Three-Dimensional Analysis of Short-Bar Chevron-Notched Specimens by the Boundary Integral Method PDF Download
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Author: A. Mendelson Publisher: ISBN: Category : Boundary integral method Languages : en Pages : 12
Book Description
An analysis was performed, of the three-dimensional elastic problem of the chevron-notched short-bar specimen, using the boundary integral equation method. This method makes use of boundary surface elements only in obtaining the solution. Results were obtained for various notch geometries, and included displacement and stress fields. Load line displacements, and stress-intensity factors determined both from strain calculations and compliance calculations were compared with experimental values obtained at NASA Lewis Research Center. Good agreement was obtained.
Author: A. Mendelson Publisher: ISBN: Category : Boundary integral method Languages : en Pages : 12
Book Description
An analysis was performed, of the three-dimensional elastic problem of the chevron-notched short-bar specimen, using the boundary integral equation method. This method makes use of boundary surface elements only in obtaining the solution. Results were obtained for various notch geometries, and included displacement and stress fields. Load line displacements, and stress-intensity factors determined both from strain calculations and compliance calculations were compared with experimental values obtained at NASA Lewis Research Center. Good agreement was obtained.
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781725622586 Category : Languages : en Pages : 34
Book Description
Stress-intensity factors and load-line displacements were calculated for chevron-notched bar and rod fracture specimens using a three-dimensional finite-element analysis. Both specimens were subjected to simulated wedge loading (either uniform applied displacement or uniform applied load). The chevron-notch sides and crack front were assumed to be straight. Crack-length-to-specimen width ratios (a/w) ranged from 0.4 to 0.7. The width-to-thickness ratio (w/B) was 1.45 or 2. The bar specimens had a height-to-width ratio of 0.435 or 0.5. Finite-element models were composed of singularity elements around the crack front and 8-noded isoparametric elements elsewhere. The models had about 11,000 degrees of freedom. Stress-intensity factors were calculated by using a nodal-force method for distribution along the crack front and by using a compliance method for average values. The stress intensity factors and load-line displacements are presented and compared with experimental solutions from the literature. The stress intensity factors and load-line displacements were about 2.5 and 5 percent lower than the reported experimental values, respectively. Raju, I. S. and Newman, J. C., Jr. Langley Research Center NASA-TM-85798, NAS 1.15:85798 RTOP 505-33-23-02...
Author: Ersan Ustundag Publisher: John Wiley & Sons ISBN: 0470295023 Category : Technology & Engineering Languages : en Pages : 655
Book Description
This volume is part of the Ceramic Engineering and Science Proceeding (CESP) series. This series contains a collection of papers dealing with issues in both traditional ceramics (i.e., glass, whitewares, refractories, and porcelain enamel) and advanced ceramics. Topics covered in the area of advanced ceramic include bioceramics, nanomaterials, composites, solid oxide fuel cells, mechanical properties and structural design, advanced ceramic coatings, ceramic armor, porous ceramics, and more.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 700
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: A. Mendelson
Author: A. Mendelson
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Author: Louis J. Ghosn
Author: John H. Underwood
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Author: National Aeronautics and Space Administration (NASA)
Author: Ersan Ustundag
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Author: Anthony Martin Calomino
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