Spherical-cymbal换能器端帽自由胀形回弹预测与控制  

Forecast and Control of the Spring-back of Spherical-cymbal Transducer's End-caps in Free-bulging

作　　者：吴石林[1] 张玘[1] 黄芝平[1] 

机构地区：[1]国防科学技术大学仪器科学与技术系,长沙410073

出　　处：《精密成形工程》2010年第4期18-22,共5页Journal of Netshape Forming Engineering

摘　　要：为更经济地制造出质量更高的Spherical-cymbal换能器端帽,在其成形中用自由液压胀形工艺取代传统的冲压工艺,并对其自由胀形中的回弹问题进行了重点研究。采用ANSYS/LS-DYNA软件对端帽的自由胀形回弹量进行了预测,并根据约束条件及有限元模拟结果提出了回弹控制措施。实验结果验证了采用有限元数值模拟进行Spherical-cymbal换能器端帽自由胀形回弹预测与控制的可行性。In order to manufacture spherical cymbal transducer＇s end caps with higher quality and lower costs, free hydro-bulging technology is used to substitute the traditional stamping technology, and the emphases are laid on the study of the spring-back of end-caps in free hydro bulging. ANSYS/LS DYNA software is adopted to forecast the spring-back of end caps in free hydro bulging. The controlling method is brought forward based on restrictions and the FEM simulation results. Experiment results prove that it＇s feasible to forecast and control the spring-back of end caps by FEM numerical simulation.

关 键 词：Spherical—cymbal换能器 端帽 自由胀形 回弹 数值模拟 

分 类 号：TP212.12[自动化与计算机技术—检测技术与自动化装置] TG306[自动化与计算机技术—控制科学与工程]