机械波的能流及其应用  

Energy Flow and Application of Mechanical Wave

作　　者：王刚志[1] 

机构地区：[1]天津科技大学理学院,天津300222

出　　处：《安庆师范学院学报（自然科学版）》2004年第1期44-45,共2页Journal of Anqing Teachers College(Natural Science Edition)

摘　　要：物体中机械能密度随时间变化时,伴随着机械能的传递,存在机械能流。运用机械能流理论,可获得物体内机械能空间转移及应力状态的全部信息。通过对连续媒介中机械能转移的动力学分析,导出机械能流密度矢量S,并讨论了机械波中的机械能流。Following with mechanical energy transmission in medium, mechanical energy flow will be produced when the density of mechanical energy varies with time. With the theory of mechanical energy flow, all information about mechanical energy space transfer and state of stress can be obtained. The paper presents vector S of the density of mechanical energy flow through dynamic analysis to mechanical energy translation in continuous medium. Mechanical energy flow in mechanical wave is also discussed.

关 键 词：机械波 机械能流 能流密度矢量 

分 类 号：O414.14[理学—理论物理]