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Showing 1 to 20 of 153 for “"Stress Concentration"”.
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Alleviation of stress concentration with analogue reinforcement
In order to reduce the stress concentration around a hole in a plate, new, “analogue” reinforcements instead of reinforcing rings were used in this investigation. In two of these specimens, reinforcements with different volume fractions were arranged to coincide with the stress trajectories for an …
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Determination of stress concentration factors using experimental methods
Several experimental methods are examined for stress concentration factor determination. Tests are performed on a chosen 2-D specimen using strain gages, brittle coating, brittle specimen failure, photoelasticity, and Moire interferometry. Results are compared to each other and to finite element …
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Torsional stress concentration factor for hollow stepped shafts
In this investigation the stress concentration factor was evaluated for a hollow stepped shaft with variable wall thickness and two fillet sizes. Electric strain gages of the SR-4 type were employed to measure strains in the fillet section. Values of the stress concentration factor were determined …
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Stress concentration around dowel bars in jointed rigid concrete pavements
In this study, the magnitude and state of stresses induced around dowel bars were identified through detailed 3D Finite Element (3DFE) modeling of dowel jointed rigid pavement structures. Both straight and skewed joints were modeled using extremely fine meshing that allows accurate modeling of the …
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Stress concentration in the eye section of a connecting rod
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1941.
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Interacting stress concentration factors and their effect on fatigue of metallic aerostructures
… or some other similar detail. The interaction of stress concentration effects between a hole and step are not well understood and the resulting impact on fatigue performance is difficult to predict. There exists a need for fatigue data that can be used to determine the analysis methods for …
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Stress concentration factors of stepped structures and shouldered shafts under combined loading
… to observe how the loading conditions effect the stress concentration factors. The results from the finite element analyses were compared to Peterson’s photoelastically determined stress concentration factors. The results were within five percent of Peterson’s results. For the two- dimensional …
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Calculation of Stress Concentration Factors in Filleted Members by the Equivalent Surface-Shear Load Method
Made available in DSpace on 2014-12-04T23:10:59Z (GMT). No. of bitstreams: 1 5904532.pdf: 1572703 bytes, checksum: c2ef4e19a2f2c730686faff1f4f9e8a5 (MD5) Previous issue date: 1959
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Stress Interference in Axisymmetric Torsion of a Transversely Isotropic Body (Elasticity, Solid Mechanics, Anisotropic, Stress Concentration)
… cavities. Of primary interest is the degree of stress interference between the two perturbations, as a function of the spacing of the cavities and the values of the elastic constants.
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A simplified method for the photoelastic determination of stress concentration factors in a tensile stress field
The stress concentration factors for rectangular slots with semicircular ends with their major axes inclined to the direction of a uniaxial tension field were investigated by photoelastic methods. A major portion of this thesis deals with the problem of loading a circular disk such as to create an …
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Avaliação de concentração de tensão em dutos danificados sob pressão interna após reparo
This study evaluates the stress concentration of plain dents due to mechanical damage in steel pipes under internal pressure before and after repair. The work is focused on the development of a numerical model, based on the finite element method, to produce stress concentration factors of plain …
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Stress reduction in a plate with a hole by applied induced strains
This work investigates the potential of reducing stresses in the region of stress concentration by applied induced strains. A thin 30 inch square plate with a 1 inch diameter circular hole under uniaxial load was used for this investigation. This investigation considered first an ideal case with a …
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Concentração de tensões em chapas infinitas tracionadas
… work presents a theoretical development about stress concentration in infinite plates with holes, using complex variables functions. Applications of this technique to different problems are presented as well as the soluction of the same problems using Finite Element Method. Through results …
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Fatigue Performance of Brass Light Pole Couplings
… and individual loading configurations. The stress concentration factor, Ktb, determined by strain measurement at hexagonal and notched sections was 5.70, which is slightly higher than the theoretical stress concentration factor of 4.7. Fatigue tests were also performed on the notched …
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Boundary element modeling of elasticity in materials in terms of distribution of second phase structures
… this study examines the relationship between stress parameters, such as stress concentration and normal traction, and geometrical parameters such as separation distance and orientation. The use of BEM enables easy manipulation of internal objects and rapid re-calculation in a series of …
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Interaction of stress-raising features in aerostructures
… on the accurate and consistent determination of stress concentration factors around stress-raising features. Within aerostructures, design problems often occur where two or more geometric features are placed in close proximity such that their associated stress-fields interact. It is difficult to …
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Análise de fadiga nas armaduras de tração de dutos flexíveis considerando efeitos da corrosão marinha
… considering armour corrosion, the associated stress concentration factors and S-N fatigue curves. It was devised i) a stress concentration model based on uniform corrosion, ii) a fatigue curve selection criteria with annular conditions and armour surface deterioration inferred from corrosion …
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A finite element analysis of pinion shaped spur gear teeth
… with a pinion cutter upon the geometry and root stresses in external spur gears using the finite element method is given. The models analyzed have the shape of a ring with three teeth. The middle tooth is loaded and load sharing has been assumed. Thirty-five finite element models were used for …
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Stress concentrations in undercut spur gear teeth via the finite element method
… analysis of the influence of undercutting on the stress concentration factor for undercut gears using the finite element method is presented. The models used are in the shape of a whole gear with three teeth. The middle tooth is loaded assuming single-tooth contact. Thirty seven finite element …
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Stress study in faulted tunnel models by combined photoelastic measurements and finite element analysis
… to develop a proper technique for analyzing the stresses in and around three adjacent scaled tunnel models, along with the stress concentration factors resulting from the existence of a fault that penetrates two of the three tunnels, at an inclined angle; Photoelasticity and Finite Element …
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