Dynamic Response of Plates Due to Moving Vehicles Using Finite Strip Method
-
摘要: 提出了一个模拟移动车辆和矩形板相互作用的板-车条.用板-车条模拟直接与车辆相接触的板条部分;用传统的板有限条模拟未直接受车辆作用的板条部分.分析中,每辆车理想化为一个具有上、下部质量块,由弹簧和阻尼器连接的单足动力系统.计算示例表明,用该方法分析得到的结果与已有结果很吻合.Abstract: Dynamic response of beam-like structures to moving vehicles has been extensively studied.However,the study on dynamic response of plates to moving vehicles has so far received but scant attention.A plate-vehicle strip for simulating the interaction between a rectangular plate and moving vehicles was described.For the portion of strips that are in direct contact with the moving vehicles,the plate-vehicle strips were empolyed.Conventional plate finite strips were used to model the portion of strips that are not directly under the action of moving vehicles.In the analysis,each moving vehicle is idealized as a one-foot dynamic system with the unsprung mass and sprund mass interconnected by a spring and a dashpot.The numerical results obtained from the proposed method agree well with available results.
-
Key words:
- plate /
- moving vehicle /
- dynamic response /
- finite strip mthod
-
[1] Wu J S,Lee M L,Lai T S.The dynamic analysis of a flat plate under a moving load by the finite element method[J].International Journal for Numerical Methods in Engineering,1987,24(4):743-762. [2] Taheri M R,Ting E C.Dynamic response of plate to moving loads:finite element method[J].Computers & Structures,1990,34(3):509-521. [3] Yener M,Chompooming K.Numerical method of lines for analysis of vehicle-bridge dynamic interaction[J].Computers & Structures,1994,53(5):709-726. [4] Humar J L,Kashif A H.Dynamic response analysis of slab-type bridges[J].Journal of Structural Engineering,1995,121(1):48-62. [5] Taheri M R,Ting E C.Dynamic response of plate to moving loads:structural impedance method[J].Computers & Structures,1989,33(6):1379-1393. [6] Zheng D Y.Vibration and stability analysis of plate-type structures under moving loads by analytical and numerical methods[D].Ph D Thesis.Hong Kong:The University of Hong Kong,1999. [7] Cheung Y K,Tham L G.Finite Strip Method[M].Boca Raton:CRC Press,1998. [8] Au F T K,Zheng D Y,Cheung Y K.Vibration and stability of nonuniform beams with abrupt changes of cross-section by using C1 modified beam vibration functions[J].Applied Mathematical Modelling,1999,23(1):19-34. [9] Cheng Y S.Vibration analysis of bridges under moving vehicles and trains[D].Ph D Thesis.Hong Kong:The University of Hong Kong,2000.
计量
- 文章访问数: 2362
- HTML全文浏览量: 125
- PDF下载量: 606
- 被引次数: 0