摘要
封隔器超弹性胶筒所用的天然硫化橡胶添加了填充物,单纯利用理论研究无法选择合适的应变能函数模型。通过对填料填充橡胶材料进行单轴拉伸试验,拟合得到Mooney-Rivlin模型和Yeoh模型材料参数,并结合实验数据确定填料填充橡胶材料的应变能函数模型;采用ANSYS软件分析2种不同弹性模量的橡胶封隔器的坐封效果。结果表明,对于填料填充天然硫化橡胶材料,Yeoh模型拟合效果更好;在相同载荷作用下,弹性模量小的填料填充橡胶材料变形量更大,胶筒最大Von Mises应力较小且最大接触应力较大,更适合用作封隔器的中胶筒。
The strain energy function can not be chosen appropriately only by theory for the hyper-elastic packer rubber with filler. The uniaxial tensile test was carried out for the rubber with filler, the material parameters of Mooney-Rivlin and Yeoh model were obtained through curve fitting, and the strain energy function of the rubber with filler was obtained com- bining the experimental data. The packer＇s setting effect of the rubber with different elasticity modulus was analyzed by AN- SYS software. The results show that for the vulcanized natural rubber with filler, the Yeoh model＇s calculation accuracy is higher than the Mooney-Rivlin model. Under the same load, the rubber with small elasticity modulus has bigger deforma- tion, smaller maximum Von Mises stress and larger maximum contact pressure, which is more suitable as the middle rub- ber of the packer
出处
《润滑与密封》
CAS
CSCD
北大核心
2013年第10期25-29,共5页
Lubrication Engineering
基金
中石化科技攻关项目(P12119)
关键词
橡胶材料
应变能函数
封隔器
拉伸试验
rubber material
strain-energy function
packer
tensile test
