Determination of Load and Load Capacity Based On Desired Reliability

Design for reliability, a partial approach that allows determination of design parameters based on pre-defined level of reliability. That means defining reliability in a specific way which is suitable for this purpose. Reliability of design structure and elementary reliability of design components are used as a functional requirement of automotive gearbox (in relation with service life and service conditions) and also as a design constraint in analytic relations. In these circumstances, carrying capacity as a functional requirement is related to service conditions and service regime. This paper presents the results of load spectrum for representative operating conditions of the gearbox, which served as the basis for design parameters determination. The experimental results of the probability of destruction of the gearbox components, as well as processing of the probability of working conditions and as components of reliability for design, are some of the methods used in this paper. On the basis of the developed model the software for the structural optimization has been made.