Molecular mechanics modeling of shear and the crystal orientation dependence of the elastic precursor shock strength in pentaerythritol tetranitrate

1994 ◽  
Vol 76 (5) ◽  
pp. 2726-2737 ◽  
Author(s):  
J. J. Dick ◽  
J. P. Ritchie
Keyword(s):  
Molecular Mechanics ◽  
Crystal Orientation ◽  
Orientation Dependence ◽  
Pentaerythritol Tetranitrate ◽  
Shock Strength ◽  
Elastic Precursor

Stress Orientation Dependence of Dislocation Glide in Epitaxial Films

1990 ◽  
Vol 202 ◽  
Author(s):  
S. Dakshinamurthy ◽  
K. Rajan
Keyword(s):  
Crystal Orientation ◽  
Stereographic Projection ◽  
Epitaxial Films ◽  
Orientation Dependence ◽  
Stress Axis ◽  
Dislocation Glide ◽  
Stress Orientation ◽  
Slip Transfer

ABSTRACTThe effect of different stresses on the glide of the commonly observed dislocations in epitaxial films is systematically investigated. The possibility of planar dissociation of perfect dislocations and the conditions for their subsequent glide are explored.Slip transfer from one plane to another is affected by the crystal orientation relative to the stress axis. This process is quantitatively analyzed by calculating iso-Schmid factors on a stereographic projection. The results of this model are correlated with those found in the literature.

Atomistic Simulation of Orientation Dependence in Shock-Induced Initiation of Pentaerythritol Tetranitrate

2013 ◽  
Vol 117 (3) ◽  
pp. 928-936 ◽  
Author(s):  
Tzu-Ray Shan ◽  
Ryan R. Wixom ◽  
Ann E. Mattsson ◽  
Aidan P. Thompson
Keyword(s):  
Atomistic Simulation ◽  
Orientation Dependence ◽  
Pentaerythritol Tetranitrate

Crystal orientation dependence of the spin-orbit coupling in InAs nanowires

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
T. S. Jespersen ◽  
P. Krogstrup ◽  
A. M. Lunde ◽  
R. Tanta ◽  
T. Kanne ◽  
...  
Keyword(s):  
Crystal Orientation ◽  
Orientation Dependence ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Inas Nanowires

Orientation Dependence of Ductility of Mg Single Crystals at Elevated Temperature

2005 ◽  
Vol 488-489 ◽  
pp. 193-196 ◽  
Author(s):  
Hiromi Miura ◽  
Taku Sakai ◽  
H. Nogawa ◽  
Xu Yue Yang ◽  
Yoshimi Watanabe ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Crystal Orientation ◽  
Fracture Strain ◽  
Orientation Dependence ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
High Ductility ◽  
Superplastic Behavior ◽  
Strong Orientation

Orientation-controlled Mg single crystals were tensile tested at temperatures between 473 K and 673 K at a strain rate of 4.2 x 10-4 s-1 in vacuum. Though all the single crystals showed high ductility compared with that of polycrystals, the ductility of the single crystals strongly depended on the crystal orientation. The [27 -1 -26 1] single crystal showed 0.57 fracture strain, while the [3 8 -11 -1] single crystal showed superplastic behavior of ductility over 1.8 strain. The observed strong orientation dependence of ductility seemed to be caused by orientation dependence of ease occurrence of dynamic recrystallization (DRX) in the single crystals during high-temperature deformation. The orientation dependence of ductility of Mg single crystals will be discussed in detail concerning crystallographical orientations of the single crystals, occurrence of DRX and fracture.

Crystal orientation dependence of crack growth and stress evolution in single crystal nickel: a molecular dynamics simulation-based cohesive zone model

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 65942-65948 ◽  
Author(s):  
Yuan Qi ◽  
Wen-Ping Wu ◽  
Yun-Bing Chen ◽  
Ming-Xiang Chen
Keyword(s):  
Molecular Dynamics ◽  
Cohesive Zone ◽  
Crystal Orientation ◽  
Cohesive Zone Model ◽  
Orientation Dependence ◽  
Dynamics Simulation ◽  
Zone Model ◽  
Stress Evolution ◽  
Slip Bands ◽  
Simulation Based

Void forms in the sample with (100) orientation; brittle fracture in the sample with (110) orientation; blunting and slip bands occurs in the sample with (111) orientation.

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