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对聚氨酯弹性体的力学性能与本构关系进行了系统的研究,得出了适用于聚氨酯弹性体的本构模型。根据实际装备的接口和聚氨酯材料的特性,建立了聚氨酯隔振器的有限元模型,进行了隔振器的结构优化设计,得到了满足性能指标的隔振器结构参数。试验结果表明,本文所建立的数值模型能够比较准确地预测隔振器的各项性能参数。将本文的方法用于新型聚氨酯隔振器的研发,不仅能缩短聚氨酯隔振器的研制周期,而且可以降低设计成本。
The mechanical properties and the constitutive relation of polyurethane elastomer have been systematically studied, and the constitutive model suitable for polyurethane elastomer has been obtained. According to the actual equipment interface and the characteristics of polyurethane material, the finite element model of polyurethane vibration isolator was established, the structure optimization design of vibration isolator was carried out, and the structural parameters of vibration isolator which satisfied the performance index were obtained. The experimental results show that the numerical model established in this paper can predict the performance parameters of the vibration isolator more accurately. The method of this paper is applied to the research and development of new polyurethane vibration isolators, which can not only shorten the development cycle of polyurethane vibration isolators, but also reduce the design cost.