中文摘要：

本文提出一种基于多因素耦合的机构可靠性仿真试验方法，该方法将机构可靠性影响因素分为原始因素、累积性使用因素和非累积性使用因素，将机构状态分为原始状态和工作状态。仿真试验过程中，首先以原始因素为随机变量进行抽样，并将其代人性能函数以建立仿真试验的样本。然后针对某个样本，依次在各个时刻以使用因素为随机变量进行抽样，将抽样结果依次代入该样本并判断其是否失效，以得出该样本的寿命。依次得出每个样本的寿命并据此对机构进行可靠性演化分析。最后以舱门锁为案例对本方法进行了验证，结果表明本文所提方法能较为真实的模拟机构在其服役讨程中的可靠件涫化规律． 本文所提方法同时适用于同类复杂机构。

英文摘要：

A simulative trial method based on multi-factor coupling is proposed in this paper. In this method, these factors are classified as original factors, cumulative service factors and non-cumulative service factors. The states of mechanism are classified as original state and working state. The performance function of mechanism is firstly constructed. In the simulative process, original factors taken as random variables are sampled, and then be substituted into the performance function to get the trial samples. With respect to one of the trial samples, at each moment of the trial sample＇ s life cycle, non-cumulative service factors taken as random variables are sampled, and based on which the cumulative service factors can be computed. Then the sample point of service factors is substituted into the trial sample and we can compute the performance function ＇ s value. If the value is non - negative, go on the simulation process. If the trial sample can be regard as failed, record its life and go on the simulation of next trial sample. As mentioned above, we can get the life of every, trial sample. The reliability and the reliability evolution process of the mechanism can be assessed based on the simulation work above. At last, the gear door lock of an airplane is taken as example to illustrate the effect of the proposed method. The method is suitable for other mechanical product of the similar kinds.