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

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.