Technical Paper
Development of an Impact Pendulum for Use in Collinear, Low-Velocity Front-to-Rear Crash Tests
2006-04-03
2006-01-1401
The costs of low-velocity, front-to-rear crash tests include the bullet (striking) and target (struck) cars. Analyses of this type of tests led us to conclude that it may be technically feasible and economically advantageous to replace the bullet car with a simplified mechanical device. A bifilar pendulum with an impact face consisting of a mass-spring-damper system was designed to simulate the bullet car in car-to-car, collinear, low-velocity (delta-v <= 8 km/h) front-to-rear tests. The elements of the pendulum face were evaluated dynamically and quasi-statically. Also, car-to-car tests were initially performed with stationary target cars (brakes off). Repair or replacement of the minor damage observed in the cars was accomplished as needed. Tests were subsequently performed with the pendulum striking the same target cars and approximating the bullet cars' impact energies. The pendulum, bullet, and target cars were instrumented with translational acceleration and velocity sensors.