Results 211 to 220 of about 21,021 (266)
Some of the next articles are maybe not open access.
Three-dimensional crack closure behavior
Engineering Fracture Mechanics, 1990A crack closure measurement technique involving fatigue striations was used to produce a three-dimensional crack opening load profile for 2024-T351 aluminum alloy. The crack opening load profile, determined through the specimen thickness, was compared with crack opening load measurements made with strain gages and displacement gages.
D.S. Dawicke, A.F. Grandt, J.C. Newman
openaire +1 more source
Simulation of three-dimensional cracks
The Visual Computer, 2000We describe a method for simulating the process of cracking based on a 3D physical model. Cracks appear when the stress caused by internal or external force exceeds the tolerable amount. We applied a spring network model to a simulation of cracks that appear on drying clay. Clay contracts, or shrinks, as it dries.
Hirota, Koichi +2 more
openaire +2 more sources
Three-Dimensional Slightly Nonplanar Cracks
Journal of Applied Mechanics, 1992Abstract Three-dimensional slightly nonplanar cracks are studied via a perturbation method valid to the first-order accuracy in the deviation of the crack shape from a perfectly planar reference crack. The Bueckner-Rice crack-face weight functions are used in the perturbation analysis to establish a relationship, within first-order ...
openaire +1 more source
Three‐dimensional analysis of thermally loaded cracks
International Journal for Numerical Methods in Engineering, 1993AbstractThe stress intensity factors for cracks in three‐dimensional, thermally stressed structures are computed by using the boundary element method. While many boundary and volume‐integral‐based formulations are available for the treatment of thermoelastic problems in solids, the present analysis is based on a recently developed boundary‐only ...
Raveendra, S. T. +2 more
openaire +2 more sources
Three‐dimensional liquid transport in concrete cracks
International Journal for Numerical and Analytical Methods in Geomechanics, 2004AbstractCracks in concrete are measured in 3D by microfocus X‐ray computer tomography. The tomographic images are thresholded matching a characteristic of the measured crack attenuation profile. A methodology is proposed to convert the 3D measured voxel data into a network of parallel plates.
Carmeliet, J. +3 more
openaire +2 more sources
Three-dimensional crack analysis
International Journal of Solids and Structures, 1977Abstract A method is presented for the stress analysis of plane cracks of any shape in a stressed three-dimensional linear elastic space. The approach utilizes a system of integral equations which is defined over the crack area only. When these equations are solved for the unknown dislocations, all other quantities related to the crack and the space ...
openaire +2 more sources
Self-Similar Crack Expansion Method for Three-Dimensional Crack Analysis
Journal of Applied Mechanics, 1997The self-similar crack expansion method is developed to calculate stress intensity factors for three-dimensional cracks in an infinite medium or semi-infinite medium by the boundary integral element technique. With this method, the stress intensity factors at crack tips are determined by calculating the crack-opening displacements over the crack ...
Xu, Yonglin, Moran, B., Belytschko, T.
openaire +2 more sources
Boundary elements for three‐dimensional elastic crack analysis
International Journal for Numerical Methods in Engineering, 1987AbstractIn this paper 8‐node traction singular boundary elements are employed to represent displacement and traction variations in the vicinity of the crack front in three‐dimensional geometries. The numerical procedure suggested for evaluating the singular integrals extending over these special elements is described. The efficiency and accuracy of the
Luchi M. L, RIZZUTI, Sergio
openaire +2 more sources
AN ANALYSIS FOR THREE DIMENSIONAL CRACKS
Fatigue & Fracture of Engineering Materials & Structures, 1994Abstract— A new method of analysis is proposed for an infinite solid containing an embedded plane crack of arbitrary shape. The analysis is fundamentally based on the body force method, but proper expressions of the body force densities are introduced and the stress conditions of the crack surface are replaced by the resultant force conditions in order
M. ISIDA, H. TSURU, H. NOGUCHI
openaire +1 more source
Analysis of Three-Dimensional Cracks with Independent Crack Mesh
Solid State Phenomena, 2006In order to simulate the growth of arbitrarily shaped three-dimensional cracks, the finite element alternating method is extended. As the required solution for a crack in an infinite body, the symmetric Galerkin boundary element method formulated by Li and Mear is used.
Tae Soon Kim +4 more
openaire +1 more source