Implementation of Rollover Test in Indonesia, Based on UN ECE-R66 Regulation
Yogi Adi Wijaya, Listiawan Agus Susanto, Stefan Arman
CV. Laksana
Abstract
Bus transportation is the largest mass transportation in Indonesia. But, that-s contrary to the low safety aspect, especially in rollover accident which is most dangerous accident and caused the most fatalities. Based on the number of rollover accident in Indonesia from 2015 – 2018, an average of 10 - 15 people died, and 30 people injury from this accident. So, that makes Laksana is commitment to the safety aspect by developing the rollover computational simulation and rollover actual testing. The bus rollover test, refer to UN ECE-R66 regulation which has been used in Europe and most countries in the world. This regulation also has not even been implemented in Indonesia, so Laksana is a pioneer bus industry in adopting this regulation for evaluating our bus design, increasing the safety aspect, and expanding the export market. The type of UN ECE-R66 testing that we used in this study are full bus rollover simulation using Finite Element Analysis, and the section bus rollover test (as the validation from FEA simulation). FEA simulation for rollover crash, used a 12 m coach bus design with full condition of 35 passengers. Then, the bus is rotated at a slope of 36 degrees and tilted at height of 800 mm from the ground. The results of Laksana bus simulation are successful with side frame and roof component didn-t touch the residual space, during the rollover process. This simulation results have also been validated by evaluating the energy balance graph and compared to the energy calculation from UN ECE-R66 regulation. The energy difference between calculation and FEA simulation is 9.007 %. Laksana also using the another validation method using section bus rollover test, with the front section model of the coach bus that had been previously simulated. Before testing, Laksana evaluated the mass and rollover angle at the maximum CoG and prepared a FEA simulation of bus front section for additional validation. The results of the actual bus section testing are successful, and better than the bus front section FEA simulation.
Keywords: Laksana, rollover test, safety aspect, UN ECE R-66, FEA simulation, section test
Topic: EV Body, Chassis, and Platform