基于ABAQUS和ADAMS的悬臂式起重机结构设计与刚柔耦合动力学分析

发布时间：2018-11-11 19:51

【摘要】：直接加热式自耗电极电弧炉在熔炼过程中碳棒电极会被不断消耗,需要设计一种自动调整碳棒电极与矿物接触位置的电极夹持起重机构。文中先给出结构方案并对传动丝杠进行设计,在Pro/E中建立悬臂式起重机三维模型并装配出整体机构。考虑丝杠构件驱动电极夹持悬臂上下移动,用柔性体替代刚体进行分析,以模仿真实运动情况。利用ABAQUS做模态分析,导出MNF文件到ADAMS中,建立机构的刚柔耦合模型。动力学分析输出丝杠的螺旋副受力、电极夹持悬臂实际位移、显示传动丝杠集中应力节点位置。将刚体丝杠与柔性体丝杠的刚柔耦合综合分析结果进行对比,对避免螺旋传动失效,整体机构设计进一步优化,提供了可靠依据。
[Abstract]:The carbon rod electrode will be consumed continuously in the smelting process of direct heating consumable electrode arc furnace. It is necessary to design a kind of electrode clamping mechanism which can automatically adjust the contact position between carbon rod electrode and mineral. In this paper, the structure scheme is given and the drive lead screw is designed. The 3D model of the cantilever crane is established in Pro/E and the whole mechanism is assembled. In order to simulate the real motion of the cantilever the flexible body is used instead of the rigid body to analyze the upper and lower motion of the cantilever which is driven by the lead screw component. Using ABAQUS to do modal analysis, the MNF file is exported to ADAMS, and the rigid-flexible coupling model of the mechanism is established. The dynamic analysis of the force on the screw pair of the output lead screw and the actual displacement of the cantilever held by the electrode show the position of the concentrated stress node of the drive lead screw. By comparing the results of the rigid-flexible coupling analysis between the rigid body lead screw and the flexible body lead screw, the reliable basis is provided for avoiding the failure of the screw drive and further optimizing the design of the whole mechanism.
【作者单位】：昆明理工大学机电工程学院;
【基金】：国家自然科学基金资助项目(51365021)
【分类号】：TH21

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