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Numerical Modeling of Dynamic Crack Propagation in Finite Bodies, by Moving Singular Elements—Part 1: Formulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An efficient numerical (finite-element) method is presented for the dynamic analysis of rapidly propagating cracks in finite bodies, of arbitrary shape, wherein linear-elastic material behavior and ...
Numerical Modeling of Dynamic Crack Propagation in Finite Bodies, by Moving Singular Elements—Part 2: Results
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Using the moving-singularity finite-element method described in Part 1 of this paper, several problems of dynamic crack propagation in finite bodies have been analyzed. Discussions of the effects ...
The First-Order Variation of the Displacement Field Due to Geometrical Changes in an Elliptical Crack
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Analytical expressions are derived for the derivatives of the crack-surface displacement field, with respect to the lengths of the major and minor axes, respectively, of an elliptical crack ...
Analysis of Surface Flaw in Pressure Vessels by a New 3-Dimensional Alternating Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An alternating method, in conjunction with the finite element method and a newly developed analytical solution for an elliptical crack in an infinite solid, is used to determine stress intensity ...
Concepts of Separated J-Integrals, Separated Energy Release Rates, and the Component Separation Method of the J-Integral for Interfacial Fracture Mechanics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: First, this paper presents the concepts of separated J-integrals and separated energy release rates. The path-independent separated J-integrals have the physical significance of energy flows into ...
An Analysis of Dynamic Fracture in an Impact Test Specimen
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical simulations of fast fracture in four cases of dynamic tear test experiments on 4340 steel are performed using a moving singular finite element method. The experimentally measured crack ...
Analysis of Interaction Behavior of Surface Flaws in Pressure Vessels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The evaluation of stress intensity factors for surface flaw problems and, in particular, semi-elliptical surface cracks in cylindrical pressure vessels has been well developed using the finite ...