Collision Analysis of Protection Frame for Height Limit and Over-High Trucks

Abstract:

Collisions between over-high trucks and protection frame for height limit happen frequently, which seriously destroyed the railway infrastructure and affected the road traffic safety. Based on nonlinear software ANSYS/LS-DYNA, the collision process of over-high trucks and protection frame is simulated, and the failure mechanism of protection frame is analyzed respectively from deformation, stress, load etc. Load analysis results indicate that the maximum impact force is approximately direct proportional to the initial velocity, which can be used for choosing the collision load in the design. Stress analysis results indicate that the maximum stress usually occurs in the protection frame crossbar and joint area. Adding the diagonal bracing or increasing the crossbar thickness are the effective methods to improve the impact resistance capability of the protection frame.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 1967-1972
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.1967
• Online since: February 2011
• Authors: Jin Tian Wang, Shu Ying Qu, Xing Min Hou, Ao Tian Ju
• Keywords: ANSYS/LS-DNYA, Collision, Dynamic Response, Numerical Simulation, Protection Frame for Height Limit

References

[1] Railway Transport Safety Protection Ordinance [s], 2005, 4.

[2] LIAO Qihong, HUANG Hongcheng, XUE Liang. On Material Model for Thin-walled Sheet Metal Crashworthiness Simulation [J]. Machine Design and Research, 2001, 17(4): 64-66.

[3] SHI Hongxing, BAI Shufeng, LU Weimin. Crash Force Model of Car to Concrete Barrie [J], Journal of Highway and Transportation Research and Development, 2002, (2): 10-12.

[4] LU Xinzheng, ZHANG Yansheng, YE Lieping, HE Shuitao. Failure Modes and Load Calculation of Collision Between Over-high Truck and Bridge Superstructure [J]. China Journal of Highway and Transport, 2009, 22(5): 61-66.

[5] WANG Xiang, LIU Youwen, SHEN Qing, NING Xiaoqian. The Simulation of the Dynamic Response of A Reinforced Concrete under Impact Loads [J]. Mechanics in Engineering, 2005, 27(6): 49-53.

[6] JU Jinsan, YANG Weibiao, JIANG Xiugen. Numerical Solution for Impact Load of Elasto-plastic Bar Subjected to Rigid Body Impact [J]. Engineering Mechanics, 2007, 24(6): 49-53.

[7] Melo F J Q, Carneiro J A O, Camanho P P, Tavares C L, Fernandes A A. The simulation of impact loads on beam-type structures using a pseudo-dynamic procedure [J]. Strain, 2004, 40(1): 13~23.

DOI: 10.1111/j.1475-1305.2003.00104.x

[8] JIANG Dezeng, HUANG Xiaoqing, TANG Liqun. Nonlinear Finite Element Analysis of Semi-rigid Guardrail under Impact Loading [J]. Journal of South China University of Technology, 2003, 31(3): 64-67.

[9] LAI Yue. Finite Element Analysis of Impact Between Heavy Vehicle and Semi-rigid Guardrail [D]. Shanghai: Tongji University, (2006).

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