Analyzing Frontal Car Collisions Through Simulation Utilizing HyperWorks Software
摘要
The car body frame can be considered as the primary protective shield for passenger safety during frontal collisions. This study focuses on the deformation and failure of the front car body frame when colliding with a rigid barrier. The accident scenario is simulated using explicit dynamic Finite Element software. The geometric design of the car body frame is created using HyperWork software and imported into the Finite Element software within HyperCrash, where a rigid block is designed as an absolute rigid barrier. The car body is simulated using two materials, elasto-plastic modeled with the Johnson–Cook Law 2. The study evaluates a collision at a speed of 56 km/h with a rigid barrier, examining the displacement, velocity, stress, deformation, and energy of the Kia Pride. The results show that at the point of impact, the velocity decreases gradually immediately after the collision. The reaction force of the rigid barrier at the impact area reaches 1.2E+07 kN, causing deformation of the car’s front end. The internal energy of the car increases from 0 to approximately 1.75E+08, while the kinetic energy decreases from 2.25+08 to approximately 0. The crush behavior of the car body frame, energy dissipation, and vehicle deceleration from the crash simulation was observed.