摘要
基于橡胶试样单轴拉伸试验得到的拉力和变形量等试验数据,利用最小二乘法拟合求得橡胶材料的Mooney-Rivlin模型及Yeoh模型常数。基于有限元方法,用得到的模型常数对试样变形量进行计算并与试验结果对比。结果表明,Mooney-Rivlin模型在小应变和中等应变时可以较好地描述材料的力学行为,Yeoh模型适合模拟大应变时材料的力学行为。利用得到的模型常数计算分析异形密封圈的静态性能,最大变形量计算值与试验值的相对误差为2.74%,表明了所选模型常数的准确性。
In this study,the Mooney-Rivlin model and Yeoh model of rubber materials were established using the material parameters obtained by least square fitting based on the test data such as tensile stress and deformation acquired from uniaxial tensile test of rubber samples.Then,the deformation of rubber samples was calculated using the models and finite element analysis method,and the simulated results were compared with the experimental results.The results showed that Mooney-Rivlin model could well describe the mechanical behavior of rubber materials under small and medium strains.In addition,the Yeoh model was suitable for the simulation under large strains.Consequently,the static performance of the special-shaped sealing ring was calculated and analyzed by using the obtained models.The relative deviation between the calculated maximum deformation and the experimental test value was 2.74%,indicating that the accuracy of the established models was good.
作者
闫昱全
宋国臣
YAN Yuquan;SONG Guochen(The 713 Research Institute of CSSC,Zhengzhou 450015,China)
出处
《橡胶科技》
CAS
2023年第7期325-329,共5页
Rubber Science and Technology
