超大型柔性罐笼的设计与力学性能分析

发布时间：2018-06-18 13:47

本文选题：超大型罐笼 + 柔性罐笼　；参考：《中国矿业大学》2015年硕士论文

【摘要】：超大型柔性罐笼在国内仍处于起步阶段,这种罐笼荷载重、变形大,罐体变形会影响罐笼与罐道、钢丝绳、承罐装置的相互作用。本文研究了柔性罐体的设计问题,分析了罐笼在偏载状态下的力学性能。本文建立罐笼的三维模型,编制参数化的有限元计算程序,分析盘体结构,采用控制变量法,对不同方案下的柔性罐体进行偏载和疲劳分析,讨论立柱型式、斜筋、罐耳布置等对罐体强度、刚度和抗疲劳性能的影响,对滚轮罐耳、立柱的刚度分配进行优化设计,为超大型罐笼的设计提供依据。针对立柱的受力特点,研究了叠加原理不成立时细长梁的挠曲变形,给出挠曲方程、截面应力、应变的计算式,讨论了梁在承受动载荷时的变形情况,将结论用于罐体的力学分析。罐体是超静定结构,本文将盘体视为刚性的,混合使用力法、位移法,由立柱的弯矩方程、挠曲方程、截面转角方程、盘体的平衡方程、罐体的几何连续性方程建立平面偏载作用下的静力学模型,利用旋转变换矩阵建立空间静偏载模型,本文还考虑罐道缺陷对柔性罐笼在提升过程中的影响,分析罐道与罐耳之间的相互作用力,推导了超大型柔性罐笼偏载提升时的动力学方程,同样的方式也能用于罐笼在其他状态下的力学分析。
[Abstract]:The superlarge flexible cage is still in its infancy in China. This kind of cage is heavily loaded and deformed, and the deformation of the tank body will affect the interaction between the cage and the cage, the wire rope and the tank bearing device. In this paper, the design of flexible tank is studied, and the mechanical properties of cage under eccentric load are analyzed. In this paper, the three-dimensional model of the cage is established, the parameterized finite element calculation program is worked out, the structure of the plate body is analyzed, the deflection load and fatigue of the flexible tank under different schemes are analyzed by the method of control variables, the type of column and the inclined reinforcement are discussed. The influence of jar ear arrangement on the strength, stiffness and fatigue resistance of tank body is discussed. The optimum design of stiffness distribution of roller drum ear and column is carried out, which provides the basis for the design of super large cage. According to the stress characteristics of the column, the flexural deformation of the slender beam is studied when the superposition principle is not established, the flexural equation, the calculation formula of the section stress and strain are given, and the deformation of the beam under the dynamic load is discussed. The conclusion is applied to the mechanical analysis of the tank. The tank is a statically indeterminate structure. In this paper, the disk body is regarded as rigid, the mixed force method, the displacement method, the moment equation of the column, the deflection equation, the section rotation equation, the balance equation of the disc body. The geometric continuity equation of the tank is used to establish the static model under the action of plane eccentric load, and the spatial static deflection model is established by using the rotation transformation matrix. The influence of the defect of the tank path on the lifting process of the flexible cage is also considered in this paper. In this paper, the interaction force between the tank tunnel and the jar ear is analyzed, and the dynamic equation of the lifting of the oversized flexible cage is derived. The same method can also be used for the mechanical analysis of the cage in other states.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD531.1

【参考文献】