Design of Front Structure of current vehicle for Pedestrian Headform Protection

Paper #:
  • 2017-01-1298

  • 2017-03-28
Vehicle Hood being the face of a passenger car poses a challenge to meet the regulatory and aesthetic requirements. However, the urge to make a saleable product makes aesthetics a primary condition. This eventually makes the role of structure optimization much more important. A recent development in the Indian automotive industry, which is known for dynamics of cost competitive cars, has posed the challenge to make passenger cars meeting the regulation and having optimized cost. This work is application of structure optimization of Hood and design of peripheral parts for meeting pedestrian protection performance keeping the focus on having cost-effective solution. This paper discusses Headform compliance of the work done on one of the flagship model of Maruti Suzuki India Ltd., providing detailed analysis of the procedure followed from introduction stage of regulatory requirement in the project to final validation of the engineering intent. This paper serves to present the development of in-house methodology considering the dual perspective of meeting engineering design and vehicle testing. This paper discusses the impact of major challenges, such as limitations with usage of common platform, aesthetics of Hood, height of hood and layout of safety devices present below the hood, on design of hood for meeting pedestrian compliance. The paper presents the work done by a CFT comprising members from vehicle design, vehicle testing and CAE. The challenges become further difficult because of limited time available. The paper unfolds the strategies used to reduce injury criteria: change in hood assembly structure (except outer panel), layout of surrounding parts design of frontal structure, design of new hood hinge and design change of safety device such as hood switch. In addition to this, many proposals have been discussed in the paper to make a cost efficient yet qualitative passenger car.
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