Results 111 to 120 of about 493 (138)
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Fatigue Crack Growth at Notches Considering Plasticity Induced Closure
2008Classical fatigue analyses discriminate between technical crack initiation (crack length of about 1mm) and crack propagation stages. The stage of crack initiation, however, is itself dominated by the growth of short fatigue cracks. Based on the assumption that a fatigue life to initiate a microstructurally short crack of dimensions in the order of 10µm
Jutta Bruening +3 more
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Plasticity Induced Crack Closure under Plane Strain Conditions
Key Engineering Materials, 2011Plasticity Induced Crack Closure (PICC) is a main phenomenon affecting fatigue crack growth and must be included in the design of components. The objective of the present paper is to study the level of PICC under plane strain conditions. The numerical parameters were identified and optimized. The effects of load level and material model were studied.
Fernando Antunes +2 more
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Fatigue & Fracture of Engineering Materials & Structures, 2018
AbstractIn the present work, comprehensive investigation of both theoretical analysis and numerical simulation was carried out to investigate the plastic mismatch effect on plasticity induced crack closure (PICC) behavior and effective fatigue crack tip driving force.
Xiao‐Xiong Song +4 more
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AbstractIn the present work, comprehensive investigation of both theoretical analysis and numerical simulation was carried out to investigate the plastic mismatch effect on plasticity induced crack closure (PICC) behavior and effective fatigue crack tip driving force.
Xiao‐Xiong Song +4 more
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Bauschinger effect of alloys and plasticity‐induced crack closure: a finite element analysis
Fatigue & Fracture of Engineering Materials & Structures, 2000The effect of overloads, underloads and stress ratio on plasticity‐induced crack opening level is examined for different ‘model’ materials. This study is focused on the consequences of the Bauschinger effect on the crack opening level. Various finite element analyses were conducted using ABAQUS to test these effects, involving the Chaboche constitutive
Pommier, Sylvie, Bompard, Philippe
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Dislocation-based model of plasticity and roughness-induced crack closure
International Journal of Fatigue, 2013Abstract Along with external forces and the macro-geometry of cracked bodies, the local stress intensity factors Δk and kmax at fatigue crack fronts are also determined by internal stress fields and the crack front microgeometry (extrinsic shielding).
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An Analytical Investigation of Plasticity Induced Closure Involving Short Cracks
1988Plasticity induced crack closure and its effect on the fatigue growth of short cracks is investigated numerically. A plane stress finite-element analysis is used to simulate a nonpropagating crack of length 65 μm in a single-edge-cracked specimen under two stress levels and two values of stress ratio R.
T Nicholas, AN Palazotto, E Bednarz
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A BOUNDARY ELEMENT MODEL OF PLASTICITY‐INDUCED FATIGUE CRACK CLOSURE
Fatigue & Fracture of Engineering Materials & Structures, 1998This paper describes a plane stress boundary element model of plasticity‐induced fatigue crack closure. A simple Dugdale‐type strip yield zone is used and quadratic programming techniques are employed to establish crack shape, stress and plastic deformation.
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Towards three dimensional aspects of plasticity-induced crack closure: A finite element simulation
International Journal of Fatigue, 2022Florian Paysan, Eric Breitbarth
exaly