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采用边界元法理论，针对机械结构，建立起用于可靠性计算的随机模型和随机边界积分方程。探讨了该类机械构件可靠性的一般过程，编制了BECS实用计算软件包，并对工程中几种典型机械构件给出了计算实例和结果讨论。
Using the theory of boundary element method, aiming at the mechanical structure, a stochastic model and a stochastic boundary integral equation for reliability calculation are established. The general process of the reliability of such mechanical components is discussed. The practical calculation software package of BECS is compiled. The calculation examples and the discussion of the results are given for several typical mechanical components in the project.