A Number Of Applications Of Hybrid Reliability Technology In The Vehicle Design

Consideration in the vehicles design process not only include the bend stiffness,torsion stiffness and mode performance of the white body, but also need to take thesecurity problems on the key components, frontal collision and side collision intoaccount. Uncertainty parameter in the design process usually make the car’s actualperformance fluctuates around the target area, sometime even cause the safetyperformance of vehicle can’t satisfy the regulations. Therefore, it is necessary andsignificant to investigate on the reliability of vehicle’s safety. In this paper, problemsin the design process are analyzed using the reliability method based onprobability-convex hybrid model. Effects of uncertainty thickness of key componentsand material parameter are assessed, which provide a reference for the vehicle safetyreliability design. The main contents of this paper are as follows:(1) Reliability analysis based on probability-convex set of mixed model isapplied to the vibration characteristics analysis of a certain type of electric vehiclebattery pack. The effects of uncertainty of part thickness, material density and elasticmodulus for the influence of vibration characteristics are assessed.(2) Reliability analysis based on probability-convex set of mixed model isapplied to the frontal crash safety analysis of a certain type of vehicle. Assessment ofthe uncertainty of the part thickness, material density and elastic modulus of theanticollision beam, front longitudinal beam, front longitudinal beam cover andstrengthen for the influence of frontal crash safety.(3) Reliability analysis based on probability-convex set of mixed model isapplied to the side impact safety analysis of a certain type of vehicle. Assessment ofthe uncertainty of the part thickness, yield limit of the board of B-pillar, strengthenplate of the B-pillar, front longitudinal beam, bumper and door beams for the influenceof side impact safety.