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Št. zadetkov: 5
On the local variation of the crack driving force in a double mismatched weld
Jožef Predan, Nenad Gubeljak, Otmar Kolednik
Izvirni znanstveni članek
Oznake: gonilna sila razvoja razpoke;nehomogenost materiala;nehomogeni zvarni spoj;meja nehomogenosti;J-integral;modeliranje končnih elementov;crack driving force;material inhomogeneity;mismatched weld;interface;finite element modeling;
A material inhomogeneity in the direction of crack extension causes a difference between the near-tip crack driving force, Jtip, and the nominally applied far-field crack driving force, Jfar. This difference can be quantified by a material inhomogeneity term, Cinh, which is evaluated by a post-proce ...
Leto: 2007 Vir: Fakulteta za strojništvo (UM FS)
Computational materials design with the configurational forces concept
Otmar Kolednik, Jožef Predan, Simha Narendra, Dieter F. Fischer
Prispevek na konferenci brez natisa
Oznake: fatigue crack growth;
Computational materials design with the configurational forces concept
Leto: 2008 Vir: Fakulteta za strojništvo (UM FS)
Application of material forces to fracture of inhomogeneous materials
Franz Dieter Fischer, Jožef Predan, Otmar Kolednik, N.K. Simha
Izvirni znanstveni članek
Oznake: crack;shielding;anti-shielding;material forces;
The material forces concept has become an elegant tool in continuum mechanics for the calculation of the thermodynamic driving force of a defect. Based on this concept, we have recently shown that inhomogeneities essentially shield or anti-shield crack tips from applied far-field stresses. The goal ...
Leto: 2007 Vir: Fakulteta za strojništvo (UM FS)
Crack tip shielding or anti-shielding due to smooth and discontinuous material inhomogeneities
N.K. Simha, Franz Dieter Fischer, Otmar Kolednik, Jožef Predan, G.X. Shan
Izvirni znanstveni članek
Oznake: lomna mehanika;lomna žilavost;kompoziti;slojeviti materiali;nehomogenost;razpoke;metoda končnih elementov;elastični bimateriali;fracture mechanics;fracture toughness;composite materials;layered material;inhomogeneity;cracks;finite element method;elastic bimaterials;
This paper describes a theoretical model and related computational methods forexamining the influence of inhomogeneous material properties on the crack driving force in elastic and elastic-plastic materials. Following the configurational forces approach, the crack tip shielding or anti-shielding due ...
Leto: 2005 Vir: Fakulteta za strojništvo (UM FS)
On fracture behaviour of inhomogeneous materials - a case study for elastically inhomogeneous bimaterials
Otmar Kolednik, Jožef Predan, G.X. Shan, N.K. Simha, Franz Dieter Fischer
Izvirni znanstveni članek
Oznake: mehanika konstrukcij;lomna žilavost;nehomogeni materiali;J-integral;gonilna sila razpoke;meja;sila odpora materiala;mechanics of structures;fracture toughness;inhomogeneous materials;crack driving force;interface;material force;
This paper presents a case study, examining the influence of a sharp bimaterial interface on the effective crack driving force in a fracture mechanics specimen. The inhomogeneity of the elastic modulus in linear elasticand non-hardening and hardening elastic-plastic bimaterials is considered. The in ...
Leto: 2005 Vir: Fakulteta za strojništvo (UM FS)
Št. zadetkov: 5
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