管道接口橡胶密封圈力学性能研究及应用

发布时间：2017-12-28 21:15

本文关键词：管道接口橡胶密封圈力学性能研究及应用　出处：《河南工业大学》2011年硕士论文　论文类型：学位论文

【摘要】：地下管线做为城市的“生命线”在现代化城市发展中显得越来越重要。各种地下管线在城市的“新陈代谢”中起着不可替代的作用。随着地下管线系统的重要性被逐渐的认识到，从管线的选材到管线接头的各种形式的改进都得到提高。多数的地下管线破坏主要是由地震作用造成的，因此在选择管材及管线接头时除了其应满足功能需求外，有更好的抗震性能成为选择的主要标准。柔性管道接口有多方面的优越性，尤其是其具有优良的抗震性能，因此目前柔性接口已在管线铺设工程中得到广泛应用。但至今为止国内对管道柔性接口的力学性能研究相对较少。对此，本文以震害中管道破坏的基本形态为出发点，，开展了对承插式管道柔性接口的力学性能基础研究和数值模拟分析。本文探讨了管道柔性接口密封圈橡胶材料的基本力学性能，对描述橡胶材料的应变能函数和本构模型进行了分析，通过橡胶材料均匀变形形式研究了橡胶材料本构模型常量的确定方法，同时对橡胶材料小变形范围内的力学性能做了简化分析。根据橡胶材料单轴拉伸试验数据，拟合确定了管道橡胶材料本构模型的常量，为管道接头密封圈的模拟计算做好准备。本文应用ABAQUS有限元软件建立了管道胶圈柔性接口的力学模型，模拟了管道胶圈柔性接口的装配过程和力学性能，分析了胶圈装配应力和接触压力；模拟了在内部水压作用下胶圈和管壁的接触压力，分析了胶圈和管壁的摩擦力及柔性接口所能承受的最大轴向拉力，并与管道胶圈柔性接口的轴向拉伸试验结果进行了对比分析。总结了柔性管道接头中密封圈的工作性能，给出了承插式柔性管道接口最大轴向拉力值的简化计算方法。为管道胶圈柔性接口的力学性能分析做了一些基础性的研究工作。
[Abstract]:As the lifeline of the city, underground pipelines are becoming more and more important in the development of modern cities. All kinds of underground pipelines play an irreplaceable role in the "metabolism" of the city. As the importance of the underground pipeline system is gradually recognized, the various forms of improvement from the material selection of the pipeline to the pipeline joint have been improved. Most of the underground pipeline failure is mainly caused by earthquake action. Therefore, when selecting pipes and pipe joints, it has better seismic performance to become the main criteria of selection, besides satisfying functional requirements. The flexible pipe interface has many advantages, especially its excellent seismic performance. Therefore, the flexible interface has been widely applied in pipeline laying engineering. But so far, there are relatively few studies on the mechanical properties of flexible pipe interfaces in China. Therefore, based on the basic form of pipeline damage in earthquake damage, the basic research and numerical simulation analysis of mechanical performance of flexible interface of socket pipe are carried out.
【学位授予单位】：河南工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH136

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