Analytical Evaluation of the Passenger Safety of the Korean Light Tactical Vehicle in Accordance with ECE R 66 and ECE R
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ght © 2020 KSAE/ 11707 pISSN 12299138/ eISSN 19763832
ANALYTICAL EVALUATION OF THE PASSENGER SAFETY OF THE KOREAN LIGHT TACTICAL VEHICLE IN ACCORDANCE WITH ECE R 66 AND ECE R 29 Kwonhee Suh1) and Hiseak Yoon2)* Military Vehicle Development Team, Kia Motors Corporation, 277 Hwaun-ro, Seo-gu, Gwangju 61909, Korea 2) School of Mechanical Systems Engineering, Chonnam National University, Gwangju 61186, Korea
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(Received 16 May 2019; Revised 12 October 2019; Accepted 9 December 2019) ABSTRACTThe Korean light tactical vehicle (KLTV) is a vehicle with enhanced mobility, versatility, and survivability, in comparison with conventional vehicles. The KLTV is classified as a special vehicle, so there is no standard to evaluate its passenger safety. Therefore, ECE R 66 (rollover test) and ECE R 29 (roof strength test) regulations are selected as criteria for evaluating the passenger safety during rollover. According to the two ECE regulations, finite element (FE) analysis and the evaluation method for examining the safety of passenger and passenger during the rollover of the KLTV are presented. The trimmed body model of the KLTV is constructed using its design data, and five subsystems conforming to test conditions of ECE R 66 and ECE R 29 are modeled. Based on the FE models, rollover analysis and roof strength analysis of the KLTV are carried out. Then, body deformations of the KLTV and the residual margin of the survival space of each passenger are examined. It is found that the body of the KLTV has sufficient rigidity to guarantee the survival spaces of all passengers. This study can provide basic data for securing the passenger safety of a tactical vehicle in the event of rollover. KEY WORDS : Rollover, Roof strength, Tactical vehicle, ECE R 66, ECE R 29
1. INTRODUCTION
actual vehicle test in the ECE regulations. Computational analysis to construct a simulation model that is exactly the same as an actual vehicle is difficult, but it has the advantage of saving cost and time, and enabling parameter studies compared to the actual test (Dumitrache, 2013). So, crash analyses as well as legal simulations related to rollover and collision have been actively studied (Barbat et al., 2007; Park et al., 2010; Ambati et al., 2012; Gutowski et al., 2017). For ECE R 66, studies have been conducted on the development of analytical techniques to replace the rollover test, validation of rollover analysis, design improvement, and optimal design (Anderson, 2000; Lin and Nian, 2006; Valladares et al., 2010; Bojanowski and Kulak, 2011; Srinivasulu, 2012; Elseufy et al., 2013; Gepner et al., 2014; Micu et al., 2014; Rogov and Orlov, 2015). Kwasniewski et al. (2009) described a method of simulating a crash test for paratransit buses in Florida, USA. Sensitivity analysis for reliable analytical models was performed to identify key parameters in the rollover situation. Park and Yoo (2008) proposed a modified beam element model of a large-sized bus, in which a nonlinear spring is inserted to realize local buckling of the joint. Liang and Le
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