34 citations · 127 across the 7 of their papers we have counts for
7 papers
Comparing quantum, molecular and continuum models for graphene at large deformations
Aningi Mokhalingam, Reza Ghaffari, Roger A. Sauer +1
In this paper, the validity and accuracy of three interatomic potentials and the continuum shell model of Ghaffari and Sauer [1] are investigated. The mechanical behavior of single…
A nonlinear hyperelasticity model for single layer blue phosphorus based on ab-initio calculations
Reza Ghaffari, Farzad Shirazian, Ming Hu +1
A new hyperelastic membrane material model is proposed for single layer blue phosphorus (), also known as blue phosphorene. The model is fully nonlinear and captures th…
A nonlinear thermomechanical formulation for anisotropic volume and surface continua
Reza Ghaffari, Roger A. Sauer
A thermomechanical, polar continuum formulation under finite strains is proposed for anisotropic materials using a multiplicative decomposition of the deformation gradient. First,…
The multiplicative deformation split for shells with application to growth, chemical swelling, thermoelasticity, viscoelasticity and elastoplasticity
Roger A. Sauer, Reza Ghaffari, Anurag Gupta
This work presents a general unified theory for coupled nonlinear elastic and inelastic deformations of curved thin shells. The coupling is based on a multiplicative decomposition…
A new efficient hyperelastic finite element model for graphene and its application to carbon nanotubes and nanocones
Reza Ghaffari, Roger A. Sauer
A new hyperelastic material model is proposed for graphene-based structures, such as graphene, carbon nanotubes (CNTs) and carbon nanocones (CNC). The proposed model is based on a…
Modal analysis of graphene-based structures for large deformations, contact and material nonlinearities
Reza Ghaffari, Roger A. Sauer
The nonlinear frequencies of pre-stressed graphene-based structures, such as flat graphene sheets and carbon nanotubes, are calculated. These structures are modeled with a nonlinea…
A new shell formulation for graphene structures based on existing ab-initio data
Reza Ghaffari, Thang X. Duong, Roger A. Sauer
An existing hyperelastic membrane model for graphene calibrated from ab-initio data (Kumar and Parks, 2014) is adapted to curvilinear coordinates and extended to a rotation-free sh…