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Investigation into the influence of the Mullins effect on the dynamic behavior of hybrid laminates

Jackstadt, Alexander ORCID iD icon 1,2; Frölich, Felix ORCID iD icon 2; Liebig, Wilfried V. ORCID iD icon 1; Kärger, Luise 2; Weidenmann, Kay A.
1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)
2 Institut für Fahrzeugsystemtechnik (FAST), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

The benefits of fiber metal laminates have been widely studied and exploited in numerous applications. However, due to their high stiffness and low weight, these laminates can exhibit an undesirable dynamic behavior when subjected to vibrations. To overcome this, hybrid laminates containing an elastomeric damping layer, such as hybrid carbon fiber reinforced polymer elastomer metal laminates (HyCEML) have been developed and found to significantly improve the dynamic behavior of such laminates as shown by Sessner et al. [1]. The key mechanism behind this high damping capability is commonly referred to as constrained-layer damping, first published by Kerwin [2]. In constrained-layer damping laminates, the elastomer layers undergo large deformations due to their comparably low stiffness. This motivates the consideration of large strain phenomena commonly found in elastomers even when global laminate deformations are small, as in linear dynamic analysis. This work specifically addresses the cyclic softening of elastomers, commonly known as Mullins effect [3]. The study aims at the experimental characterization of said Mullins effect and its constitutive modeling in order to elaborate its influence on the constrained-layer damping mechanism. ... mehr


Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Vortrag
Publikationsdatum 07.07.2022
Sprache Englisch
Identifikator KITopen-ID: 1000148762
Veranstaltung 11th European Solid Mechanics Conference (2022), Galway, Irland, 04.07.2022 – 08.07.2022
Projektinformation SPP 1897 (DFG, DFG KOORD, KA 4224/3-2)
SPP 1897 (DFG, DFG KOORD, WE 4273/16-2)
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