Double response surface method of reliability analysis for mechanism

A new method for analyzing the reliability of mechanism is proposed. The proposed method suggests the use of two response surface functions to evaluate the reliability probability. Structural reliability can be calculated through the analysis of the maximum stress and the maximum deformation of crank-rocker mechanism to establish its limit states equations respectively and then ganged sample these response surfaces that is double response surface, structural reliability can be calculated. Aiming at analyzing reliability of mechanical system with multiple components which have multiple failure modes, this method can realize the whole reliability analysis under the consideration of the correlation of these failure modes. The example result indicates that calculation velocity of this method is high; precision of this method is exact. It can be used in other researches and projects.