FINITE ELEMENT SIMULATION OF MECHANICAL BUMP SHOCK ABSORBER FOR SLED TESTS

JIMENEZ, M.; MARTINEZ, J.; FIGUEROA, U.; GUEVARA, A.

doi:2015.16.1.167

International Journal of Automotive Technology > Volume 16(1); 2015 > Article

Other Fields of Automotive Engineering

International Journal of Automotive Technology 2015;16(1): 167-172.
doi: https://doi.org/10.1007/s12239-015-0018-1

FINITE ELEMENT SIMULATION OF MECHANICAL BUMP SHOCK ABSORBER FOR SLED TESTS

M. JIMENEZ¹, J. MARTINEZ², U. FIGUEROA³, A. GUEVARA³

¹Volkswagen de Mexico
²Instituto Politecnico Nacional
³Tecnologico de Monterrey

ABSTRACT

It has been observed that during sled tests with hydraulic decelerators, a non-programmed deceleration is generated from the rod inertia. This behavior is observed during the first contact, when the platform impacts the decelerator. This non-programed deceleration usually influences the development of the test, as it modifies the deceleration pulse, reaching levels high enough to activate the airbag pyrotechnics. To overcome the rod

Key Words: Sled test, Nonlinear simulation, Hydraulic decelerator, Bump shock absorber, Deformation energy

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