Dynamic response in multilayered viscoelastic medium generated by moving distributed loads

被引：0
作者：
Li, Hao-Yu [1 ]
Yang, Shao-Pu [1 ]
Liu, Jin [1 ]
Si, Chun-Di [1 ]
机构：
[1] Mechanics Engineering Department, Shijiazhuang Tiedao University, Shijiazhuang
来源：
Gongcheng Lixue/Engineering Mechanics | 2015年 / 32卷 / 01期
关键词：
Dynamic response; Green's function; Integral transform; Multilayered viscoelastic medium; Pavement;
D O I：
10.6052/j.issn.1000-4750.2013.07.0688
中图分类号：
学科分类号：
摘要：
A multilayered viscoelastic medium is established by modeling the asphalt surface course as viscoelastic Burgers constitutive relation. The analytical solutions of dynamic responses in multilayered viscoelastic medium under moving distributed loads are derived by combining the integral transform and transfer matrix method with the generalized Duhamel integral. The spline interpolation numerical algorithm is used to calculate the multiple integrals of singular and oscillatory functions, which transfers the solutions from the wavenumber-frequency domain to the time-space domain. The numerical results are compared with the existing data available in literature and those obtained from ANSYS finite element analysis, and excellent agreement has been observed. The vibration characteristics of the multilayered viscoelastic medium under moving distributed loads are then analyzed through case studies. The results show that viscoelastic solutions are greater than elastic solutions, and Burgers model can reflect the delayed pavement deformation. The vertical displacements of multilayered viscoelastic medium decrease as the vehicle moving speed and Burgers material parameters increase. ©, 2015, Tsinghua University. All right reserved.
引用
收藏
页码：120 / 127
页数：7
相关论文
共 17 条
  • [1] Beskou N.D., Theodorakopoulos D.D., Dynamic effects of moving loads on road pavements: A review, Soil Dynamics and Earthquake Engineering, 31, 4, pp. 547-567, (2011)
  • [2] Kim S.M., Influence of horizontal resistance at plate bottom on vibration of plates on elastic foundation under moving loads, Engineering Structure, 26, 4, pp. 519-529, (2004)
  • [3] Sun L., Steady-state dynamic response of a Kirchhoff's slab on viscoelastic Kelvin's foundation to moving harmonic Loads, Journal of Applied Mechanics, 74, 6, pp. 1212-1224, (2007)
  • [4] Yang S.P., Li S.H., Lu Y.J., Investigation on dynamic interaction between a heavy vehicle and road pavement, Vehicle System Dynamics, 48, 8, pp. 923-944, (2010)
  • [5] Li H., Yang S., Qi Y., Xu B., Dynamics of asphalt pavement under moving stochastic loads and parameter analysis, Engineering Mechanics, 28, 11, pp. 159-165, (2011)
  • [6] Zhou H., Jiang J., Dynamic response of rigid pavements to moving vehicles, China Civil Engineering Journal, 39, 8, pp. 117-125, (2006)
  • [7] Hung H.H., Yang Y.B., Elasitc waves in visco-elastic half-space generated by various vehicle loads, Solid Dynamics and Earthquake Engineering, 21, 1, pp. 1-17, (2001)
  • [8] Cai Y.Q., Cao Z.G., Sun H.L., Et al., Dynamic response of pavements on poroelastic half-space soil medium to a moving traffic load, Computers and Geotechnics, 36, 1-2, pp. 52-60, (2009)
  • [9] Cao Z.G., Bostrom A., Dynamic response of a poroelastic half-space to accelerating or decelerating trains, Journal of Sound and Vibration, 332, 11, pp. 2777-2794, (2013)
  • [10] Liang R., Zeng S.P., Efficient dynamic analysis of multilayered system during falling weight deflectometer experiments, Journal of Transportation Engineering, 128, 4, pp. 366-374, (2002)
12