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Dissipation in hysteretic rubber mount models

Communication avec acte
Auteur
PENAS, Rafael
7736 PSA Peugeot - Citroën [PSA]
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
GAUDIN, Arnaud
7736 PSA Peugeot - Citroën [PSA]
KREIS, Adrien
7736 PSA Peugeot - Citroën [PSA]
BALMES, Etienne
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
470240 SDTools

URI
http://hdl.handle.net/10985/16599
Date
2019

Résumé

Rubber mounts are elements of extreme importance in automotive suspension, and accurate modeling is crucial for comfort design. While mount characterization is typically done using cycles, actual performance is often associated with transients. The paper thus focuses on the impact of power dissipation on suspension models during transients. For scalar or 0D hysteretic models that respect Madelung rules and Masing’s law, a method is introduced to compute instant dissipation even for models where it is not explicitly available. It is shown that stiffness and dissipation depend only on the last turning point and this dependence should be the core aspect for identifying and modeling hysteretic dissipation. The second section introduces two different 0D models having the same full cycle dissipation and force amplitude, thus the same storage and loss moduli in a first harmonic approximation of the mount behavior, though having different instantaneous dissipation. The case of a transient starting torque soliciting a suspended powertrain is finally considered. The different suspension models are shown to have different instant dissipation which might deeply modify the conclusions drawn from the dynamic simulation.

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  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Documents liés

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  • Hyper-reduced models of hyperelastic dissipative elastomer bushings 
    Communication avec acte
    PENAS, Rafael; GAUDIN, Arnaud; ccBALMES, Etienne (ISMA Editions (Belgium), 2020-09)
    Rubber mount modeling in multibody simulation is crucial for accuracy in this type of calculation, and despite its importance, they are often underestimated in terms of modeling. The present work aims to develop and ...
  • A unified non-linear system model view of hyperelasticity, viscoelasticity and hysteresis exhibited by rubber 
    Article dans une revue avec comité de lecture
    PENAS, Rafael; BALMES, Etienne; GAUDIN, Arnaud (Elsevier BV, 2022-05)
    Rubber modeling is an old subject and so many models exist that it is difficult to have a clear vision of what exists and is more appropriate. Rather than attempting a standard review, this paper proposes classification ...
  • Sensitivity analysis of catenary geometry on current collection quality 
    Communication avec acte
    VO VAN, Olivier; BALMES, Etienne; CAPITAINE, Arnaud; LORANG, Xavier (Civil-Comp Press, 2016)
    A global sensitivity analysis is led on catenary parameters such as dropper lengths, height of the messenger wire at masts and mechanical tensions in the wires thanks to the Sobol indices. All parameters are defined using ...
  • On the solution of the heat equation in very thin tapes 
    Article dans une revue avec comité de lecture
    ccPRULIERE, Etienne; ccCHINESTA SORIA, Francisco; ccAMMAR, Amine; LEYGUE, Adrien; POITOU, Arnaud (Elsevier, 2012)
    This paper addresses two issues usually encountered when simulating thermal processes in forming processes involving tape-type geometries, as is the case of tape or tow placement, surface treatments, / The first issue ...
  • On the solution of the heat equation in very thin tapes 
    Article dans une revue avec comité de lecture
    ccPRULIERE, Etienne; ccCHINESTA SORIA, Francisco; ccAMMAR, Amine; LEYGUE, Adrien; POITOU, Arnaud (Elsevier, 2013)
    This papers addresses two issues usually encountered when simulating thermal processes in forming processes involving tape-type geometries, as is the case of tape or tow placement, surface treatments, ... The first issue ...

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