聚氨酯三阶Mooney-Rivlin模型参数拟合研究

Parameter Fitting Study of Polyurethane Third-order Mooney-Rivlin Model

聚氨酯材料具有优异的变形性能,可以用于密封。为了实现管道智能封堵器的密封功能,必须通过合适的力学模型及参数进行表征,并选取合适的聚氨酯作为密封圈材料。基于聚氨酯单轴压缩试验数据,对三阶Mooney-Rivlin模型进行拟合,获取c_(10)、c_(01)、c_(11)三个参数,并结合有限元仿真验证正确性与合理性。通过聚氨酯三阶Mooney-Rivlin模型参数拟合研究,提升了管道智能封堵器密封功能的可靠性。

Polyurethane material has excellent deformation property and can be used for sealing.In order to realize the sealing function of the intelligent pipeline plunger,it must be characterized by suitable mechanical model and parameters,and suitable polyurethane must be selected as the sealing ring material.Based on the polyurethane uniaxial compression test data,the third-order Mooney-Rivlin model was fitted,and the three parameters of c_(10),C_(01) and c_(11) were obtained,and the correctness and rationality were verified by combining finite element simulation.Through the parameter fitting study of polyurethane third-order Mooney-Rivlin model,the reliability of the sealing function of the intelligent pipeline plugger was improved.