Results 171 to 180 of about 9,255 (216)

Coronary anastomotic devices: Theory and patented ideas on micromechanical fastening

Current Cardiology Reports, 2000
Coronary anastomotic devices are being designed to reduce the laborious, complex suturing approach to endoscopic coronary surgery. An anastomotic device should be safe and reliable, it should allow full view of the vessel parts to be bonded, it must provide a simple and rapid deployment, and should be hemodynamically adequate.
J S, Scheltes, C, Borst
openaire   +2 more sources

A Composite Micromechanical Model for Connective Tissues: Part I—Theory

Journal of Biomechanical Engineering, 1992
A micromechanical model has been developed to study and predict the mechanical behavior of fibrous soft tissues. The model uses the theorems of least work and minimum potential energy to predict upper and lower bounds on material behavior based on the structure and properties of tissue components.
H K, Ault, A H, Hoffman
openaire   +2 more sources

The Theory of Critical Distances: A link to micromechanisms

Theoretical and Applied Fracture Mechanics, 2017
Abstract The Theory of Critical Distances (TCD) is a methodology for prediction of the effect of stress concentration features on material failure, especially cracking-related mechanisms such as fatigue and brittle fracture. It has a long history but has become much more relevant to industrial problems in recent years thanks to the widespread ...
openaire   +1 more source

A Micromechanical Theory of High Temperature Creep

Journal of Applied Mechanics, 1987
Based on the mechanism of dislocation climb-plus-glide, a micromechanical theory is developed for the high-temperature creep of polycrystals. This model assumes that dislocation climb is responsible for the release of dislocations and whose subsequent glide provides the only significant contribution to the overall creep strain.
openaire   +1 more source

Micromechanical strength theory of hybrid composites

Advanced Composite Materials, 1991
Composite materials containing two or more types of fibers in a common matrix are called hybrid composites. Hybrid composites are attractive because tailoring of materials is easier than non-hybrid composites, and they are now widely used including aircraft, sports goods, and so on.
openaire   +1 more source

Micromechanical consideration on the theory of elasto-plasticity at finite deformations

International Journal of Engineering Science, 1990
Abstract J 2 -based phenomenological plasticity has unchallengedly dominated the scene of the practical applications. However, when the finite deformations are involved, the proper way to generalize the theory is still under the debate. The objective of this work is to examine the phenomenological theory of elasto-plasticity at finite deformations ...
Makoto Obata, Yoshiaki Goto, Sei Matsuura   +2 more
openaire   +1 more source

Critical Thickness Theory Applied to Micromechanical Testing

Advanced Engineering Materials, 2012
AbstractCritical thickness theory for the plastic deformation of small stressed volumes is reviewed, with particular emphasis on its application to the size effect in common micromechanical testing methods, foil flexure, wire torsion, and compression and tension of micropillars and wires.
openaire   +1 more source

Insights into 1D localisation theory and micromechanical constitutive laws

Géotechnique, 2004
Continuum constitutive models enjoy widespread use in geotechnical engineering, particularly in applications that are beyond the scope of current discrete element (DEM) simulations...
Tordesillas, A., Peters, J.F., Gardiner, B.S.   +2 more
openaire   +1 more source

A micromechanically consistent poroviscoelasticity theory for rock mechanics applications

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1993
Rocks can exhibit viscoelastic properties, depending on the loading conditions, the environment, and the time scale of interest. For fluid saturated rocks, the coupling effects between pore pressure diffusion and rock matrix deformation give rise to similar but different time dependent phenomena.
Y. Abousleiman, A.H.-D. Cheng, C. Jiang, J.-C. Roegiers   +3 more
openaire   +1 more source

Nonlocal Damage Theory Based on Micromechanics of Crack Interactions

Journal of Engineering Mechanics, 1994
A nonlocal continuum model for strain‐softening damage is derived by micromechanics analysis of a macroscopically nonhomogeneous (nonuniform) system of interacting and growing microcracks, using Kachanov's simplified version of the superposition method.
openaire   +2 more sources