Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 57 for “"Axial Loading"”.
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Nonlinear analysis of free-edge effects in laminated composites under axial loading
A finite element model based on the quasi-three dimensional displacement field of Pipes and Pagano [1] with nonlinear strain-displacement relations is developed to study the free edge problem of composite laminates. Numerical results are presented to show the difference between the results of the …
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Material characterization and axial loading response of pouch lithium ion battery cells for crash safety
… on battery cell pouch material using uniaxial stress and biaxial punch tests. At the full cell level, hemispherical punch indentation validation testing and internal electric short circuit testing was conducted on large, high energy pouch cells. Further investigations at the full cell …
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Hybrid experimental-numerical determination of the loading path to fracture in TRIP780 sheets subjected to multi-axial loading
… histories up to the onset of fracture in multi-axial experiments. In the present work, a hybrid experimental-numerical approach is taken to determine the loading path in various fracture experiments on TRIP780 steel sheets. In most mechanical experiments on sheet metal, the localization of …
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Interaction of Variable Axial Load and Shear Effects in RC Bridges
… to investigate the influence of the amplitude of axial loading cycles, the frequency of axial loading cycles, and sequencing or phase of axial loading peaks relative to lateral loading. Generally, behavior of the specimens including aspects of strength, stiffness, energy absorption, and failure …
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Bending of an Axially Loaded Strand With Friction and the Mechanics of Wire Rope Reinforced Cylinders
… the stresses in a single lay strand subjected to axial, bending, and torsional loads when friction is present. Similar to the solution for the axial loading of a strand, the curvatures and twist of the wires in bending are estimated and the loads required for equilibrium are obtained by solving …
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Biaxial Mechanical Evaluation of Uterosacral and Cardinal Ligaments
… comparison of histological and planar equi-biaxial mechanical properties of the swine and human USLs was completed. Relative collagen, smooth muscle, and elastin contents were quantified from histological sections and the USL was found to have similar components in both species, with a …
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Effective Length of Fractured Wires and a Fatigue Analysis of Wire Rope
… stresses between the wires in a wire rope under axial loading. The rope is regarded as a collection of smooth helical rods. The determination of the contact stresses between wires is based on the solution of Hertz's contact problem. The results are applied to a simple strand and a wire rope with …
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Analysis of Force-Limiting Capabilities of Football Neck Collars
… impacts were performed at side, front, and axial loading impact locations, with low and high speed impacts, and normal and raised shoulder pad configurations. Each collar was effective at some positions, but no collar was effective at all impact locations. The Cowboy Collar reduced lower …
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Rate-Dependent Behavior of Clay
… the mechanical response of clays under multi-axial loading conditions and predicts both drained and undrained behaviors at small and large strains. Model parameter values are determined for Boston Blue Clay, London Clay and Kaolin Clay. The performance of the model in simulating the mechanical …
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Micromechanics of strength-related phenomena in composite materials
… fractures in unidirectional composites under axial loading; the tensile strength of unidirectional composites; fiber coatings that can be used to maximize the transverse strain-to-failure and longitudinal shear strain-to-failure of composites; and the compression strength of composite …
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The development of a modified biaxial composite test specimen
Bi-axial testing of composite structures has been an important topic in the research community for some years now. Bi-axial test specimens in the past have typically been cruciform specimens with a tapered thickness gage section. This ensures that the specimen will fail under bi-axial loading …
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Design and Validation of a Full Contact Gait Simulator for the Cadaveric Lower Extremity
… dorsi and plantar flexion of the ankle under axial loading. A system of pneumatic load generation was connected a LabVIEW virtual instrument (VI), which controlled the application of these loads. The loads were roughly based off literature cited EMG data, and further modified from feedback. In …
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STATIC STRENGTH OF DOUBLE-SKIN GROUTED X-JOINT INFILLED WITH HIGH STRENGTH GROUT
… the double-skin grouted X-joints under brace axial loading. Thirteen double-skin grouted X-joints have undergone ultimate static strength testing at National University of Singapore Civil Engineering Structural Laboratory: 8 under brace axial tension and 5 under brace axial compression. Key …
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Probabilistic capacity and seismic demand models and fragility estimates for reinforced concrete buildings based on three-dimensional analyses
… strength and stiffness degradation under the bi-axial loading. The proposed approach for the fragility estimate considers the uncertainties involved in the spectral acceleration components and capacity variation. The proposed approach is illustrated considering a typical 3-story RC building and …
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Fracture of welded aluminum thin-walled structures
… (i) S-rails under quasi-static and dynamic axial loading; (ii) large-scale extruded aluminum panels under 4-point bending. With the fracture parameter calibrated from uniaxial tensile tests, numerical simulations gave excellent predictions of crack formation for test articles. A novel …
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Effect of fiber morphology on composite properties
… states resulting in the composite cylinder for axial, radial, axial shear, and thermal loads were examined. Singular stresses were observed to occur at r=0 in some fibers in some load conditions. The presence of a transversely isotropic core, which must exist in a real fiber, removed this …
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Damage analysis and mechanical response of as-received and heat-treated Nicalon/CAS-II glass-ceramic matrix composites
… laminates subjected to monotonic flexure and axial loading and to cyclic tensile loading are reported. The specimens were subjected to post-processing heat treatments at 900°, 1000°, and l100°C in air for 100 hours. Changes at the fiber/matrix interface/interphase due to post-processing heat …
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The influence of different connecting rod configurations on the stability of the Ilizarov Frame: A biomechanical study
… centre and off centre (thus simulated bending) axial loading was then applied across the frame. The configurations were loaded up to 4000 Newtons. The frame deformation was plotted and the data was then analysed and interpreted. Results: Negligible differences were observed between different …
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Application and analysis of stiffened side shell panel failure for naval patrol craft
… craft are subjected to many different types of loading scenarios, most of which are perfectly safe. In rare instances, through a variety of different reasons, these craft are loaded beyond their means, resulting in structural failure. This thesis focuses on how side shell stiffened panel failure …
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