Thermo-elastic analysis of edge dislocation using extended finite element methodNeha Duhan aR.U. Patil bB.K. Mishra aI.V. Singh aY.E. Pak cInternational Journal of Mechanical Sciences
A modified 3D discrete-continuous method (DCM) is proposed in Section 12.4 to deal with thermally activated dislocation climb, in which the vacancy diffusion equation is solved by the finite element method (FEM) and the timescale separation between glide and climb is handled by an adaptive ...
As the asperity contacts are extended to form a large contact, one of the embryonic dislocations grows as stable shear loop (yellow arrow), dominating the later stage of deformation. The shear loop undergoes multiple cross slips successively, indicating that the cross slip of this large shear ...
A multiscale method based on the extended space-time finite element method is developed for the coupled atomistic/continuum simulation of nanoscale materia... SU Chirputkar,D Qian - 《Computer Modeling in Engineering & Sciences》 被引量: 37发表: 2008年 Atomistic/continuum coupling in computational...
The local direction of the tensile axis can slightly deviate from the imposed one by several degrees in the foil plane. However, it can be determined with a pretty good accuracy in samples with rounded holes and containing no cracks, on the basis of finite element calculations. Local Schmid ...
Micromechanics of strain rate dependent elastic response, within the proportionality limit in metals is investigated, on the basis of dislocation kinetics. It is postulated that, the strain rate dependence of proportionality limit stress is dominated by inertia of dislocations, over drag controlled mechan...
the finite element method in which the geometry is modelled exactly, but the subsequent solution is approximate, and computationally more taxing. The family of techniques presented in this book, based loosely on the pioneering work of Eshelby in the late 1950's, and developed by Erdogan, Keer,...
A method for solving small-strain plasticity problem with plastic flow represented by the collective motion of a large number of discrete dislocations is presented. The dislocations are modelled as line defects in a linear elastic medium. At each instant, superposition is used to represent the solut...
Extended dislocation half-loops, of a/2〈 111 〉 Burgers vector, appear in ferrite of dual-phase type HSLA steels and welds as controlling to a large extent the progress of (micro)plastic deformation of the ferrite. The criss-cross configuration of such half-loops was not very sensitive to...
Related terms: Energy Engineering Grain Boundary Dynamic Models Finite Element Method Nanoscale Boundary Condition Crack Tip Dimensional Dislocation Multiscale Modeling Discrete Dislocation Dynamics View all Topics Recommended publications Journal of the Mechanics and Physics of Solids Journal ...