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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >USE OF STOCHASTIC ANALYSIS FOR FMVSS210 SIMULATION READINESS FOR CORRELATION TO HARDWARE TESTING
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USE OF STOCHASTIC ANALYSIS FOR FMVSS210 SIMULATION READINESS FOR CORRELATION TO HARDWARE TESTING

机译：FMVSS210模拟准备的随机分析与硬件测试的相关性

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The FMVSS210 regulation establishes requirements for seat belt assembly anchorages to be strong enough for effective occupant restraint. The belt separation from the vehicle structure in crash tests needs to be avoided. Federal government mandate requires use of Pelvic and Torso Body Blocks for testing belt anchor strengths for lap and shoulder belts respectively. The belt anchorages are expected to withstand loads of 13.34 kN if both lap and shoulder belts are used and 22.24 kN if only lap belts are used. The analytical simulation of the hardware test is done using explicit dynamic code LS-DYNA. Hardware testing is of quasi-static nature while the simulation uses the dynamic code. However the analysis could be made to approach the quasi-static test by adjusting some input parameters in the simulation. In addition some input parameters need adjustment for making the model robust and to make it correlate to the hardware test. This study involves the use of Optimal Symmetric Latin Hypercube Design to explore the design space, and to develop a fast surface response model. This response model can be viewed as a surrogate model to the actual LS-DYNA simulation and is used in this work to rank the input parameters by the percent contribution they make towards the variation of the desired output responses. After determining the fit of the response model, it is used to perform the stochastic simulation. The confidence interval for test correlation prediction can then be estimated. This technique can further be used to do design sensitivity studies and for optimizing the vehicle structure with respect to FMVSS210 regulation.
机译：FMVSS210法规建立了安全带组件固定装置的要求，该固定装置应足够坚固以有效约束乘员。需要避免在碰撞测试中皮带与车辆结构分离。联邦政府的命令要求使用骨盆和躯干车身模块分别测试腰部和肩带的皮带锚定强度。如果同时使用腰部安全带和肩部安全带，则安全带锚定件应承受13.34 kN的载荷，如果仅使用安全腰带，则其承受的载荷应为22.24 kN。硬件测试的分析模拟是使用显式动态代码LS-DYNA进行的。硬件测试具有准静态性质，而仿真则使用动态代码。但是，可以通过在仿真中调整一些输入参数来进行分析以逼近准静态测试。另外，一些输入参数需要调整以使模型健壮并使其与硬件测试相关。这项研究涉及使用最佳对称拉丁超立方体设计来探索设计空间，并开发出快速的表面响应模型。该响应模型可以看作是实际LS-DYNA仿真的替代模型，并在这项工作中用于按输入参数对所需输出响应的变化的百分比贡献对输入参数进行排名。确定响应模型的拟合后，将其用于执行随机模拟。然后可以估计用于测试相关性预测的置信区间。相对于FMVSS210调节，该技术还可用于设计灵敏度研究和优化车辆结构。

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