contributor author | Vijay B. Shenoy | |
contributor author | R. Krishna Kumar | |
date accessioned | 2017-05-08T23:44:19Z | |
date available | 2017-05-08T23:44:19Z | |
date copyright | October, 1994 | |
date issued | 1994 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-26967#465_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/113644 | |
description abstract | In this paper a finite element analysis of steady-state dynamic crack growth under mode I plane strain small scale yielding conditions has been performed in a power law hardening rate dependent plastic material, characterized by the Perzyna over stress model. A modified version of the rate tangent modulus method has been used to update the stress. The main objective of the work is to obtain a quantitative relationship between dynamic fracture toughness ratio (K/Kss ) and crack speed. A plastic strain criteria proposed by McClintock (1968) has been applied to obtain this relationship. It is found that dynamic stress intensity factor increases with velocity for all values of β̂ (a normalized viscosity parameter). At a low value of β̂, which corresponds to high rate sensitivity, the fracture toughness ratio (K/Kss ) increases with hardening. On the other hand, at a higher β̂, the ratio increases initially and falls subsequently, with increasing hardening. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Dynamic Crack Growth in a Power Hardening Viscoplastic Material | |
type | Journal Paper | |
journal volume | 116 | |
journal issue | 4 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.2904314 | |
journal fristpage | 465 | |
journal lastpage | 470 | |
identifier eissn | 1528-8889 | |
keywords | Hardening | |
keywords | Fracture (Materials) | |
keywords | Stress | |
keywords | Fracture toughness | |
keywords | Plane strain | |
keywords | Steady state | |
keywords | Plastics | |
keywords | Viscosity AND Finite element analysis | |
tree | Journal of Engineering Materials and Technology:;1994:;volume( 116 ):;issue: 004 | |
contenttype | Fulltext | |