基于有限元与动态仿真的陶瓷过滤机结构优化设计

【作者】 张正旺；

【导师】 赵运才；

【作者基本信息】 江西理工大学 ， 机械设计与理论， 2009， 硕士

【摘要】 本课题基于有限元分析与动态仿真技术,利用ANSYS软件及ADAMS软件提供的优化模块对安徽铜都特种环保设备有限公司研制的TT型陶瓷过滤机结构进行优化设计。首先针对陶瓷过滤机搅拌机构存在的问题,综合优化理论及搅拌原理分析了搅拌机构的运动学参数对搅拌性能的影响,利用ADAMS软件对搅拌机构进行优化。在ADAMS中生成搅拌机构的仿真模型,进行运动学与动力学仿真。在此基础上,以搅拌架在搅拌过程中获得较大的搅拌速度和机构的最小传动角最大为优化的分目标函数,以曲柄摇杆机构的位置尺寸参数为设计变量,利用ADAMS软件的优化模块实现了陶瓷过滤机双曲柄摇杆机构的双目标优化。最后,在有限元分析软件ANSYS中建立陶瓷过滤机支撑机架的有限元模型,对其进行静力分析,并利用ANSYS的优化模块对支撑机架进行优化设计。以支撑机架的总体积为最小为优化目标,对支撑机架尺寸参数的优化进行了初步的探讨。陶瓷过滤机搅拌机构的动态仿真及优化结果表明,通过ADAMS软件15次迭代优化能够使搅拌架的最大角速度提升23.67%,机构的最小传动角增大了7.62%,使搅拌机构的搅拌速度和传力性能得到改善,提高了陶瓷过滤机搅拌机构的搅拌效率。通过对陶瓷过滤机支撑机架的有限元分析及优化,发现优化后的结构可节省约43%的原材料,为陶瓷过滤机支撑机架的设计提供了指导作用。本课题结合陶瓷过滤机实际工况解决了陶瓷过滤机的结构设计中存在的问题,获得了合理的、经济性高的机械结构。表明基于有限元分析及动态仿真的结构优化设计技术可以在提高产品的设计质量、降低开发与生产制造成本及提高产品在市场上的竞争能力等方面发挥重要作用。更多还原

【Abstract】 Based on Finite Element Analysis and Dynamic Simulation Technology, this paper focuses on optimizing the structure of TT-type ceramic filter developed by Anhui Tongdu Special Environmental Facilities Co., Ltd. by the means of optimization module provided by ANSYS software and ADAMS software.Firstly, based on problems found in the agitating mechanism of ceramic filter, the agitator performance affected by kinematic parameter of agitating mechanism is analyzed incorporating optimization theory and stirring principle, and agitating mechanism is optimized by ADAMS. Simulation model of agitating mechanism is generated in ADAMS to conduct kinematics and kinetics simulation. Furthermore, taken the maximum angular velocity of the agitator and the minimum transmission angle of the mechanism as the target function for optimization, and the position dimension parameters of crank-rocker mechanism as design variable, the optimization configuration of crank-rocker mechanism in ceramic filter is achieved by ADAMS optimization model. Lastly, finite element model of the supporting stand in ceramic filter is built in ANSYS, the finite element analysis software, to conduct static analysis and optimize the design of the supporting stand by ANSYS optimization module. Taken the total volume of the supporting stand being minimum as the optimization target, a preliminary discussion on the optimization of dimension parameters of the supporting stand is carried out in this paper.The dynamic simulation and optimization results of the agitation mechanism of ceramic filter showed that the maximum angular velocity of the agitator can be raised by 30.3 percent by the means of 15-times ADAMS iterative optimization and the minimum transmission angle of the mechanism can be raised by 9.6 percent. Through the finite element analysis and optimization of the supporting stand of ceramic filter, it is found that the optimized structure is able to save around 43 percent of raw materials, which can provide guidance for the design of the supporting stand of ceramic filter.Incorporating the actual working conditions of ceramic filter, the thesis solved problems found in the structure design of ceramic filter and obtained a mechanical structure which is reasonable and economical. It is stated that the Structure Optimization Design based on Finite Element Analysis and Dynamic Simulation can play an important role in the improvement of products’ design quality, decrease of development and production costs and enhancement of market competitiveness.更多还原