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Showing 1 to 20 of 22 for “"Stress Concentration Factors"”.
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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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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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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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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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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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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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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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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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An investigation of residual stresses in simulated wing panels of 7075-T6 aluminum.
… the opportunity to fully exploit residual stresses at stress-critical areas, including their effects on fatigue predictions. An experimental investigation was undertaken to more fully understand them by making photoelastic measurements of residual stresses at notches in simulated wing …
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Determinação da fadiga em estruturas metálicas soldadas submetidas a solicitações dinâmicas
… is determined by the Miner's rule, applying the Stress Concentration Factors (SCF) for the hot-spot stress determination. A computer program has been developed, using FORTRAN language and implemented in the Burroughs 6700. This program allows the determination of linear systems response to …
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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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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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Strength Design Methods for Glass Structures
… in the development of a method to compute stress concentration factors for laminated glass balustrades with two horizontal rows with two bolt fixings. The stress concentration factors are represented graphically in design charts. The use of the design charts allow the maximum principal …
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A geometric method of fatigue SCF and fracture SIF assessment
… a novel geometric methodology to evaluate the stress intensity and stress concentration factors (SIF and SCF). The background and special theory was developed to give: 1. A better understanding of the singularities that commonly occur in sharp corners in ship connection details; 2. A quicker …
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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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Strength and durability of steel to composite joints for marine application
… Due to the geometry of the joint<br/>high stress concentration factors were observed in some locations. It is in these areas that<br/>failure of the joint was predicted in the numerical modelling. Similar results were obtained<br/>experimentally and this gave confidence in the modelling of …
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Thermoelastic stress analysis of laminated composite materials
In this work thermoelastic stress analysis (TSA) is used to obtain quantitative stress/strain data from a variety of multi-directional laminated composites. In order to interpret the thermoelastic signal correctly the source of the thermoelastic response has been investigated in detail. In this …
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On an Effective Submodeling Procedure for Stresses Determined with Finite Element Analysis
Submodeling can enable stress analysts using finite elements to focus analysis on a subregion containing the stress concentration of interest, with consequent computational savings. Such benefits are only truly realized if the boundary conditions on the edges of the subregion that were originally …
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