EDHIS (Engineering Dynamics Human Impact Simulator)

EDHIS is a 3-D simulation analysis of the response of an occupant during a motor vehicle collision. EDHIS is based on the HSRI-3D model developed at the University of Michigan Transportation Research Institute, and includes several enhancements provided by Engineering Dynamics Corporation. The program computes human kinematics (position/velocity/acceleration vs time), joint angles and torques, and contact forces between the human and vehicle. EDHIS is useful for predicting and visualizing occupant motion during impact. The program also provides injury predictions, including HIC, Chest SI and Maximum Femur Load.

EDHIS employs belt (torso and lap) models useful for studying issues related to restraints system design and usage.

EDHIS is a 12 degree-of-freedom analysis, dividing the body into three masses (head, torso and lower extremities) and 2 joints (neck and hips). The body is visualized using the HVE 15-segment /14-joint human model by combining the head and neck segments to form the head; the pelvis, abdomen and chest segments are combined to form the torso; the right and left upper legs, lower legs and feet are combined to form the lower extremities.