A method for analyzing structural strength sensitivity of an automobile generator assembly

Abstract

This invention specifically relates to a method for analyzing the structural strength sensitivity of automotive generator assemblies. The method first constructs a finite element model of the generator assembly and calculates its unit radial and torsional stiffness coefficients; then, it constructs an acoustic simulation model and obtains a dataset of the full-frequency sound transfer function of the structural surface through full-band frequency sweep simulation; next, it calculates the single-frequency noise sensitivity coefficient and combines it with the stiffness coefficient to obtain the overall noise sensitivity coefficient; finally, it completes the sensitivity analysis and performance level assessment of the structural strength's impact on noise through preset rating rules. This invention eliminates the need for complex multi-physics coupling simulations and physical prototypes, enabling fully digital analysis and risk prediction to be completed early in the design process, significantly shortening the product development cycle and providing standardized support for low-noise forward design of generators.

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