OC25型万能转换开关的动力学仿真与结构参数优化

发布时间：2018-04-27 14:51

本文选题：万能转换开关 + 有限元分析　；参考：《电子科技大学》2014年硕士论文

【摘要】：万能转换开关是一种多档式,控制多个回路的主令电器,万能转换开关主要用于多种控制线路的转换、配电装置线路的遥控和转换、电压表的换相测量控制等。万能转换开关是一种手动操作的低压电器产品,通常基于凸轮形状和排列的改变,控制由多个触头组成的接触系统的工作状态以达到各种不同的需求。万能转换开关其核心部分是控制其工作状态的凸轮机构。传统的设计流程一般都是根据实际的需求和规格,通过设计人员设计凸轮的简单几何形状和运动状态来满足从动件的简单运动要求。确定设计方案后,便开始开模生产试验样件,产品的各项测试都在样件制作完成之后才能进行因此问题如果一旦发生,不仅需要增加必需的设计成本,而且相关的前期工作也需要去改动,问题如果发生的越晚,重新设计所付出的的成本增加的越多,会带来大量的重复设计工作,还有延长设计研发周期,带来更大的损失,所以预估产品的特性就成为了产品在设计过程中的重要环节。本课题主要针对OC25型万能转换开关作为研究对象,使用ANSYS/LS-DYNA显式动力学对万能转换开关主要工作部分的工作情况进行动态模拟仿真,通过UG对万能转换开关的几何模型进行修改,并通过接口将几何模型导入ANSYS/LS-DYNA建立适当的有限元模型进行分析,分别通过ANSYS和LS-DYNA的后处理器对万能转换开关在工作过程中的应力分布,应力随时间的变化,各零件之间相互接触的情况和接触力等结果进行分析,通过预估万能转换开关的工作情况,对万能转换开关进行分析,并提出优化的方法。在动力学仿真过后,通过分析动力学仿真结果,选取转换开关的部分参数进行优选,主要通过分析不同的参数对万能转换开关的工作状态的影响,拟合出各参数与万能转换开关工作状态的关系,找出较为良好的数值,从而达到对万能转换开关的优化效果,提高万能转换开关的产品质量。
[Abstract]:Universal switching switch is a kind of multi-stage main control device which controls multiple circuits. The universal switch is mainly used for the conversion of various control lines, the remote control and conversion of distribution line, the measurement and control of voltmeter commutation, etc. Universal switch is a manual operation of low-voltage electrical products, usually based on the shape and arrangement of the cam changes, control the working state of the contact system composed of multiple contacts to achieve a variety of requirements. The core part of universal switch is the cam mechanism which controls its working state. The traditional design flow is generally according to the actual requirements and specifications through the design of the simple geometric shape and motion state of the cam to meet the simple motion requirements of the follower. Once the design plan has been determined, we begin to open the mold to produce the test sample, and all tests of the product can only be carried out after the sample has been made, so if the problem arises, not only will the necessary design cost be increased, And the related preliminary work also needs to be changed. The later the problem occurs, the more the cost of the redesign will increase, which will lead to a lot of repetitive design work, as well as the extension of the design research and development cycle and the greater loss. Therefore, estimating the characteristics of the product has become an important part of the design process. This paper mainly aims at the OC25 universal converter switch as the research object, uses ANSYS/LS-DYNA explicit dynamics to simulate the main working part of the universal converter switch, and modifies the geometric model of the universal converter switch by UG. Then the geometric model is imported into ANSYS/LS-DYNA to establish the appropriate finite element model for analysis. The stress distribution and the change of stress with time during the operation of universal switch are analyzed by the post-processor of ANSYS and LS-DYNA, respectively. The results of contact and contact force between different parts are analyzed. By predicting the working condition of universal switch, the universal switch is analyzed, and the optimization method is put forward. After dynamic simulation, by analyzing the results of dynamic simulation, some parameters of switching switch are selected for optimal selection, mainly by analyzing the influence of different parameters on the working state of universal switching switch. The relationship between the parameters and the working state of the universal converter switch is fitted, and a better numerical value is found, thus the optimization effect of the universal converter switch is achieved and the product quality of the universal converter switch is improved.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM564

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