摘要
为了提高井道施工电梯吊笼的力学性能,进一步实现吊笼结构减重的目的,文中采用SolidWorks三维软件对吊笼进行建模,通过拓扑算例对吊笼进行结构拓扑分析,提出一种针对拓扑优化模型的处理方法,将处理后的模型导入到ANSYS中进行静力学分析,计算了 4种极限工况下的总变形量和最大应力.经验证,吊笼最大应力远远小于材料的许用应力,保证了系统结构强度的可靠性,并分析了施工电梯包括优化后吊笼在内的整体激振频率,获取了优化后吊笼前6阶固有频率,通过系统激振频率与吊笼固有频率的对比,得到容易发生共振的运行速度.结果表明:优化后的吊笼结构布局更合理,且满足各项力学性能,达到了轻量化的设计要求,并避免了结构发生共振的可能.
Abstract
In this article,in order to improve the elevator cage's mechanical properties in shaft construction and ensure its weight reduction,the SolidWorks 3D software is used to model the cage;the topological examples are applied to explore the cage's structure;a method is proposed to deal with the topological optimization model;the treated model is imported into ANSYS for the static analysis;both the total deformation and the maximum stress under four limit conditions are calculated.It is verified that the cage's maximum stress is far less than the material's allowable stress,which ensures that the structural strength is reliable.In addition,efforts are made to explore the overall vibration frequency of both the construction elevator and the cage after optimiza-tion;then,the optimized cage's first six-order natural frequency is identified.The system natural frequency is compared with the cage's vibration frequency;then,the speed prone to resonance is worked out.The results show that after optimization,the cage with a more reasonable structural layout has desirable mechanical properties,meets the design requirement of lightweight,and a-voids the possibility of structural resonance.
维普
万方数据