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A Study on Crash Analysis of Vehicle and Guardrail using a LS-DYNA Program
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 Title & Authors
A Study on Crash Analysis of Vehicle and Guardrail using a LS-DYNA Program
Kwon, O-Hyun; Baek, Se-Ryong; Yoon, Jun-Kyu; Lim, Jong-Han;
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A study is to research crash barriers for vehicles that prevent road breakaway of vehicles and protect car passengers and pedestrians as absorbing impulse. Protection performance tests on vehicle passengers were simulated by using a LS-DYNA program. Through repetitive simulation on various speed and angles, passenger protection performance according to different impact condition was contemplated. Variable setting for the simulation was calculated as the mean weight of domestic car sales. By analyzing NASS (National Automotive Sampling System) of NHTSA (National Highway Traffic Safety Administration) of the U.S., the actual speed and collision angle section of accidents were computed. As a result, we confirmed that THIV (Theoretical Head Impact Velocity) and PHD (Post-impact Head Deceleration) are increased according to the impact speed and angle. Also, when the vehicle hit the guardrail post, we could be confirmed that the passenger protection performance greatly decreased.
Guardrail;LS-DYNA;THIV (Theoretical Head Impact Velocity);PHD (Post-impact Head Deceleration);
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