Investigation of the Effect of Carbonyl Iron Micro-Particles on the Mechanical and Rheological Properties of Isotropic and Anisotropic MREs: Constitutive Magneto-Mechanical Material Model
| Autor: | Cintya G. Soria-Hernández, Alex Elías-Zúñiga, Luis M. Palacios-Pineda, Imperio Anel Perales-Martinez, Oscar Martínez-Romero |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology Elastomer Article Shear modulus lcsh:QD241-441 carbonyl iron particles chemistry.chemical_compound Carbonyl iron 0203 mechanical engineering lcsh:Organic chemistry Ultimate tensile strength Composite material residual strains Polydimethylsiloxane Helmholtz free energy General Chemistry 021001 nanoscience & nanotechnology Magnetorheological elastomer magnetorheological elastomer 020303 mechanical engineering & transports chemistry Magnetorheological fluid stiffness magnetorheological effect 0210 nano-technology Material properties stress softening effect polydimethylsiloxane elastomer |
| Zdroj: | Polymers Volume 11 Issue 10 Polymers, Vol 11, Iss 10, p 1705 (2019) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym11101705 |
| Popis: | This article focuses on evaluating the influence that the addition of carbonyl iron micro-particles (CIPs) and its alignment have on the mechanical and rheological properties for magnetorheological elastomers (MREs) fabricated using polydimethylsiloxane (PDMS) elastomer, and 24 wt % of silicone oil (SO). A solenoid device was designed and built to fabricate the corresponding composite magnetorheological material and to perform uniaxial cyclic tests under uniform magnetic flux density. Furthermore, a constitutive material model that considers both elastic and magnetic effects was introduced to predict stress-softening and permanent set effects experienced by the MRE samples during cyclic loading tests. Moreover, experimental characterizations via Fourier transform infrared (FTIR), X-ray diffraction (XRD), tensile mechanical testing, and rheological tests were performed on the produced MRE samples in order to assess mechanical and rheological material properties such as mechanical strength, material stiffness, Mullins and permanent set effects, damping ratio, stiffness magnetorheological effect (SMR), and relative magnetorheological storage and loss moduli effects. Experimental results and theoretical predictions confirmed that for a CIPs concentration of 70 wt %, the material samples exhibit the highest shear modulus, stress-softening effects, and engineering stress values when the samples are subject to a maximum stretch value of 1.64 and a uniform magnetic flux density of 52.2 mT. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |