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- Title
Nonlinear Simulation of High Head Expansion Water Seal Based on the Mooney-Rivlin Model.
- Authors
HU Jian-ke; CHEN Ji-feng; WANG Zhen-ning; HU Bao-wen; WANG Jue; HAO Nan-nan; CAI Kun; HU Meng-xi
- Abstract
A nonlinear finite element model of high head expansion water seal is established to simulate the mechanical performance and deformation characteristics of the rubber material during the water sealing process. The influence of back pressure, reservoir water pressure and other parameters on sealing performance of the expansion water seal are further investigated. Firstly, the uniaxial tension compression and pure shear test date of rubber material are used to curve fitting and the Mooney-Rivlin model parameters based on the least square method. The APDL programming language in ANSYS is used to determine the contact state of steel head and apply the cyclic loads from lateral water pressure. Secondly, the influence of the Mooney-Rivlin model with different number of parameters on the accuracy of the simulation is analyzed by numerical examples. The validity of the simulation is verified by comparing with the model experiment. Finally, the parametric studies are presented to explore variations of free expansion, contact stress and steel head offset with back pressure, reservoir water pressure and the distance between panel and pressing plate in different working stages.
- Subjects
WATER pressure; CYCLIC loads; RUBBER; LATERAL loads; STRESS-strain curves; FINITE element method; LEAST squares; CRUMB rubber
- Publication
China Rural Water & Hydropower, 2022, Issue 4, p215
- ISSN
1007-2284
- Publication type
Article