关键词: 复杂多部件产品, 故障相关性, 不完全维修, 二维产品保证成本

Abstract: To evaluate the product's warranty cost of enterprises effectively and to analyze the influence factors on this basis for formulating the reasonable policy to reduce the warranty cost,a two-dimensional warranty cost for the complex multi-component product based on Monte Carlo simulation and cellular automata was proposed.The failure models for components based on accelerated failure time model were built,and the virtual age method was used to illustrate the influence of imperfect repair degree on failure of components.Compared with traditional “black box” methods,the proposed method simultaneously had a consideration of the product structure and the failure interaction among components so as to make the computing results more accurate.Moreover,compared with the existing researches on the two-dimensional warranty cost analysis of the multi-component product,the proposed method could be applied not only for the product with one of several basic structures but also for the product with a lot of components and complex structure.In addition,the influence of the imperfect repair on the product warranty cost was also considered and the application of the imperfect repair instead of the minimal repair and the complete repair could further reduce the product warranty cost for manufacturers.The proposed method was applied to an example to illustrate the influences of some factors on the warranty cost such as the imperfect repair,the failure interaction and so on.

Key words: complex multi-component product, failure interaction, imperfect repair, two-dimensional warranty cost