1. School of Transportation, Southeast University, Nanjing Jiangsu 210096, China;
2. Department of Civil Engineering, East China Jiao Tong University, Nanchang Jiangxi 330013, China;
3. Department of Architecture and Civil Engineering, E'Dong Institute of Vocation & Technology, Huanggang Hubei 438000, China
Research on Models of a Highway Bridge Subjected to a Moving Vehicle Based on the LS-DYNA Simulator
GUI Shui-rong1,2, LIU Lü2, CHEN Shui-sheng2, ZHAO Hui3
1. School of Transportation, Southeast University, Nanjing Jiangsu 210096, China;
2. Department of Civil Engineering, East China Jiao Tong University, Nanchang Jiangxi 330013, China;
3. Department of Architecture and Civil Engineering, E'Dong Institute of Vocation & Technology, Huanggang Hubei 438000, China
摘要Based on the LS-DYNA program, a vehicle's wheel is simulated by linear elastic material rubber and steel, and internal pressure in all tires is defined. Rotation of vehicle wheel 3D models is simulated through appropriate rotation and cylinder-shape constraints. The dynamic characteristics of the vehicle suspension system are simulated by using spring damper elements combined with dynamic characteristics of the vehicle suspension system. The theoretical quality distribution is well matched with practical systems by adjusting unit size and distribution. A fine finite vehicle element model is established to research the vibration response of vehicle-bridge coupling dynamic response based on a 3-axle heavy vehicle. Comparison of simulated and measured values of vehicle axle load applying natural frequency FEM is performed to verify the validity of the model. Taking a simply supported beam bridge as an example, LS-DYNA finite element software and MATLAB are used to simulate and analyze the mass-spring-damping vibration system, and the bridge vibration response subjected to vehicle load at constant speed is researched comparatively. The results show the feasibility of using a LS-DYNA fine model to analyze vehicle-bridge coupling vibration, but the computational workload is very high for this model.
Abstract：Based on the LS-DYNA program, a vehicle's wheel is simulated by linear elastic material rubber and steel, and internal pressure in all tires is defined. Rotation of vehicle wheel 3D models is simulated through appropriate rotation and cylinder-shape constraints. The dynamic characteristics of the vehicle suspension system are simulated by using spring damper elements combined with dynamic characteristics of the vehicle suspension system. The theoretical quality distribution is well matched with practical systems by adjusting unit size and distribution. A fine finite vehicle element model is established to research the vibration response of vehicle-bridge coupling dynamic response based on a 3-axle heavy vehicle. Comparison of simulated and measured values of vehicle axle load applying natural frequency FEM is performed to verify the validity of the model. Taking a simply supported beam bridge as an example, LS-DYNA finite element software and MATLAB are used to simulate and analyze the mass-spring-damping vibration system, and the bridge vibration response subjected to vehicle load at constant speed is researched comparatively. The results show the feasibility of using a LS-DYNA fine model to analyze vehicle-bridge coupling vibration, but the computational workload is very high for this model.
基金资助:Supported by the National Natural Science Foundation of China (No.50868007);the Project of Natural Science Foundation of Jiangxi Province(No.20114BAB216008);and the Scientific Research Foundation of Education Department of Jiangxi Province of China (No.GJJ14352)
桂水荣, 刘律, 陈水生, 赵辉. 基于LS-DYNA公路桥梁车耦合振动模型[J]. Journal of Highway and Transportation Research and Development, 2014, 8(3): 76-82.
GUI Shui-rong, LIU Lü, CHEN Shui-sheng, ZHAO Hui. Research on Models of a Highway Bridge Subjected to a Moving Vehicle Based on the LS-DYNA Simulator. Journal of Highway and Transportation Research and Development, 2014, 8(3): 76-82.
[1] LI Jun-qiang, LIU Hong-zhao, HE Qin-xiang, et al. A Simple Numerical Calculation for Coupled Vibration Responses of a Vehicle-bridge System[J]. Journal of Applied Mechanics, 2004, 21(2):66-69. (in Chinese)
[2] HENCHI K, FAFARD M, TALBOT M, et al. An Efficient Algorithm for Dynamic Analysis of Bridges Under Moving Vehicles Using a Coupled Modal and Physical Components Approach[J]. Journal of Sound and Vibration, 1998, 212(4):663-683.
[3] SHENG Guo-gang, PENG Xian, LI Chuan-xi. The Dynamic Analysis of Bridge under Moving Vehicles[J]. Journal of Changsha Communications University, 2003, 19(4):10-13. (in Chinese)
[4] BRADY S P, O'BRIEN E J. Effect of Vehicle Velocity on the Dynamic Amplification of Two Vehicles Crossing a Simply Supported Bridge[J]. Journal of Structural Engineering, 2006, 11(2):250-256.
[5] TAN Guo-jin, LIU Han-bing, CHENG Yong-chun, et al. Analysis of Impact of Vehicle to Simply Supported Beam Bridge Based on Vehicle-bridge Coupled Vibration[J]. Journal of Jilin University, Engineering and Technology Edition, 2011, 41(1):62-67. (in Chinese)
[6] GUI Shui-rong, CHEN Shui-sheng. Vehicle-induced Dynamic Response Analysis of T-type Rigid-frame Bridge under a Vehicle Load[J]. Journal of East China Jiaotong University, 2009, 26(4):43-49. (in Chinese)
[7] LI Qi, WU Ding-jun, SHAO Chang-yu. Modeling and Dynamic Analysis Method of Vehicle-bridge Coupling System Considering Car-body Flexibility[J]. Journal of Vibration Engineering, 2011, 24(1):41-47. (in Chinese)
[8] LI Zhi-qiang, ZHAO Long-mao. Computational Simulation to Dynamic Response of Vehicle and Track Coupling System Under Vertical Impact Loading[J]. Chinese Journal of Applied Mechanics, 2007, 24(1):79-82. (in Chinese)
[9] KWASNIEWSKI L, LI H Y, WEKEZER J, et al. Finite Element Analysis of Vehicle-bridge Interaction[J]. Finite Element in Analysis and Design, 2006, 42(11):950-959.
[10] LI Hong-yi. Dynamic Response of Highway Bridges Subjected to Heavy Vehicles[D]. Tallahassee:The Florida State University, 2005.
[11] ZHAO Hui. Vibration Response of Highway Bridges Subjected to Vehicle-bridge Coupled Vibration Based on the LS-DYNA[D]. Nanchang:East China Jiaotong University, 2011. (in Chinese)
[12] GUI Shui-rong, CHEN Shui-sheng, Ren Yong-ming. Research on Influencing Factors of Impact Coefficient of Continuous Beam Bridge Transformed from Simply-supported Structure Subjected to Moving Vehicle Loads[J]. Journal of Highway and Transportation Research and Development, 2011, 28(5):54-60. (in Chinese)
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2014, Vol. 8 
