基于ANSYS的液压支架顶梁多工况载荷分析和结构优化.docVIP

硕士学位论文 （专业学位） 基于ANSYS的液压支架顶梁多工况载荷分析和结构优化  摘要 液压支架是实现高产高效综合采煤机械化和自动化的重要配套设备，它以高压液体为动力，由金属构件和若干液压元件组成。液压支架的设计质量决定了支架的整体性能、制造成本和安装维护成本。随着科学技术的发展，计算机辅助设计极大地提高了液压支架的设计效率和设计水平。本文的主要任务是提出若干液压支架顶梁结构的优化设计方法，并通过计算机软件计算验证，目标是提升液压支架顶梁的结构性能并降低成本。主要内容如下： 1、建立液压支架静力学平面受力模型和静力学平衡方程，并对静力学平衡方程进行求解，推导支架垂直支撑合力及其作用点位置、前后连杆轴力等的数学表达式。 2、利用有限元软件ANSYS Workbench 13.0建立液压支架顶梁的实体模型，并得出其在四种不同工况下的最大等效应力云图。然后对计算结果进行分析，提出顶梁结构优化设想。并对所建立的顶梁模型进行修改、重新计算，验证该优化设想的可行性。 3、应用ANSYS Workbench 13.0中的Design Exploration模块，以顶梁在满足强度要求条件下质量最轻为优化目标，进一步对顶梁模型进行参数优化。根据所建顶梁模型，选取若干尺寸参数作为优化参数，建立参数优化系统并进行优化计算，得到最优顶梁尺寸参数。最后对比优化结果，提出进一步优化设想。 关键词：液压支架 静力学分析 有限元计算 优化设计 ABSTRACT The hydraulic support is an important equipment to achieve high production and high efficiency integrated coal mining mechanization and automation, and it is composed of metal components and hydraulic components. The quality of the design of hydraulic support determines the overall performance of the hydraulic support, the cost of manufacture, transprotation and installation. With the development of science and technology, computer-aided design greatly improves the design efficiency of the hydraulic support. In this paper the goal task is to propose some optimum methods of design for the Hydraulic Support Beam, and using computer-aided software to check the above methods.The goal of the methods is to decrease the cost of manufacture, transprotation and installation. The main content is as follows: 1. Establishing the statics plane model and statics equilibrium equation of hydraulic support, and solving the equation to get the expression of the join forces of the beam and the axial force of the fornt and back rods. 2. Using ANSYS Wrokbench 13.0 to establish the finite element solid model of the hydraulic support beam, and to calculate the stress in four different models. Then to propose the optimum idea after analyzing above results. After that to check the idea with chaning the above models and recalculation. 3. Optimizing the models furthermore