Steady state response of an infinite beam on a viscoelastic foundation with moving distributed mass and load | |
Zhang Y(张吟)1,2 | |
刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY |
2020-04-03 | |
卷号 | 63期号:8页码:15 |
关键词 | steady state beam viscoelastic foundation moving distributed mass |
ISSN号 | 1674-7348 |
DOI | 10.1007/s11433-019-1513-5 |
英文摘要 | Compared with the moving concentrated load model, it is more realistic and proper to use the moving distributed mass and load model to simulate the dynamics of a train moving along a railway track. In the problem of a moving concentrated load, there is only one critical velocity, which divides the load moving velocity into two categories: subcritical and supercritical. The locus of a concentrated load demarcates the space into two parts: the waves in these two domains are called the front and rear waves, respectively. In comparison, in the problem of moving distributed mass and load, there are two critical velocities, which results in three categories of the distributed mass moving velocity. Due to the presence of the distributed mass and load, the space is divided into three domains, in which three different waves exist. Much richer and different variation patterns of wave shapes arise in the problem of the moving distributed mass and load. The mechanisms responsible for these variation patterns are systematically studied. A semi-analytical solution to the steady-state is also obtained, which recovers that of the classical problem of a moving concentrated load when the length of the distributed mass and load approaches zero. |
分类号 | 一类 |
资助项目 | National Natural Science Foundation of China[11772335] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB22020201] ; National Key Research and Development Program of China[2016YFB1200602-09] ; National Key Research and Development Program of China[2016YFB1200602-10] |
WOS关键词 | HIGH-SPEED RAILWAY ; TENSIONLESS FOUNDATION ; VIBRATION ANALYSIS ; DYNAMIC STABILITY ; TIMOSHENKO BEAM ; RAILROAD TRACK ; HALF-SPACE ; MODEL ; DISPLACEMENTS ; CONTACT |
WOS研究方向 | Physics |
语种 | 英语 |
WOS记录号 | WOS:000526942700001 |
资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/81900] |
专题 | 力学研究所_非线性力学国家重点实验室 |
通讯作者 | Zhang Y(张吟) |
作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang Y. Steady state response of an infinite beam on a viscoelastic foundation with moving distributed mass and load[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2020,63(8):15. |
APA | Zhang Y.(2020).Steady state response of an infinite beam on a viscoelastic foundation with moving distributed mass and load.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,63(8),15. |
MLA | Zhang Y."Steady state response of an infinite beam on a viscoelastic foundation with moving distributed mass and load".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 63.8(2020):15. |
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