双剪式升降平台的结构仿真分析与优化

Finite element analysis and optimization of double-scissor lifting platform

双剪式升降平台是工业承载的重要机械设备。但在使用过程中,存在应力集中的情况,导致强度不符合使用要求,且制造成本较高。因此,基于双剪式升降平台,利用SolidWorks软件建立三维模型,并在Hypermesh与Abaqus中对其强度进行有限元分析与优化。分析表明,主要承力部件的强度均可靠,但轴套存在局部应力集中,强度不符合要求。通过优化,降低了整体应力,并提高了轴套的强度,有效避免了轴套的应力集中,增加了安全系数,同时降低了双剪式升降平台的成本。

The double-scissor lifting platform is an important mechanical equipment.In its operation,there might be stress concentration,which would lead to strength failure and high manufacturing cost.Therefore,this paper establishes a 3D model of the double-scissor lifting platform by Solidworks,and investigates and optimizes its mechanical performance by finite element method in Hypermesh and Abaqus.The results show that the mechanical strength of the main load-bearing structures is reliable.However,there is stress concentration in the shaft sleeve,and its mechanical strength is not enough.Through optimization,the overall stress is reduced,and the strength of the shaft sleeve is improved,thus the stress concentration is effectively avoided,the safety factor is increased,and the cost of the double-scissor lifting platform is reduced.