Validation of a PC-Crash Multibody Sport Bike Motorcycle Model

Abstract

<div class="section abstract"><div class="htmlview paragraph">PC-Crash is an accident reconstruction program allowing the user to perform simulations with multibody objects that collide or interact with 3D vehicle mesh models. The multibody systems can be a pedestrian, a motorcycle, or a motorcycle with a rider. The multibody systems are comprised of individual rigid bodies connected by joints. The bodies can be of various size and stiffness along with varying coefficients of friction and restitution. Additionally, the joints can be tailored to define pivot types and range of motion. The current motorcycle models in PC-Crash are generic and do not resemble a sport bike type motorcycle. They are only globally scalable such that you cannot adjust length, width, or height independently. However, the user can adjust each body and/or joint individually as needed.</div><div class="htmlview paragraph">A model was created that resembled a modern sport bike motorcycle. In addition, a multibody rider was mounted on the motorcycle in a typical sport bike riding position. The model was validated using the three instrumented tests that were the subject of previous research (SAE 2020-01-0885). The aforementioned tests involved moving motorcycles striking moving cars. Impact configurations involved the classic T-bone type accident, while others were more complex in nature involving significant longitudinal and lateral impact forces to the motorcycle.</div><div class="htmlview paragraph">The test results were compared to parameters calculated in PC-Crash. Results such as Delta-V, yaw rate and overall post impact trajectories of the motorcycle, rider and movement of the target vehicle were compared to the data from the instrumented test vehicles. In total the multibody rider/motorcycle model was able to simulate the three staged crash tests very well. The overall trajectories of both the rider and motorcycle aligned very well with the overall motion seen in the crash test.</div></div>

Establishing the Manner of Death: A 3D Reconstruction of a Case of Hanging

“…The woman probably left this trace while she was knotting the cable to the railing (Figure 5). The Multibody System of the PC-Crash software simulates the interaction of a human body model with 3D objects [29]. Each body part is represented by an ellipsoid with its own mass, moment of inertia, and three dimensions.…”

The Contact Phase in Vehicle–Pedestrian Accident Reconstruction

“…Analyses of real collisions between vehicles and dummies, as well as modeling with especially dedicated software [15][16][17], were carried out for the study of the contact phase between a vehicle and a pedestrian. This should allow specialists to more accurately investigate the circumstances of pedestrian accidents.…”