镁合金熔体中超声传播的数值模拟  

Numerical Simulation of Ultrasonic Propagation in Magnesium Alloy Melt

作　　者：邵志文[1] 乐启炽[1] 张志强[1] 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程教育部重点试验室,辽宁沈阳110004

出　　处：《铸造》2011年第3期271-275,共5页Foundry

基　　金：国家重点基础研究发展计划项目(2007CB613701);国家自然科学基金资助项目(50974037)

摘　　要：根据声波的折反射原理,分析和讨论了超声在变幅杆与镁合金熔体界面间的传播情况。在此基础上,分别采用积分法和有限元法对镁合金熔体中超声传播情况进行了数值模拟,由此给出了超声在镁合金熔体中的声压及声强特征量的分布。并且探讨了超声功率及频率对镁合金熔体中声压分布的影响。结果表明,不同的超声频率对应着不同的声压分布,而超声功率对于声压分布的影响则相对较小。Based on the acoustic refraction and reflection principles,ultrasonic propagation between amplitude transformer and magnesium alloy melt has been analyzed and discussed.In addition,numerical simulation of ultrasonic propagation in magnesium alloy melt has also been carried out with integration method and finite element method,respectively.The distributions of characteristic quantities including acoustic pressure and sound intensity in magnesium alloy melt were obtained,and the effects of ultrasonic power and frequency on acoustic pressure distribution were also investigated.The results show that different ultrasonic frequency makes different acoustic pressure distribution in magnesium alloy melt,while ultrasonic power has little effect on it.

关 键 词：镁合金熔体 超声 数值模拟 

分 类 号：TG146.22[一般工业技术—材料科学与工程]