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Mechanism of scaphoid waist fracture: finite element analysis
Journal of Hand Surgery (European Volume), 2022The mechanism of scaphoid waist fracture is not completely understood. We used finite element analysis to study the formation of scaphoid waist fractures. Clinical computed tomography scans of 12 wrists were used to create models for finite element analysis.
John Ashutosh Santoshi +3 more
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Probabilistic Finite Element for Fracture Mechanics
HKIE Transactions, 2008This paper presents a probabilistic methodology for fracture mechanics analysis of cracked structures. The main focus is on probabilistic aspect which related the nature of crack in material. The methodology involves finite element analysis; statistical models for uncertainty in material properties, crack size, fracture toughness and loads; and ...
M R M Akramin +5 more
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Finite element methods in fracture mechanics
Computers & Structures, 1989Finite-element methodology specific to the analysis of fracture mechanics problems is reviewed. Primary emphasis is on the important algorithmic developments which have enhanced the numerical modeling of fracture processes. Methodologies to address elastostatic problems in two and three dimensions, elastodynamic problems, elastoplastic problems ...
H. Liebowitz, E.T. Moyer
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Finite element models for rock fracture mechanics
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980AbstractA finite element model for the prediction of discrete fracture propagation in rock structures loaded in compression is presented. The model integrates any one of three theories for mixed‐mode fracture initiation; it contains an energy balance algorithm for predicting crack increment length, and incorporates recent developments in finite element
Ingraffea, Anthony R. +1 more
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Finite stress in fracture mechanics
Engineering Fracture Mechanics, 1994Abstract The problem of implementing an essentially finite solution of the arbitrary boundary condition homogeneous medium mathematical rupture problem in terms of elasticity linear theory is discussed. The relevant concepts taken as a principle solution with the infinite strain values in rupture tips cannot be dealt with by damage mechanics.
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Blunt V-Notch Brittle Fracture: An Improved Finite Fracture Mechanics Approach
Advanced Materials Research, 2015The coupled Finite Fracture Mechanics (FFM) criterion is applied to investigate brittle fracture in rounded V-notched samples under mode I loading. The approach is based on the contemporaneous fulfilment of a stress requirement and the energy balance, the latter being implemented on the basis of a recently proposed analytical expression for the stress ...
SAPORA, ALBERTO GIUSEPPE +3 more
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Convergence of Nonlocal Finite Element Energies for Fracture Mechanics
Numerical Functional Analysis and Optimization, 2007Usually, smeared crack techniques are based on the following features: the fracture is represented by means of a band of finite elements and by a softening constitutive law of damage type. Often, these methods are implemented with nonlocal operators that control the localization effects and reduce the mesh bias.
Lussardi, Luca, Negri, Matteo
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The fracture mechanics of finite crack extension
Engineering Fracture Mechanics, 2005This paper describes a modification to the traditional Griffith energy balance as used in linear elastic fracture mechanics (LEFM). The modification involves using a finite amount of crack extension (Δa) instead of an infinitesimal extension (da) when calculating the energy release rate.
D. Taylor, P. Cornetti, Pugno, Nicola
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Probabilistic finite elements for fracture mechanics
29th Structures, Structural Dynamics and Materials Conference, 1988The probabilistic finite element method (PFEM) is developed for probabilistic fracture mechanics (PFM). A finite element which has the near crack-tip singular strain embedded in the element is used. Probabilistic distributions, such as expectation, covariance and correlation stress intensity factors, are calculated for random load, random material and ...
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Finite Fracture Mechanics for Fractal Cracks
2009We extend the recently developed Quantized Fracture Mechanics (QFM) by Pugno and Ruoff (2004) for fractal cracks. Using an equivalent smooth blunt crack for a given fractal crack, we show that assuming that radius of curvature of the corresponding blunt crack is a material property, the crack roughens while propagating, i.e., fractal dimension at the ...
Arash Yavari, Michael P. Wnuk
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