Structural Optimization of Special Flat Scroll Spring Based on HyperMesh and ANSYS

For a special flat scroll spring for automobile seat cushion angle adjuster, the maximum stress in the working process exceeds the allowable stress and the contact between coils leads to the reduction of the fatigue life of the flat scroll spring. Taken the maximum stress of the flat scroll spring to meet the strength requirements and the non-contact between coils as the optimization objective, based on HyperMesh and ANSYS co-simulation finite element analysis, the structural parameters and material selection are optimized, and the optimization scheme is proposed, and the stress and contact of the flat scroll spring before and after optimization are analyzed. The results show that the maximum stress of the optimized flat scroll spring is lower than the allowable stress of the material, which meets the strength requirements, and there is no contact between the coils in the working process. The optimization scheme in this paper can provide a reference for the structural optimization of this special type of spring.