飞轮挤压成型过程有限元仿真分析  

Finite Element Analysis of Flywheel Extrusion Forming Process

作　　者：姚小强[1] 

机构地区：[1]江苏省盐城技师学院机械工程系,江苏盐城224000

出　　处：《机械设计与制造》2016年第12期132-134,共3页Machinery Design & Manufacture

基　　金：江苏省自然科学基金项目(BK2008197)

摘　　要：挤压成型是飞轮的一种新型加工方法,不仅加工效率高、成本低,而且可以有效提高飞轮的机械性能。为了分析挤压成型过程,在ANSYS软件中建立了飞轮挤压的二维轴对称模型,对成型过程中飞轮的等效应力、塑性应变和接触压力进行分析。结果表明:挤压过程中,飞轮的等效应力和塑性应变呈对称分布且在内侧中点附近最大、外侧中点附近次之、上下表面附近最小,等效应力和塑性应变是增大的。挤压成型后,飞轮与模具间存在连续不断的接触应力,飞轮的轮廓是完整的;飞轮外缘右上侧存在一定的挤压间隙且间隙值小于零,在该区域铝合金材料受到过度挤压,可适当改变模具的结构、尺寸或者进一步采用磨削等方法提高飞轮的精度。Extrusion is a new processing method of the flywheel, it not only has high processing efficiency, low cost, but also can improve the mechanical performance of the flywheel.The two-dimensional axisymmetric model of flywheel was established in ANSYS software in order to analyze the process of extrusion, and then the equivalent stress, plastic strain and contact stress were analyzed. The results show that： the flywheel of the equivalent stress and plastic strain distribution is symmetrical and the maximum stress and strain appears near the inner midpoint, the outer midpoint next, and the last is the top and bottom surface, the stress and strain is increased in the process. After extrusion, There are continuous contact stress between flywheel and mold, the outline of the flywheel is complete. The upper right side of outer edge of the flywheel has certain extrusion gap and the gap value is less than zero, the aluminum alloy material was excessive squeezed in this area. To improve the accuracy of the flywheel, the structure and size of the mold can be changed appropriately or Using the method of grinding

关 键 词：飞轮 挤压成型 ANSYS 

分 类 号：TH16[机械工程—机械制造及自动化]