Development of a Legform Impactor with 4-DOF Knee-Joint for Pedestrian Safety Assessment in Omni-Direction Impacts Tsinghua University

Format:

Conference/Event

Author/Creator:

Huang, Huang, author.

Contributor:

Nie, Bingbing

Xia, Yong

Zeng, Long

Zhou, Qing

Conference Name:

SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

The issue of car-to-pedestrian impact safety has received more and more attention. For leg protection, a legform impactor with 2 degrees-of-freedom (DOF) proposed by EEVC is required in current regulations for injury assessment, and the Japan Automobile Manufacturers Association Incorporated (JAMA) and Japan Automobile Research Institute (JARI) have developed a more biofidelic pedestrian legform since 2000. However, studies show that those existing legforms may not be able to cover some car-to-pedestrian impact situations. This paper documents the development of a new pedestrian legform with 4 DOFs at the knee-joint. It can better represent the kinematics characteristics of human knee-joint, especially under loading conditions in omni-direction impacts. The design challenge is to solve the packaging problem, including design of the knee-joint mechanisms and layout of all the sensors in a limited space of the legform. Furthermore, reusable elements are used to achieve the joint stiffness requirements instead of destructive elements used in the EEVC 2-DOF legform. A prototype of the 4-DOF legform has been manufactured based on the design. The preliminary impact tests against bumper systems are also introduced in this paper

Notes:

Vendor supplied data

Publisher Number:

2011-01-0085

Access Restriction:

Restricted for use by site license