摘要
悬臂叠合梁在实际工程中应用广泛,因而悬臂叠合梁的动力分析研究很有必要性。本文采用实验模拟悬臂叠合梁在谐荷载和随机荷载作用下的振动情况,并通过对动力响应曲线的研究,分析了叠合梁的动力响应规律,发现在功率谱密度比较大时,一端为自由界面的悬臂叠合梁会出现相互碰撞。进而分别把悬臂叠合梁中间和顶端固定在一起,进行实验,观察动力响应,得到了避免叠合梁碰撞的一种有效措施。
As the cantilever-laminated beam has been very widely used in the engineering, the study for the dynamic analysis of the cantilever-laminated beam is very necessary. In this paper, by analyzing the dynamic response curve from the dynamic response of the cantilever-laminated beam in the harmonic load and random load, this paper discovered that the cantilever-laminated beam with free end interface at the top part will collide when the power spectral density is rela- tively larger than ordinary condition. Besides, by fixing the middle and top of the cantilever-lami- nated beam＇ s with the clamp to observe the dynamic response, this paper have obtained an effective way to avoid the cantilever-laminated beam＇s collision.
出处
《工程与试验》
2008年第4期21-23,35,共4页
Engineering and Test
关键词
悬臂叠合梁
谐荷载
随机荷载
动力响应
the Cantilever-Laminated Beam
the harmonic load
the random load
dynamic response
