聚氨酯隔振器的仿真与试验研究

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 characteristic and constitutive model of polyurethane elastomer were systematically investigated, and the optimum constitutive model was obtained. Based on the interface of the practical equipments and the characteristic of the polyurethane material,a finite element model of polyurethane vibration isolator was constructed, the structure of the polyurethane vibration isolator was designed,and the optimum structure parameters were derived. The experimental results show that the nominal model can forecast the performance indexes of the polyurethane vibration isolator. The presented method for developing new type of polyurethane vibration isolator can not only shorten the developing period of the isolator, but also reduce the design cost.