results show that the combination of the Sobol` index method and the Kriging surrogate model can effectively analyze the sensitivity of the input parameters in the collision test, which provides a powerful reference for the structural optimizationand reduce the design cycle and difficulty of similar experiment.
引文
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[3]孙宏图,王健,申国哲,等.铝合金薄壁多角管轴向冲击吸能特性研究[J].机械强度,2018(1):124-129.
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[5]刘小波,阎帅,陈秉智.基于材料与结构一体化的车辆吸能结构碰撞仿真[J].计算机辅助工程,2014(5):15-21.
[6]CHEN BINGZHI,QIN RUIXIAN,JIANG C.Optimization Analysis Of Energy-Absorbing Structures In Subway Train [J].International Journal of Robotics and Automation,2017,32(3),308-316.
[7]许述财,邹猛,魏灿刚,等.仿竹结构薄壁管的轴向耐撞性分析及优化[J].清华大学学报(自然科学版),2014(3):299-304.
[8]聂祚兴,于德介,李蓉,等.基于Sobol′法的车身噪声传递函数全局灵敏度分析[J].中国机械工程,2012(14):1753-1757.
[9]高月华.基于kriging代理模型的优化设计方法及其在注塑成型中的应用[D].大连:大连理工大学,2009.
[10]龚文.基于流股和单元的热力学物性建模和计算方法研究[D].杭州:浙江大学,2015.
[2]谭丽辉,谭洪武,崔晓梅,等.两种不同诱导槽结构抗撞性优化设计[J].长安大学学报(自然科学版),2016(1):120-126.
[3]孙宏图,王健,申国哲,等.铝合金薄壁多角管轴向冲击吸能特性研究[J].机械强度,2018(1):124-129.
[4]陈秉智,伞军民,孙彦彬,等.薄壁构件的抗碰撞吸能[J].大连交通大学学报,2008,29(5):99-104.
[5]刘小波,阎帅,陈秉智.基于材料与结构一体化的车辆吸能结构碰撞仿真[J].计算机辅助工程,2014(5):15-21.
[6]CHEN BINGZHI,QIN RUIXIAN,JIANG C.Optimization Analysis Of Energy-Absorbing Structures In Subway Train [J].International Journal of Robotics and Automation,2017,32(3),308-316.
[7]许述财,邹猛,魏灿刚,等.仿竹结构薄壁管的轴向耐撞性分析及优化[J].清华大学学报(自然科学版),2014(3):299-304.
[8]聂祚兴,于德介,李蓉,等.基于Sobol′法的车身噪声传递函数全局灵敏度分析[J].中国机械工程,2012(14):1753-1757.
[9]高月华.基于kriging代理模型的优化设计方法及其在注塑成型中的应用[D].大连:大连理工大学,2009.
[10]龚文.基于流股和单元的热力学物性建模和计算方法研究[D].杭州:浙江大学,2015.