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Steady state response of an infinite beam on a viscoelastic foundation with moving distributed mass and load
Zhang Y(张吟)1,2
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
2020-04-03
Volume63Issue:8Pages:15
ISSN1674-7348
Abstract

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.

Keywordsteady state beam viscoelastic foundation moving distributed mass
DOI10.1007/s11433-019-1513-5
Indexed BySCI ; EI
Language英语
WOS IDWOS:000526942700001
WOS KeywordHIGH-SPEED RAILWAY ; TENSIONLESS FOUNDATION ; VIBRATION ANALYSIS ; DYNAMIC STABILITY ; TIMOSHENKO BEAM ; RAILROAD TRACK ; HALF-SPACE ; MODEL ; DISPLACEMENTS ; CONTACT
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding ProjectNational 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]
Funding OrganizationNational Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Key Research and Development Program of China
Classification一类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81901
Collection非线性力学国家重点实验室
Corresponding AuthorZhang Y(张吟)
Affiliation1.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
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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