Crack initiation and propagation in small-scale yielding using a nonlocal GTN model

2020 ◽  
Vol 130 ◽  
pp. 102701 ◽  
Author(s):  
Youbin Chen ◽  
Eric Lorentz ◽  
Jacques Besson
Keyword(s):  
Crack Initiation ◽  
Small Scale ◽  
Crack Initiation And Propagation ◽  
Small Scale Yielding ◽  
Gtn Model ◽  
Initiation And Propagation ◽  
Scale Yielding

Fracture of Circumferentially Cracked Pipes

1986 ◽  
Vol 108 (4) ◽  
pp. 529-531 ◽  
Author(s):  
A. Zahoor
Keyword(s):  
Crack Initiation ◽  
Closed Form ◽  
Axial Displacement ◽  
Load Control ◽  
Small Scale ◽  
Small Scale Yielding ◽  
Linear Elastic ◽  
Scale Yielding

Closed-form expressions are derived for linear elastic axial displacement and bending deflection of circumferentially cracked pipe under combined tension and bending. Formulas are then presented for the applied tearing modulus for: 1) load control and 2) displacement-controlled loading. These formulas are very useful for predicting crack initiation and instability under small-scale yielding conditions.

scholarly journals Simulation of Crack Propagation under Small-Scale Yielding by means of a Non-local GTN-Model

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 157-158
Author(s):  
Geralf Hütter ◽  
Thomas Linse ◽  
Uwe Mühlich ◽  
Meinhard Kuna
Keyword(s):  
Crack Propagation ◽  
Small Scale ◽  
Small Scale Yielding ◽  
Gtn Model ◽  
Scale Yielding ◽  
Non Local

Influence of Striker Shape on the Crack Initiation and Propagation on Laterally Impacted Thin Aluminium Plates

2013 ◽  
Author(s):  
Bin Liu ◽  
Richard Villavicencio ◽  
C. Guedes Soares
Keyword(s):  
Crack Initiation ◽  
Failure Modes ◽  
Testing Machine ◽  
Tensile Tests ◽  
Impact Testing ◽  
Small Scale ◽  
Crack Initiation And Propagation ◽  
Initiation And Propagation ◽  
The Matrix ◽  
Force Displacement

Experimental and numerical results of drop weight impact tests are presented, examining the plastic response and the crack initiation and propagation of small-scale clamped rectangular aluminium plates laterally impacted by different indenter shapes. The experiments are conducted using a fully instrumented impact testing machine. The shape of the deformation of the specimens and the process of initiation and propagation of the material fracture is presented. The obtained force-displacement responses show a good agreement with the simulations performed by the LS-DYNA finite element solver. The strain hardening of the material is defined using experimental data of quasi-static tensile tests and the critical failure strain is evaluated measuring the thickness and the width at fracture of the tensile test pieces. The results show that the absorbed energy to perforate the specimens is highly sensitive to the shape of the striker. Thus, the crack propagation for each striker type is analysed in terms of the force-displacement response. The failure modes are described by the matrix of the infinitesimal strain tensors and the shape of the deformation of the failing elements.

Influence of Striker Shape on the Crack Initiation and Propagation on Laterally Impacted Thin Aluminum Plates

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
B. Liu ◽  
R. Villavicencio ◽  
C. Guedes Soares
Keyword(s):  
Crack Initiation ◽  
Failure Modes ◽  
Testing Machine ◽  
Tensile Tests ◽  
Impact Testing ◽  
Small Scale ◽  
Crack Initiation And Propagation ◽  
Initiation And Propagation ◽  
Aluminum Plates ◽  
Force Displacement

Experimental and numerical results of drop weight impact tests are presented, examining the plastic response and the crack initiation and propagation of small-scale clamped rectangular aluminum plates laterally impacted by different indenter shapes. The experiments are conducted using a fully instrumented impact testing machine. The shape of the deformation of the specimens and the process of initiation and propagation of the material fracture are presented. The obtained force–displacement responses show a good agreement with the simulations performed by the ls-dyna finite element solver. The strain hardening of the material is defined using experimental data of quasi-static tensile tests and the critical failure strain is evaluated by measuring the thickness and the width at fracture of the tensile test pieces. The results show that the absorbed energy to perforate the specimens is highly sensitive to the shape of the striker. Thus, the crack propagation for each striker type is analyzed in terms of the force–displacement response. The failure modes are described by the matrix of the infinitesimal strain tensors and the shape of the deformation of the failing elements.

Sign in / Sign up

Export Citation Format

Share Document