摘要
本文研究了均匀各向同性的线弹性半空间在运动的集中荷载(竖向的或水平的)作用下所引起的暂态位移。荷载是突加于半空间表面上的,然后以常速度沿着半空间表面上的一条直线穿行。本文得出了半空间内部及表面位移的精确解。考虑了荷载速度为零的极限情况,这就产生了集中荷载的兰姆问题之结果。求解方法不同于已有文献中的方法,其结果也是已有结果的扩充。
The transient displacements in a homogeneous, isotropic, linearly elastichalf space excited by a traveling point load (normal or tangential) areinvestigated. The Load is suddenly applied and then it moves rectilinealy ata constant speed along the free surface. The exact solutions of the displace-ments are derived for the surface and the interior of the half space and forall load speeds. The limit case of zero load speed is considered, yielding theresults for Lamb's point load problem. The method of the resolution isdifferent from the known references, The results in this paper are also theextension of known results.
出处
《交通科学与工程》
1991年第1期1-16,共16页
Journal of Transport Science and Engineering
关键词
兰姆问题
运动荷载
弹性半空间
位移
精确解
elastic half space
moving load
Lamb's problem
displacement
exact solution
