摘要
从结构噪声的观点 ,对在集中力作用下的损伤梁进行了振动功率流研究 ,损伤部位模拟为转动弹簧 ,利用断裂力学的有关理论得到其转动刚度。分析了损伤梁的弯曲波运动以及振动功率流的输入和传播 ,结果表明振动功率流与损伤位置及其特征尺寸是相关联的 。
In the view of structure-borne sound, the vibration power flow analysis is investigated for damaged beam structure loaded by point force. In this paper, the damage is modeled as a local rotational spring and its stiffness is deduced by using fracture mechanics. The motion of bending wave and the vibrational power flow are researched. It is shown that the power flow is relative with the position and the characteristic size of the damage.
出处
《武汉造船》
2000年第5期1-4,共4页
Wuhan Shipbuilding
基金
湖北省自然科学基金
上海交通大学海洋工程国家重点实验室开放基金资助项目
