Integrating the Results of Sheet Forming Simulation in Crashworthiness

Document Number: 2003-01-3742

Date Published: November 2003

Author(s):
Jorge Paiva Abrantes - T-Systems do Brasil Ltda.
Marco Antonio Argentino - T-Systems do Brasil Ltda.
Antonio Carlos da Costa Con\acalves - DaimlerChrysler do Brasil Ltda.
Jos\ae C\aassio Mezzetti Correa - DaimlerChrysler do Brasil Ltda.

Abstract:
The main truck cabin or car body parts needs a precise design due to its importance to occupant safety. In the last years and in the present these parts are commonly designed using sheet material nominal properties and the influence of the forming process (thickness reduction, plastic strain and residual stress) was not taken in account. This procedure hid some spurious answers of the structures and sacrificed in some cases the vehicle safety. Other consequences are a bigger cost of test of prototypes and delays in the launching of new products. To minimize this problem, it becomes necessary to introduce the effect of the forming process in the structural sizing and the analyses of the occupant safety (Crashworthiness) of new cabins and body cars. It is also known that the Sheet Forming Simulation reached precision and trustworthiness enough to supply the geometric and material changes to Crashworthiness analysis.

Thus the present work will describe the supply and integration of the forming effects in the Crashworthiness analysis of a vital part of a truck cabin. The differences gotten in the Crashworthiness analysis in the mentioned part is described and commented on. Finally the difficulties, limitations and future improvements for the frequent use in wide scale are commented on.

File Size: 2237K
Product Status: In Stock

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