提出一种面向汽车覆盖件的有限元仿真虚拟匹配方法.在有限元分析的虚拟环境下，该方法能够对汽车覆盖件、连接件和外综合样架模型进行快速装配分析，并给出汽车覆盖件的变形预测；对可调整零件进行敏感度分析以获取基准点调零的策略，提取样本点位置数据以判断汽车覆盖件的匹配质量；以汽车引擎盖装配验证作为方法应用实例，通过对比样本点的仿真数据与试验数据，获得两者变化趋势较为一致的结论，并通过计算获得最大偏差在0.6mm以内.研究结果表明，所提方法在验证汽车覆盖件是否满足车身装配要求方面具有可行性与有效性.
A virtual matching method based on finite element simulation in automotive panel is proposed. In the virtual environment of finite element analysis, the rapid assembly analysis on models of automotive panels, connectors and external sample rack is performed, and the deformation prediction of automotive panel is obtained. The sensitivity of the adjustable parts is analyzed to gain the adjustment strategy of reference point zeroing, and the sample point position data are extracted to judge the matching quality of automotive panel. An application example of automobile hood assembly is used to verify the proposed method. And the simulation data and test data of sample points are compared. It is concluded that the simulation data are nearly consistent with the test data. The maximum deviation is less than 0.6mm. The results show that the proposed method is feasible and effective to verify that the automobile panel meets the requirements of body assembly.
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