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为了测试和评定微构件的力学特性,建立了凸台弹性膜结构的力学模型。将凸台弹性膜结构化简为中心带有凸台的无限长薄板条结构,利用板壳理论得出了凸台的弹性模量、厚度和横截面积对弹性膜表面应力分布影响的解析计算公式,并通过有限元分析对计算结果进行仿真验证。理论分析和仿真结果吻合。凸台弹性膜复合结构的等效弯曲刚度与凸台的弹性模量和厚度有关,当凸台的弹性模量和厚度增加时,凸台弹性膜复合结构的等效弯曲刚度增大,可以通过增加凸台的弹性模量和厚度来提高凸台弹性膜结构的强度。该研究为凸台弹性膜结构的优化设计和应用提供了计算方法和设计依据。
In order to test and evaluate the mechanical properties of the micro-component, a mechanical model of the elastic membrane structure of the boss was established. Based on the theory of plate shell, the elastic modulus, thickness and cross-sectional area of the bosses are analyzed analytically for the influence of the stress distribution on the surface of the elastic membrane Formula, and through the finite element analysis to verify the calculation results. The theoretical analysis is consistent with the simulation results. The equivalent bending stiffness of the bossed elastic membrane composite structure is related to the elastic modulus and the thickness of the bosses. When the elastic modulus and the thickness of the bosses are increased, the equivalent bending stiffness of the bossed elastic membrane composite structure increases, Increasing the elastic modulus and thickness of the boss to improve the strength of the elastic membrane structure of the boss. The research provides the calculation method and design basis for the optimization design and application of bossed elastic membrane structure.