VIBRATION OF BEAMS WITH TWO NON-OVERLAPPING DELAMINATIONS UNDER AXIAL COMPRESSIVE LOADING

摘要：

The free vibration of a homogeneous beam with two non-overlapping delaminations under axial compressive loading has been studied using the Euler-Bernoulli beam theory. The constrained mode and the free mode assumption in the study of delamination buckling and vibration were proposed. For both the constrained mode and the free mode,the fundamental frequency decreases with the increase of the axial compressive loading. In the constrained mode,the fundamental frequency is the lowest when the delamination is located at the mid-plane. In both modes,beams with longer delamination length have lower fundamental frequency than beams with shorter delamination length. However,a beam in the constrained mode has higher fundamental frequency than a beam in the free mode. The fundamental frequency of the beam decreases as the delamination moves from the centre towards the end of the beam. The square of the primary frequency has a linear relationship with the compressive load normalized by the buckling load of the delaminated beam.

关键词： Laminates Delamination Vibration Axial compression

作者: Dong-Wei Shu

作者单位: School of Mechanical and Aerospace Engineering,Hanyang Technological University,Singapore 639798,P.R.China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 283-287

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）