Influence of foundation mass and surface roughness on dynamic response of beam on dynamic foundation subjected to the moving load
[摘要] In this paper, Improved Moving Element Method (IMEM) is used to analyze the dynamic response of Euler-Bernoulli beam structures on the dynamic foundation model subjected to the moving load. The effects of characteristic foundation model parameters such as Winkler stiffness, shear layer based on the Pasternak model, viscoelastic dashpot and characteristic parameter of mass on foundation. Beams are modeled by moving elements while the load is fixed. Based on the principle of the publicly virtual balancing and the theory of moving element method, the motion differential equation of the system is established and solved by means of the numerical integration based on the Newmark algorithm. The influence of mass on foundation and the roughness of the beam surface on the dynamic response of beam are examined in details.
[发布日期] [发布机构] Faculty of Civil Engineering, HUTECH University, Ho Chi Minh City, Viet Nam^1;Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), Vietnam National University HCMC, Viet Nam^2
[效力级别] 运输工程 [学科分类]
[关键词] Dynamic foundations;Euler Bernoulli beams;Foundation modeling;Motion differential equation;Moving element method;Moving load;Numerical integrations;Roughness amplitude [时效性]
