基于ANSYS的汽车起重机起重臂参数化设计研究

发布时间：2018-04-30 04:04

本文选题：汽车起重机 + 起重臂　；参考：《沈阳建筑大学》2011年硕士论文

【摘要】：随着现代工程建设的增加,汽车起重机已经成为施工中重要的起重设备,缩短产品结构的设计周期,也已成为汽车起重机现代设计发展中的重要部分。对一个复杂结构进行有限元建模和分析时,所涉及到的参数量多,手工计算繁琐,效率低且易出差错。因此,本文利用ANSYS软件的命令流功能,即ANSYS的参数化设计语言APDL,建立汽车起重机起重臂结构参数化有限元分析系统,实现汽车起重机起重臂的参数化设计过程,在优化汽车起重机结构,提高工作性能,降低其产品开发成本等方面具有一定的理论及实际意义。本文在查阅国内外相关文献的基础上,对汽车起重机实际工作状况进行研究,依据起重机设计规范(GB/T3811-2008),选取汽车起重机的性能参数、起重臂的结构尺寸参数和载荷参数为特征参数;依据有限单元法基本理论,确定了汽车起重机起重臂结构简化的原则及处理方法,利用有限元分析软件ANSYS,建立了QY20汽车起重机起重臂结构的有限元分析模型;在此基础上,基于ANSYS的二次开发功能,利用参数化设计语言APDL,对QY20汽车起重机的起重臂结构进行参数化建模,并在典型工况下对参数化模型进行了有限元分析,获得了相应的应力分布情况,实现了汽车起重机起重臂的参数化设计过程。根据对比参数化设计模型和利用菜单功能所建模型的应力分布情况和最大应力值,发现二者结果一致,验证了汽车起重机起重臂参数化设计过程的有效性。选取对应型号的汽车起重机进行起重臂的结构应力测试试验,获得了起重臂结构在相应工况下的应力试验结果,结果表明:参数化设计过程符合实际情况;最后,结合VB(Visual Basic 6.0)的界面设计功能,编制程序,实现了汽车起重机起重臂参数化设计过程的可视化,完善了汽车起重机起重臂的参数化设计研究。本文在汽车起重机起重臂结构进行设计时,将参数化设计概念引入到有限元结构分析中,根据调整起重臂的特征参数,实现了自动生成分析模型并完成相应的分析过程,缩减了产品设计周期,达到了起重臂结构参数化设计的目的。
[Abstract]:With the increase of modern engineering construction, truck crane has become an important lifting equipment in construction, shortens the design cycle of product structure, and has become an important part in the development of modern design of truck crane. When a complex structure is modeled and analyzed by finite element method, the parameters involved are many, the manual calculation is tedious, the efficiency is low and the error is easy to occur. Therefore, using the command flow function of ANSYS software, that is, the parameterized design language of ANSYS, a parameterized finite element analysis system of truck crane hoist structure is established, and the parameterized design process of truck crane hoist boom is realized. It has certain theoretical and practical significance in optimizing the structure of truck crane, improving its working performance and reducing its product development cost. On the basis of consulting relevant documents at home and abroad, this paper studies the actual working condition of truck crane, and selects the performance parameters of automobile crane according to the crane design code GBP / T3811-2008. The structural dimension parameters and load parameters of the lifting arm are characteristic parameters, and the simplified principle and treatment method of the lifting arm structure of the truck crane are determined according to the basic theory of the finite element method. The finite element analysis model of QY20 truck crane boom structure is established by using finite element analysis software ANSYS.The second development function of ANSYS is based on the finite element analysis model. In this paper, the parameterized modeling of the hoisting arm structure of QY20 truck crane is carried out by using the parameterized design language APDL. the finite element analysis of the parameterized model is carried out under typical working conditions, and the corresponding stress distribution is obtained. The parameterized design process of truck crane boom is realized. According to the comparison of the stress distribution and the maximum stress value between the parameterized design model and the model based on menu function, it is found that the two results are consistent, and the validity of the parameterized design process of the crane boom is verified. The structural stress test results of the corresponding type of truck crane are obtained. The results show that the parameterized design process is in line with the actual situation; finally, the stress test results of the boom structure under the corresponding working conditions are obtained, and the results show that the parameterized design process is in line with the actual situation. Combined with the interface design function of VB(Visual Basic 6.0), a program is compiled to realize the visualization of the parameterized design process of the hoist jib of the truck crane, and to perfect the parameterized design research of the hoist jib of the truck crane. In this paper, the concept of parameterized design is introduced into the finite element structural analysis when the crane boom structure is designed. According to the adjustment of the characteristic parameters of the boom, the analysis model is automatically generated and the corresponding analysis process is completed. The product design cycle is reduced and the parameterized design of the lifting arm structure is achieved.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH213.3

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