Research on hyperelasticity and viscoelasticity of high pressure waterstop material
TAN Xianwen,WANG Zhengzhong
1. Institute of Water Resources and Hydropower Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China2. Worcester Polytechnic Institute ,Worcester, Massachusetts , 01601,US
Hyperelasticity of rubber waterstop material in gates plays a decisive role in numerical analysis. The mechanical behaviour of a vulcanized rubber is studied in this paper by a uniaxial tensile test, biaxial tensile test and pure shear test. A set of nominal stress—strain curves for different strain rates is obtained. A systematic comparison and analysis in general rubber constitutive models is performed. In the case of complete experimental data or incomplete experimental data, corresponding optimal constitutive mode is given. By the finite element calculation of waterstop around bottom outlet, different stress-relaxation time is given by adopting different viscoelastic constitutive models. Compared with the real situation, burgers constitutive mode is recommended to use. The implications for design and production for waterstop in practice are substantial.
谭显文 王正中 余小孔. 高水头闸门止水材料超弹性与粘弹性本构研究[J]. , 2014, 33(19): 97-103.
TAN Xianwen;WANG Zhengzhong. Research on hyperelasticity and viscoelasticity of high pressure waterstop material. , 2014, 33(19): 97-103.