基于ANSYS的起重机结构设计优化
2021-08-04李聪张亚鹏连冬晓
李聪 张亚鹏 连冬晓



摘 要:在随车起重机的前期设计论证阶段,需进行详细的结构设计及强度校核计算,结构设计包括整机外形的布置、技战术指标的实现及三维模型的建立等方面,在初步确定三维模型结构后,可对整体结构进行有限元分析计算,加入强度及刚度有限元计算后,可有效模拟实际工作状况中部件的受力状况,从而对危险受力点及截面进行预判,根据分析结果對结构进行改变并重新分析直至受力状况优化,从而能对结构优化及实际生产起到有效的指导作用。正确的有限元分析常常会有效的提高产品质量,以致减小实际生产的成本,对于从设计到生产都能起到极大的促进作用。
关键词:随车起重机 三维模型 有限元分析 结构优化
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Abstract:In the preliminary design demonstration stage of the truck-mounted crane, detailed structural design and strength check calculations are required. The structural design includes the layout of the overall machine shape, the realization of technical and tactical indicators, and the establishment of three-dimensional models. The three-dimensional model structure is initially determined After that, finite element analysis and calculation of the overall structure can be carried out. After adding the finite element calculation of strength and stiffness, it can effectively simulate the force status of the components in actual working conditions, so as to predict the dangerous force points and cross-sections. According to the analysis results The structure is changed and re-analyzed until the stress condition is optimized, which can effectively guide the structure optimization and actual production. Correct finite element analysis can often effectively improve product quality, so as to reduce the actual production cost, which can greatly promote the process from design to production.
Key words:Truck mounted crane, 3D model, Finite element analysis,Structure optimization
1 引言
随车起重机是指安装在汽车底盘上,在一定范围内垂直提升和水平搬运重物的起重机械,又称随车吊,属于物料搬运机械,是众多起重运输机械中的一个分支。[1]对于随车起重机而言,其主要受力部件为底座、立柱、动臂、吊臂等,本文中主要以立柱及动臂为例介绍静态结构受力分析对结构进行优化的方法,此方法同样适用于机械行业的其他领域。
ANSYS Workbench的分析过程一般包括三部分:前处理模块、分析计算模块、后处理模块。前处理模块主要由模型建立和网格划分组成;分析计算模块包括边界条件的设置、载荷的添加及求解等;后处理模块是有限元分析最重要的环节,它会对计算结果进行详细分析,从而得到结构的响应状态。……
