Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ruqiang Feng"'
Publikováno v:
Experimental Mechanics. 50:709-716
Many models use the equilibrium stress, also sometimes known as the back stress, in characterizing the response of both polymeric and non-polymeric materials. We study the characteristics of the equilibrium and show that the tangent modulus and local
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69b9d124df768bf8d3883a2a4d3b9c38
https://doi.org/10.1007/s11340-009-9268-z
https://doi.org/10.1007/s11340-009-9268-z
Publikováno v:
Journal of Engineering Materials and Technology. 128:537-542
One group of models proposed for characterizing the mechanical response of glassy polymers is based on a structure that resembles finite plasticity. In most cases, a constitutive equation for stress is proposed, which depends on the elastic deformati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::907940aa6bb207d9bcb7bb5dbf952863
https://doi.org/10.1115/1.2345445
https://doi.org/10.1115/1.2345445
Publikováno v:
The Journal of Chemical Physics. 119:8013-8023
The quasicontinuum (QC) technique, in which the atomic lattice of a solid is coarse-grained by overlaying it with a finite-element mesh, has been employed previously to treat the quasistatic evolution of defects in materials at zero temperature. It i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::767c5149fcbaa258004c2e058ccd91e4
https://doi.org/10.1063/1.1607914
https://doi.org/10.1063/1.1607914
Publikováno v:
Journal of Visualized Experiments : JoVE
A novel impulsive cell pressurization experiment has been developed using a Kolsky bar device to investigate blast-induced traumatic brain injury (TBI). We demonstrate in this video article how blast TBI-relevant impulsive pressurization is applied t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::193a0c1282479175e17b2fb44190a964
https://pubmed.ncbi.nlm.nih.gov/22005926
https://pubmed.ncbi.nlm.nih.gov/22005926
Autor:
Joseph A. Turner, Mehrdad Negahban, Florin Bobaru, C. A. Nelson, Namas Chandra, Ruqiang Feng, Jung Y. Lim
The goal of this project is to understand the fundamental material and mechanical behaviors of protective systems in mitigating brain trauma under blast loading conditions. Such knowledge will enable the development of a reliable, repeatable testbed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ded8db1c8d415f88e643c99ca534e83a
https://doi.org/10.21236/ada546812
https://doi.org/10.21236/ada546812
Publikováno v:
The Journal of chemical physics. 125(6)
A treatment of multiscale quasistatic processes that combines an atomistic description of microscopic heterogeneous ("near") regions of a material with a coarse-grained (quasicontinuum) description of macroscopic homogeneous ("far") regions is presen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6374d252606fa6aae03fcc31a6cfe32
https://pubmed.ncbi.nlm.nih.gov/16942303
https://pubmed.ncbi.nlm.nih.gov/16942303
Autor:
Ruqiang Feng, Dongmei Zhang
Publikováno v:
AIP Conference Proceedings.
Combined Voronoi polycrystal and finite element modeling is developed and used to compute the mean stress response of uniaxially compressed polycrystalline α‐Al2O3 from its crystal elasticity, modeled with both the second‐ and third‐order elas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f389f78ec7265de5278087fb6b01b59d
https://doi.org/10.1063/1.2263341
https://doi.org/10.1063/1.2263341
Publikováno v:
The Journal of chemical physics. 123(16)
A new treatment of quasistatic (reversible) multiscale processes in heterogeneous materials at nonzero temperature is presented. The system is coarse grained by means of a finite-element mesh. The coarse-grained free-energy functional (of the positio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42d12cc67681b79d95038841bc014f50
https://pubmed.ncbi.nlm.nih.gov/16268683
https://pubmed.ncbi.nlm.nih.gov/16268683
Autor:
Dongmei Zhang, Ruqiang Feng
Publikováno v:
AIP Conference Proceedings.
A polycrystalline ceramic may display high strength under dynamic compression but fails catastrophically during load reversal to tension. One plausible mechanism is that heterogeneous plasticity in some of the crystals under compression induces micro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfe2488f71722ef42addc24c0eb663b0
https://doi.org/10.1063/1.1766811
https://doi.org/10.1063/1.1766811
Publikováno v:
Journal of Applied Physics. 108:013527
Molecular dynamics was used to simulate the tensile behavior of monoclinic ZrO2 bicrystals constructed by fusing two symmetrically tilted single crystals at several temperatures ranging from 300 to 1200 K and then annealing them to 300 K. The average
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4824574af42d513607640dc74f13591
https://doi.org/10.1063/1.3452340
https://doi.org/10.1063/1.3452340