Now showing items 11-20 of 73
An investigation into the three-dimensional stress-birefringence-strain relationship in elastomers
(Society of Plastics EngineersWiley Periodiocals, Inc., 1995-03)
The statistical theory of the birefringence of an individual non-Gaussian elastomer chain is used together with a chain network description of rubber elasticity to develop a relationship among the strain, birefringence, ...
Effects of partial closure and friction on a radial crack emanating from a circular hole
(Kluwer Academic Publishers; Martinus Nijhoff Publishers ; Springer Science+Business Media, 1985-05)
A radial crack emanating from a circular hole in an infinite sheet under tension is considered. Depending on the crack length and location, the crack may be partially or completely open or closed. In case of closure, ...
Effects of initial anisotropy on the finite strain deformation behavior of glassy polymers
(Elsevier, 1993)
Solid phase deformation processing of glassy polymers produces highly anisotropic polymer components as a result of the massive reorientation of molecular chains during the large strain forming operation. Indeed, the polymer ...
Effects of pressure sensitivity and notch geometry on notch-tip fields
(Wiley Subscription Services, Inc., A Wiley Company, 1998-07)
Plane-strain stress and slip-line fields near the sharp and round tips of wedge-shaped notches in perfectly plastic pressure-sensitive materials are investigated to illustrate the effects of pressure sensitivity and notch ...
Numerical and experimental analysis for solidification and residual stress in the GMAW process for AISI 304 stainless steel
(Kluwer Academic Publishers; Springer Science+Business Media, 2002-05)
Gas Metal Arc Welding (GMAW) process was analyzed by combining a finite element thermomechanical model for temperature and stress with solidification model. Model prediction was compared with experimental data in order to ...
Rate-dependent compressive behavior of unidirectional carbon fiber composites
(Society of Plastics EngineersWiley Periodicals, Inc., 2004-08)
Unidirectional carbon fiber stitched composites were subjected to off-axis compression under static and low-velocity impact loading. Specimens were cut such that the fibers were at angles of 15°, 30°, 45° and 60° to the ...
On the frictional contact in crack analysis
(Elsevier, 1979)
Following the idea of Bowie and Freese we consider a crack in a field of pure bending. The crack is closed over part of its extent, and the two crack faces in contact are allowed to slip under frictional constraints. The ...
Numerical analysis of notch-tip fields in rubber-modified epoxies
(Wiley Subscription Services, Inc., A Wiley Company, 1999-04)
In this work, the near-tip fields in notched specimens of pressure-sensitive nonporous and porous materials are investigated by finite element analysis. The specimen geometry and material properties are adopted from the ...
Toughening mechanisms in elastomer-modified epoxies
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1986-07)
Some brittle epoxies can be toughened significantly by the addition of an elastomeric phase. A great deal of controversy still exists on the nature of the toughening mechanisms. In this work tensile dilatometry at constant ...
Toughening mechanisms in elastomer-modified epoxies
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1989-07)
The role Of matrix ductility on the toughenability and toughening mechanism of elastomer-modified, diglycidyl ether of bisphenol A (DGEBA)-based epoxies is investigated. Matrix ductility is varied by using epoxide resins ...