【作者】 黄冰阳；

【导师】 陈奇；

【作者基本信息】 哈尔滨工程大学 ， 动力机械及工程， 2008， 硕士

【摘要】 液压螺栓是现代船舶轴系法兰用的一种新型联接件,尤其用在传递高强度、大扭矩的舰船轴系上。它克服了传统铰制螺栓的缺点,并满足了轴系对螺栓材料提出的高强度性能的要求,成为联接件的一种新的变革。开展此课题研究具有重要的应用价值和经济价值,并能为国内此领域的研究提供了借鉴和参考。本文在液压螺栓受力分析的基础上,从弹性力学的Lame公式出发,考虑液压螺栓、锥套和法兰的状态,建立了液压螺栓弹性力学模型;从理论上进行了液压螺栓和锥套结构形式的强度分析、液压螺栓受力分析以及最佳预紧力的研究,提供了一套准确可靠的液压螺栓设计公式,并且开发了一套简便实用的计算软件。在设计研究的基础上,对直径量为90mm液压螺栓进行了拉伸、装拆、剪切和材料性能试验,验证了理论设计的正确性,并为工程应用提供了借鉴。利用ANSYS软件,使用非线性接触分析法,针对液压螺栓的结构特点进行了平面和空间三维有限元的分析,验证了液压螺栓理论分析的正确性。对仿真数据进行比较分析后,为液压螺栓结构设计提出了改进意见。本文研究表明:在最佳预紧力时,液压螺栓抗剪传扭占总扭矩的95%左右,法兰面摩擦阻力传扭占总扭矩的5%左右;在弹性范围内,锥套和法兰孔间隙量最大可以取0.18%D(没有考虑表面粗糙度影响);首次实现了非线性有限元液压螺栓三维实体分析,为国内此领域研究提供了一种有效的分析方法;进行了液压螺栓性能试验研究,对工程实践具有一定的指导意义。更多还原

【Abstract】 Hydraulic bolt is a novel type of joint part for the application in shaft flange of modern ship, especially used in the case of high strength and large torque for shaft system of military vessels. It overcomes the shortcoming of the traditional hinge bolt system, and meets the requirement of the high-intensity performance of bolt materials for shaft system; it has been a new revolution of connector. It is of great application and economic values to perform research on this subject, beneficial reference can also be provided for domestic research in this field.In this thesis, on the basis of force analysis of hydraulic bolt, starting from the Lame formula in Elasticity, the elastic model of hydraulic bolt is developed in which the state of hydraulic bolt, sleeve and flange are all taken into account. Strength analysis of hydraulic bolt and sleeve structure and force analysis of bolt hydraulic are all theoretically analyzed. The optimal preload is also investigated analytically. A set of accurate and reliable hydraulic bolt design formulas are presented, software which is extremely convenient for the practical application is established. Based on the investigation on design, experiments on tension, assembly and disassembly, shear and materials performance test are all carried out on hydraulic bolts of which diameter is 90mm, then the validity of the theoretical design have been verified. In addition, some useful reference will be provided for the engineering application.Using of nonlinear contacting analysis approach, according to the structure feature of hydraulic bolt, the plane and space 3-D finite element analysis of hydraulic bolt are conducted by ANSYS software, then the correctness of theoretical analysis is verified. Analyzing the simulation data through comparison, suggestion for improvement of the hydraulic bolt structure has been proposed.Studies presented in this thesis show that: at the optimal preload, anti-shear torque is about 95 percent of the total for hydraulic bolts, and flange surface frictional torque accounts for about 5 percent of the total; In the elastic range, the maximum gap between sleeve and flange hole can be 0.18% D (did not consider the surface roughness effects); Non-linear 3D finite element analysis of hydraulic bolt is achieved for the first time, can supply a more realistic and effective analytical method for domestic research in this field; some experiments are also performed to study the performance of hydraulic bolts, they will piay a important significance role in the engineering scene.更多还原