大连理工大学学报Issue(4)：391-396,6.DOI:10.7511/dllgxb201404003
液压蓄能器隔膜在动荷载下应力响应研究
Study of stress response of hydraulic accumulator's diaphragm under dynamic load
摘要
Abstract
The finite element (FE ) method is applied to build the FE model of hydraulic accumulator's rubber diaphragm under dynamic load.Taking the surface closed by the accumulator's diaphragm and the steel cover as the control surface,the control volume of the nitrogen chamber can be got by integrating on the control surface.Inside the control volume,the nitrogen pressure can be obtained according to the thermodynamics equation of ideal gas. Assuming that the rubber is incompressible and isotropic material,Ogden's hyperelastic constitutive model is applied to the rubber material.The material parameters are determined by fitting the uniaxial tension test data.The deformation and stress response of the accumulator's rubber diaphragm under dynamic load caused by the nitrogen and oil pressure are given.The rubber diaphragm's rupture reasons are analyzed based on the experimental results.The new modified models with different shapes and section sizes are built, and the optimal rubber diaphragm model which satisfies the strength of material is determined by validation.关键词
超弹材料/动荷载/数值计算/隔膜蓄能器/冲击破坏Key words
hyperelastic material/dynamic load/numerical calculation/diaphragm accumulator/impacting rupture分类
通用工业技术引用本文复制引用
王喜军,宗智,赵勇,邹丽..液压蓄能器隔膜在动荷载下应力响应研究[J].大连理工大学学报,2014,(4):391-396,6.基金项目
“九七三”国家重点基础研究发展计划资助项目(2013CB036101,2010CB832704) （2013CB036101,2010CB832704）
国家自然科学基金委员会创新研究群体科学基金资助项目(51221961) （51221961）
国家自然科学基金资助项目(51309040) （51309040）
