考虑装配误差的车门关闭力计算

针对由装配误差引起的车门关闭力预测不准确问题，提出了一种计算精确车门关闭力的方法。该方法首先建立车门关闭过程中各部件相应的力学模型，在影响关闭力大小的几个因素中以门锁为例，通过蒙特卡罗模拟得到车门装配过程中门锁位置误差的概率分布统计，然后在计算关闭力的数学模型中结合门锁位置装配误差，得到车门关闭力的概率分布结果，最后对样车进行关闭力测试，试验结果表明考虑装配误差的车门关闭力的计算精度明显提高。

Door Closing Force Calculation Considering Door Assembly Deviations

For the inaccurate analyses of automotive door closing force simulation caused by assembling deviations,a approach to accurately calculate the door closing force was proposed.Firstly, by establishing appropriately mechanics model of the components in the process of closing the door, the door lock that impacted the closing force out of several other factors was taken for example, and the probability statistics distribution of door lock's positional errors in the process of assembling was gained by Monte Carlo simulation.Combined with the door lock's positional assembling errors in the calculation of the closing force of the mathematical model, the probability distributionof the door closing force was obtained. Then the closing force tests on the prototype were done.The test results show that the calculation accuracy of the door closing force that combined with the door assembling deviations is improved.