Affine full network model for strain-induced crystallization in rubbery polymers

2017-10-13
Nateghi, Aref
Dal, Hüsnü
Keip, Marc Andre
Miehe, Christian
We propose a micro-mechanically motivated material model for strain-induced crystallization in rubbers. Our point of departure is constructing a micro-mechanical model for a single crystallizing polymer chain. A thermodynamically consistent evolution law describing the kinetics of crystallization in the chain level is then proposed. The chain model is incorporated into the affine full network model. Finally, the numerical performance of the model is compared to the experimental data
Proceedings of the 7th GACM Colloquium on Computational Mechanics for Young Scientists from Academia and Industry (2017)

Suggestions

Polybenzimidazole-modified carbon nanotubes as a support material for platinum-based high-temperature proton exchange membrane fuel cell electrocatalysts
Eren, Enis Oguzhan; Özkan, Necati; DEVRİM, YILSER (2021-08-01)
We fabricate polybenzimidazole (PBI) wrapped carbon nanotubes (MWCNTs) as support material for platinum-based fuel cell electrocatalyst. With the aid of microwave-assisted polyol reduction, we obtain very fine platinum (Pt) nanoparticles on PBI/MWCNT support while reducing the amount of Pt waste during synthesis. Cyclic voltammetry (CV) concludes that Pt-PBI/MWCNT has 43.0 m(2) g(-1) of electrochemically active surface area (ECSA) to catalyze hydrogen oxidation. Furthermore, after the 1000th cycle, Pt-PBI/M...
Associative behaviour and effect of functional groups on the fluorescence of graphene oxide
Ozcan, Sefika; Vempati, Sesha; Çırpan, Ali; Uyar, Tamer (Royal Society of Chemistry (RSC), 2018-01-01)
We have juxtaposed the structural, vibrational and emission properties of graphene oxide (GO) with various degrees of reduction with and without a model dispersant, unveiling a strong associative behavior between GO sheets and the influence of H-bonds. The interlayer spacings are similar to 0.84 and 0.78 nm for the as prepared and reduced samples. -OH groups are predominantly effected by the photo-thermal reduction. Also we note some regeneration of > C=O and -COOH groups in reduced samples. Clear changes t...
Energy Harvesting Through Lumped Elements Located on Metamaterial Absorber Particles
Gunduz, Ozan T.; Sabah, Cumali (2015-09-09)
We propose and examine an enhanced version of a multi-band metamaterial absorber for an energy harvesting application. The numerical results of the multi-band absorption characteristics of no-load conditions are presented and compared with the loading conditions. At most % 50 of the incoming wave energy whose correspondence is 0.25 Watt is converted to real power at the resistive loads at 5.88 GHz by the usage of 2000 ohms loads. In order to evaluate the harvesting efficiency, three different types of effic...
Plasmonic metal-insulator-metal structures for interaction with erbium in amorphous silicon nitride
Gong, Yiyang; Yerci, Selçuk; Negro, Luca Dal; Vučković, Jelena (2009-01-01)
We propose to use plasmonic modes in periodically patterned metal-insulator-metal structures to enhance emission from Erbium doped Silicon Nitride. Enhancement of emission up to a factor of 2.3 is experimentally demonstrated.
Adsorption of RuSex (x=1-5) cluster on Se-doped graphene: First principle calculations
AKTÜRK, OLCAY ÜZENGİ; Tomak, Mehmet (2015-08-30)
We have investigated the adsorption of RuSex (x =1-5) cluster on Se-doped graphene. The change of the adsorption energy with the number of Se atoms and magnetization values are investigated. Electronic properties of adsorption of RuSex (x =1-5) cluster on Se-doped graphene are investigated. The highest adsorption energy belongs to RuSe adsorbate. The biggest magnetization value belongs to RuSe2 adsorbate. This adsorbate makes the substrate half metallic. This property is important in electronic device appli...
Citation Formats
A. Nateghi, H. Dal, M. A. Keip, and C. Miehe, “Affine full network model for strain-induced crystallization in rubbery polymers,” presented at the Proceedings of the 7th GACM Colloquium on Computational Mechanics for Young Scientists from Academia and Industry (2017), Stuttgart, Germany, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84180.