FURTHER SIMPLIFICATION OF BUS ROLLLOVER SIMULATION FOR OPTIMIZATION OF PASSENGER HEAD INJURY PREDICTION
Based on data from Badan Pusat Statistik (BPS), the number of buses in Indonesia has increased from 196,309 units in 2015 to 233,261 units in 2020. Based on the data of bus accident investigation conducted by the National Highway Traffic Safety Administration, about 61% of deaths in bus accidents ar...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/74279 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Based on data from Badan Pusat Statistik (BPS), the number of buses in Indonesia has increased from 196,309 units in 2015 to 233,261 units in 2020. Based on the data of bus accident investigation conducted by the National Highway Traffic Safety Administration, about 61% of deaths in bus accidents are caused by bus accidents with rollover mode. To ensure that the bus structure can protect passengers in the case of an accident, it is necessary to test the bus structure design. One of the regulations governing bus rollover tests is the United Nations Economic Commission for Europe Regulation No. 66 (UN ECE R66). Research on the potential injuries experienced by passengers in the case of a bus rollover accident using a simplified model has been conducted previously. However, the head injury value calculated based on the HIC15 value of the rigid beam model in the previous study is still inaccurate and there is an error of 50.56% against the reference model so further research needs to be done.
In this study, the model was developed by replacing the beam element with a special shell element on the bus wall that interacts with the dummy. There are three development models with different shell rod lengths and materials. From the simulation results using LS-DYNA and then analysed the HIC15 value, the alternative model 1 can predict the HIC15 value better than the rigid beam model. Alternative model 1 can reduce the error by 67.81% and has a relatively short computation time of 2 hours 6 minutes.
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