大型液压机3D打印模型结构优化设计研究
发布时间：2018-08-16 12:17
【摘要】：由于大型液压机零部件多、尺度大,新产品研发、销售展示和教学实验中,采用虚拟三维模型不能直观呈现,试制样机成本较大,周期较长,本研究将3D打印技术应用于大型液压机教学展示模型设计制造,缩短了产品研发周期,降低了制造成本。然而,基于用户体验、生产实际以及耐用性等方面的考虑,大型液压机的3D打印模型需要进行一系列的结构优化设计,从而满足许多特殊的需求。本文以三梁四柱大型液压机为例,从3D打印模型的机械强度、刚度、稳定性、材料节约性、整体美观性、实用性等要求出发,对大型液压机3D打印模型进行结构优化设计研究,分别提出了大型液压机3D打印模型的拓扑优化方案和蒙皮框架结构设计方案。为了在拓扑优化时保护模型外形细节,对部件模型进行了特殊的抽壳处理,并利用ANSYS Workbench软件的Shape Optimization模块和Static Structural模块分别对受载荷及边界复杂的大型液压机部件模型内部实体实施了拓扑优化分析,以及优化前后的应力、应变、总变形位移、Y向变形位移的分析对比,进一步验证其拓扑优化结果是否满足强度和刚度要求;采用板壳理论以及材料力学等理论,结合大型液压机辅助部件模型的不同受力情况,设计出符合要求的蒙皮框架结构,并对蒙皮框架结构的基本尺寸进行计算校核,拓扑优化和蒙皮框架结构设计之后的各部件模型被进一步拆分打印实现。各部件模型优化和设计前后的质量变化被呈现出来,并通过计算和分析优化和设计前后各部件模型的质量比率和实际耗材质量比率,验证了本研究中的大型液压机3D打印模型的优化设计方案的可行性和必要性。
[Abstract]:Because the large hydraulic press has many parts and large scale, new product research and development, sales display and teaching experiment, the virtual 3D model can not be visualized, the cost of the prototype is high and the period is longer. In this study, 3D printing technology is applied to the design and manufacture of large hydraulic press teaching demonstration model, which shortens the product development cycle and reduces the manufacturing cost. However, based on the considerations of user experience, production practice and durability, 3D printing model of large hydraulic press needs a series of structural optimization design to meet many special needs. Taking a large hydraulic press with three beams and four columns as an example, from the requirements of mechanical strength, stiffness, stability, material saving, overall aesthetics and practicability of 3D printing model, the structural optimization design of 3D printing model of large hydraulic press is studied in this paper. The topology optimization scheme of 3D printing model of large hydraulic press and the design scheme of skin frame structure are put forward respectively. In order to protect the shape details of the model during topology optimization, a special shell extraction process is carried out for the component model. Using the Shape Optimization module and Static Structural module of ANSYS Workbench software, the topology optimization analysis of the internal entity of the large hydraulic press component model with complex load and boundary is carried out respectively, and the stress and strain before and after optimization are also analyzed. The analysis and comparison of the total deformation displacement and Y direction deformation displacement further verify whether the topological optimization results meet the requirements of strength and stiffness, and adopt the theory of plate and shell and material mechanics, etc. According to the different force condition of the auxiliary parts model of large hydraulic press, the skin frame structure which meets the requirements is designed, and the basic dimensions of the skin frame structure are calculated and checked. After topology optimization and skin frame structure design, each component model is further split and printed. The quality changes before and after the optimization and design of each component model are presented, and the mass ratio of each component model and the actual material quality ratio before and after optimization and design are calculated and analyzed. The feasibility and necessity of the optimal design of 3D printing model of large hydraulic press in this study are verified.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG315.4
本文编号：2185958
[Abstract]:Because the large hydraulic press has many parts and large scale, new product research and development, sales display and teaching experiment, the virtual 3D model can not be visualized, the cost of the prototype is high and the period is longer. In this study, 3D printing technology is applied to the design and manufacture of large hydraulic press teaching demonstration model, which shortens the product development cycle and reduces the manufacturing cost. However, based on the considerations of user experience, production practice and durability, 3D printing model of large hydraulic press needs a series of structural optimization design to meet many special needs. Taking a large hydraulic press with three beams and four columns as an example, from the requirements of mechanical strength, stiffness, stability, material saving, overall aesthetics and practicability of 3D printing model, the structural optimization design of 3D printing model of large hydraulic press is studied in this paper. The topology optimization scheme of 3D printing model of large hydraulic press and the design scheme of skin frame structure are put forward respectively. In order to protect the shape details of the model during topology optimization, a special shell extraction process is carried out for the component model. Using the Shape Optimization module and Static Structural module of ANSYS Workbench software, the topology optimization analysis of the internal entity of the large hydraulic press component model with complex load and boundary is carried out respectively, and the stress and strain before and after optimization are also analyzed. The analysis and comparison of the total deformation displacement and Y direction deformation displacement further verify whether the topological optimization results meet the requirements of strength and stiffness, and adopt the theory of plate and shell and material mechanics, etc. According to the different force condition of the auxiliary parts model of large hydraulic press, the skin frame structure which meets the requirements is designed, and the basic dimensions of the skin frame structure are calculated and checked. After topology optimization and skin frame structure design, each component model is further split and printed. The quality changes before and after the optimization and design of each component model are presented, and the mass ratio of each component model and the actual material quality ratio before and after optimization and design are calculated and analyzed. The feasibility and necessity of the optimal design of 3D printing model of large hydraulic press in this study are verified.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG315.4
【参考文献】
相关期刊论文 前10条
1 陈岩;王士玮;杨周旺;刘利刚;;FDM三维打印的支撑结构的设计算法[J];中国科学:信息科学;2015年02期
2 徐文鹏;王伟明;李航;杨周旺;刘秀平;刘利刚;;面向3D打印体积极小的拓扑优化技术[J];计算机研究与发展;2015年01期
3 朱小明;;三种用于实验教学的三维打印工艺对比[J];机械工程师;2014年07期
4 张曙;;三维打印的现状与未来[J];中国电子科学研究院学报;2013年06期
5 余冬梅;方奥;张建斌;;3D打印:技术和应用[J];金属世界;2013年06期
6 卢秉恒;李涤尘;;增材制造(3D打印)技术发展[J];机械制造与自动化;2013年04期
7 李枝东;刘辛军;;导重法求解单工况的拓扑优化问题[J];机械工程学报;2011年15期
8 谢涛;刘静;刘军考;;结构拓扑优化综述[J];机械工程师;2006年08期
9 崔明涛,陈建军,姜培刚;随机参数连续体结构的动力学拓扑优化[J];应用力学学报;2005年02期
10 左孔天,陈立平,钟毅芳,王书亭,张云清;基于人工材料密度的新型拓扑优化理论和算法研究[J];机械工程学报;2004年12期
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