Research on reliability safety factor design method and its application

Abstract

Based on the stress-strength interference model, the safety factor of traditional mechanical design method is introduced into reliability design theory and the new concept of reliability safety factor is extracted. Then a new design method based on the reliability safety factor is established. The reliability safety factor design method can effectively avoid the blindness and conservatism of traditional design method, and can also reduce the complexity of general reliability design method. When stress and strength are subordinated to various distributions, the reliability safety factors and reliability values are calculated and relevant design formulas are presented. The actual application to mechanical design proved that the new reliability design method is feasible and useful to improve the design level and reduce the cost.