Thermomechanical modeling of polymer nanocomposites by the asymptotic homogenization method

Shabana, Yasser M.; Wang, Gong‐Tao

doi:10.1007/s00707-013-0868-4

Cited by 25 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unit cell method works as a widely‐used representative volume element method, and it is extensively applied to investigate possible deformation mechanisms for composites. As the literatures reported, it works excellently in investigating mechanical mechanisms of composites, like the potential mechanisms for Mullins effect of rubber‐matrix composites, metal‐matrix composites, thermo‐mechanic characteristics of nanocomposites and particle reinforcement dependence for epoxy . Thereby, two‐dimension unit cell modeling is introduced to investigate deformation mechanism of strain hardening ratio for TPU.…”

Section: Resultsmentioning

confidence: 99%

Strain hardening behaviors and mechanisms of polyurethane under various strain rate loading

Miao

2020

Polymer Engineering & Sci

View full text Add to dashboard Cite

The uniaxial tension experiments are performed on thermoplastic polyurethane to investigate its mechanical behaviors and related potential mechanisms, and the loading strain rate is designing to be wide ranging from 0.0001 to 1 s −1 . It is found that the polyurethane presents an obvious rate-dependence, and the stress strain curves share distinct strain hardening characteristics under the investigated strain rates. Furthermore, the strain hardening ratios are sharing nearly same trends and appear to be influenced by both strain rate and the induced adiabatic heating. Besides, the ratio is also strain-dependent on previous loading history. Then, a two-dimension unit cell model is built to investigate potential equivalent mechanisms, of which the hard phase as inclusion is equivalent with crystallization zone, crosslinking sites, and so forth. The simulation results facilitate to explain the distinct strain hardening ratios, even for the matrix from the extrapolated curves under super-low strain rate loading. Finally, the analogic mechanisms of equivalent hard inclusions are proposed, which can reasonably explain the strain rate-and strain-dependence characteristics of polyurethane mechanical behaviors. K E Y W O R D Smechanical properties, polyurethane, strain hardening ratio, structure-property relations, tension

show abstract

Section: Resultsmentioning

confidence: 99%

Strain hardening behaviors and mechanisms of polyurethane under various strain rate loading

Miao

2020

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…The thermomechanical and physical properties of rubber, silica and epoxy could be found in the literatures, as listed in Table .…”

Section: Methodsmentioning

confidence: 99%

Temperature effects on rigid nano‐silica and soft nano‐rubber toughening in epoxy under impact loading

Huang

et al. 2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

The rigid nano-silica and soft nano-rubber toughening effects on neat epoxy under impact loading in a range of 250 to 80 8C were investigated. Nanosilica particles (20 nm) toughened neat epoxy at all temperatures with a maximum toughening efficiency at 250 8C and lower efficiency at elevated temperatures. In contrast, except at 250 8C, nano-rubber particles (100 nm) showed the deterioration effect on the impact fracture toughness of epoxy resin. Scanning electron microscopy examinations revealed that the crack pinning and local epoxy deformation induced by rigid particles in term of nano-silica/epoxy and nano-rubber/epoxy interfacial debonding (at 250 8C) led to positive toughening efficiency on neat epoxy. However, at 20 and 80 8C, the rubber cavitations/void plastic growth was significantly suppressed under the impact loading, which led to the negative toughening efficiency on epoxy.

show abstract

“…Nanosilica was assumed linearly elastic having an elastic modulus of 70 GPa, Poisson's ratio of 0.17, and density of 2201 kg/m 3 [17].…”

Section: Unit Cell Analysis Formulationmentioning

confidence: 99%

“…Based on a unit cell model, Li and Ramesh numerically studied the influence of particle volume characteristics on metalematrix composites over a wide stain rate region, and found that rate-dependent flow stress is affected by particle aspect ratio and particle shape [14]. Since then, various unit cell methods were successfully employed to evaluate the thermomechanical behaviors of particle-modified composites such as ceramic-particle modified polymers [15], elastoplastic behavior of porous hierarchical scaffolds [16] and thermomechanical behavior of nanocomposites [17]. The RVE method is also used to investigate the particle size dependence of the elasticeplastic stressestrain response of polymer/clay nanocomposites [18].…”

Section: Introductionmentioning

confidence: 98%

Effects of strain rate on mechanical properties of nanosilica/epoxy

Miao

Liu

Suo

et al. 2016

Composites Part B: Engineering

View full text Add to dashboard Cite

Thermomechanical modeling of polymer nanocomposites by the asymptotic homogenization method

Cited by 25 publications

References 25 publications

Strain hardening behaviors and mechanisms of polyurethane under various strain rate loading

Strain hardening behaviors and mechanisms of polyurethane under various strain rate loading

Temperature effects on rigid nano‐silica and soft nano‐rubber toughening in epoxy under impact loading

Effects of strain rate on mechanical properties of nanosilica/epoxy

Contact Info

Product

Resources

About