Abstract: The load-displacement and stress-displacement characteristics of disc spring are analysed by using ANSYS Workbench and elastoplastic material models, and compared with the theoretical results of the A-L method. On this basis, the effects of different slot fillets and slot widths on load-displacement and stress-displacement characteristics are studied. The analysis results show that in the plastic deformation stage, the finite element analysis results are quite different from the theoretical values of the A-L method. Compared with the A-L method, the finite element method is more consistent with the measured values. Increasing the slot fillet increases the load, and increasing the slot width decreases the load. Different slot fillets and slot widths will have a certain influence on the principal stresses at the four corner points of the disc spring section. This provides a theoretical basis for the design of disc springs.

Key words: Disc spring; Finite element analysis; Load-displacement characteristic; Stress-displacement characteristic

摘要： 利用 ANSYS Workbench 和弹塑性材料模型对碟形弹簧的载荷-位移特性和应力-位移特 性进行了有限元分析，并与 A-L 法的理论解进行了对比。在此基础上，研究了不同的齿槽圆 角和齿槽宽度对载荷-位移和应力-位移特性的影响。分析结果表明，在塑性变形阶段，有限元 分析结果与 A-L 法的理论值差异较大。相对于 A-L 法，有限元法与实测值更加吻合。增大齿 槽圆角会使载荷增加，增大齿槽宽度会使载荷减小。不同的齿槽圆角和齿槽宽度都会对碟簧 截面四个角点的主应力有一定的影响，这为碟形弹簧的设计提供了理论依据。

关键词: 碟形弹簧；有限元分析；载荷-位移特性；应力-位移特性