水密装备的密封橡胶结构优化设计研究  

Optimization Design of Sealing Rubber Structure for Watertight Equipment

作　　者：王忠强 阚净 支山亚 苗德青 WANG Zhong-qiang;KAN Jing;ZHI Shan-ya;MIAO De-qing(Wuxi MNET Equipment Tech Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]无锡海核装备科技有限公司,江苏无锡214000

出　　处：《特种橡胶制品》2022年第6期53-59,共7页Special Purpose Rubber Products

摘　　要：橡胶密封件用于海洋装备时,较高的压缩力会增加设计与制造成本,同时有降低设备可靠性和寿命的风险。鉴于此,以某自升式钻井平台中艉门的EPDM密封橡胶为例,基于弹性体假设和密封模型,根据单轴拉伸试验数据拟合超弹性本构模型参数,通过压缩力实验与有限元分析作对比判断材料参数的精度。基于拟合的本构模型,以压缩力为优化目标,进行橡胶结构的优化,最后对优化前后的关键参数进行对比。结果表明,优化后的橡胶密封件在满足密封性能要求的前提下,重量减轻20%,Mises应力降低47%,压缩力降低20%。该橡胶结构在工程中的成功应用可为同类型优化设计提供参考。Taking the EPDM sealing rubber of the stern door in the self-propelled drifting platform project as an example,based on the elastomer assumption and sealing model,the parameters of the hyperelastic constitutive model were determined according to the uniaxial tensile test data,then the compressive force experiment was compared with the FEA to judge the accuracy of material parameters.Based on the constitutive model,the compressive force was taken as the optimization objective to optimize the rubber structure.Finally,the key parameters before and after the optimization were compared.The comparative analysis showed that under the premise of meeting the sealing performance requirements,the optimized rubber could reduce the weight by 20%,the mises stress by 47%,and the compression force by 20%.The practical application of rubber structure in engineering could provide reference for the similar optimization design.

关 键 词：橡胶 密封 有限元 结构优化 

分 类 号：TQ336.42[化学工程—橡胶工业]