Dynamic Analysis of Car Ingress/egress Movement: an Experimental Protocol and Preliminary Results

Document Number: 2009-01-2309

Date Published: June 2009

Author(s):
Julien Causse - INRETS/Peugeot Citroen Automobiles SA
Elodie Chateauroux - INRETS
Gilles Monnier - INRETS
Xuguang Wang - INRETS
Lisa Denninger - Peugeot Citroen Automobiles SA

Abstract:
This paper focuses on full body dynamical analysis of car ingress/egress motion. It aims at proposing an experimental protocol adapted for analyzing joint loads using inverse dynamics. Two preliminary studies were first performed in order to 1/ define the main driver/car interactions so as to allow measuring the contact forces at all possible contact zones and 2/ identify the design parameters that mainly influence the discomfort.

In order to verify the feasibility of the protocol, a laboratory study was carried out, during which two subjects tested two car configurations. The experimental equipment was composed of a variable car mock-up, an optoelectronic motion tracking system, two 6D-force plates installed on the ground next to the doorframe and on the car floor, a 6D-Force sensor between the steering wheel and the steering column, and two pressure maps on the seat. Motions were reconstructed from measured surface markers trajectories using inverse kinematics. Joint loads were calculated by an inverse dynamic approach using a recursive Newton-Euler procedure.

The validation of the computing method and the relevance of a dynamic approach are also discussed.

File Size: 780K
Product Status: In Stock

Included in: V118-6

See other papers presented at Digital Human Modeling for Design and Engineering Conference and Exhibition, June 2009, Gothenburg, SWEDE, Session: Posture and Comfort

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