On the wave propagation in a beam-string model subjected to a moving harmonic excitation
作者: Soumyajit RoyG. ChakrabortyAnirvan DasGupta
作者单位: 1Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
刊名: International Journal of Solids and Structures, 2018
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijsolstr.2018.12.016
关键词: Beam-stringMoving loadWave propagation
原始语种摘要: Abstract(#br)The vibration of an infinitely long beam with a large axial tension under a point harmonic load moving at a uniform speed is studied to find out the importance of bending rigidity of the beam. It is found analytically that the effect of bending stiffness of the beam does not play any significant role in the dynamics of the continuum beyond a certain distance away from the point of application of the load. The beam-string system simply acts as a taut string in those regions. However, the bending of the beam-string plays a major part in the vicinity of the load. It is shown that the beam model neglecting the inertia term is sufficient to capture the real scenario with negligible error in the close proximity of the load. The string model also becomes insufficient, especially at...
全文获取路径: Elsevier  (合作)

  • moving 移动
  • string 细绳
  • harmonic 谐波
  • propagation 传播
  • model 模型
  • bending 弯曲
  • point 
  • propagating 传递
  • analytically 分析上
  • speed 速率