Parametric Sensitivity Analysis in Reliability of Coil Tube-springs

On the condition of known probabiliatic characteristics of basic random variables,based on the theory of the most probable point perturbation method for reliability design with normal distribution parameters and the theory of sensitivity analysis,reliability sensitivity analysis for coil tube-springs was studied and its numerical method was presented.The respective program can be used to obtain the information of reliability sensitivity analysis,and the effects of design parameters on the reliability of coil tube-springs were studied.The method presented in this paper provides theoretical basis for the reliability design of coil tube-springs.