摘要
为了研究闸门P型水封在长期服役过程中的力学性能,采用黏弹性有限元法对水封服役过程中受力特性和变形特性演化进行了仿真分析。首先,基于橡胶材料的蠕变实验数据,利用最小二乘法原理分别确定了描述橡胶材料蠕变特性的不同黏弹性本构模型参数。其次,在ANSYS软件中基于不同本构模型对橡胶材料蠕变实验进行仿真,通过与实验结果对比表明:Burgers模型比标准线性固体模型能更准确地反映橡胶材料在黏弹性过程中的蠕变现象。最后,基于Burgers模型对不同材料的闸门P型水封长期服役过程进行黏弹性仿真,通过参数分析研究了水封材料黏弹性、库压、预压量等对水封长期工作过程中关于止水密封性的接触应力和接触宽度的影响。
In order to study the sealing performance of P-type water seal in long-term service,this paper establishes a P-type viscoelastic fi⁃nite element model of water seal.The evolution of mechanical and deformation characteristics of water seal during long-term service is simu⁃lated and analyzed.Firstly,based on the creep experimental data of typical rubber materials,the parameters of Burgers constitutive model and standard linear solid model to describe the creep properties of rubber materials are determined by using the least squares principle.Sec⁃ondly,the creep experiment of rubber material is simulated in ANSYS,and the feasibility of viscoelastic simulation of water-sealed rubber material is verified by comparing the simulation results with the test results.The comparison results show that the Burgers model can more ac⁃curately reflect the creep phenomenon of rubber materials in the viscoelastic process than the standard linear solid model.Finally,in order to evaluate the sealing performance of the long-term service process of P-type water seals, the influence of viscoelasticity, the paper studiesreservoir pressure and pre-pressure on contact stress and width of water seal by parameter analysis based on Burgers model.
作者
王珏
郑赟
汪振宁
周建方
胡葆文
WANG Jue;ZHENG Yun;WANG Zhen-ning;ZHOU Jian-fang;HU bao-wen(College of Mechanical&Electrical Engineering,Hohai University,Changzhou 213022,Jiangsu Province,China;College of Mechanical&Electrical Engineering,Suqian University,Suqian 223800,Jiangsu Province,China;Huadong Engineering Corporation,Hangzhou 311122,Zhejiang Province,China)
出处
《中国农村水利水电》
北大核心
2023年第12期266-272,共7页
China Rural Water and Hydropower
基金
常州市重点研发计划应用基础研究项目(CJ20210138)
常州市青年科技人才托举工程。
关键词
P型水封
橡胶本构模型
黏弹性
止水密封性
有限元仿真
P-type water seal
rubber constitutive
viscoelasticity
sealing performance
finite element simulation
