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 118 for “"load-displacement"”.
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Evaluation of Scale Effects in Load-Displacement Response of Drilled Shafts Based on Field Load Tests
Load testing such as standard top-down or bi-directional tests are widely accepted practices that provide foundation designers with site-specific information about the nominal resistance of drilled shaft foundations. The application of load testing in drilled shaft foundations provides insight into …
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Preliminary Design of an Improved Load Measuring Device for Underground Mining Standing Supports
… underground retreat mining. Knowledge of the load-displacement behavior of a standing support and loading induced by the mine opening is critical proper support selection. The NIOSH STOP database contains load-displacement laboratory test data for most commonly used standing supports. …
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Computational Modeling and Validation of the Deformation and Failure Response of Human Metastatic Vertebrae
… and architecture, which weakens the vertebra's load carrying capacity and puts the patient at high risk of skeletal adverse events (SAE), such as pathological vertebral fractures (PVF) and spinal cord compression. Therefore, there remains a strong need for the accurate assessment of fracture …
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Asymptotic post-buckling analysis by Koiter's method with a general purpose finite element code
… leading to a great decrease in buckling load. Koiter showed that the effect of initial imperfections is largely determined by the initial post-buckling behavior of the perfect structure. The present work seeks to implement Koiter’s method of asymptotic post-buckling analysis on a finite …
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Study of Drift Limits for High-Strength Concrete Columns
… to calculate the critical coordinates for the load-displacement response is presented.
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Crack path selection in microstructurally tailored inhomogeneous polymers
… boundary properties. Each microstructure was loaded in a single edge notch tension (SENT) configuration, and the resulting strain fields were recorded using digital image correlation (DIC). Depending on the applied load and the local microstructure, different crack paths occur, such as the …
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The behaviour of modern flexible framed structures undergoing differential settlement
… consisting of flat RC slabs, RC columns and non-load bearing internal and external partitions and facades. These modern framed structures are more flexible than older conventional buildings with load bearing walls and are less susceptible to differential settlement damage. The use of conventional …
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DEM Study of a Single Stone Column in a Clayey Stratum
… were conducted to reproduce field plate load tests performed on small circular foundation resting on single aggregate piers in order to evaluate the effects of these factors on the global performance of aggregate columns. The numerical results demonstrate that incorporating the gradation, …
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A unified library of nonlinear solution schemes: An excursion into nonlinear computational mechanics
A library of nonlinear solution schemes including load, displacement, arc-length, work, generalized displacement, and orthogonal residual control are cast into a unified framework for solving nonlinear finite element systems. Each of these solution schemes differs in the use of a constraint …
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Effect of non-linear loading paths on sheet metal fracture : large strain in-plane compression followed by uniaxial tension
… prior to ductile fracture in most types of loading of sheet metal. In order to measure the local state of stress and strain, a hybrid experimental and numerical method is tested. The Finite Element model can accurately predict the load displacement relation using a quadratic Hill 48 yield …
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Material characterization of high-voltage lithium-ion battery models for crashworthiness analysis
… impacted or compressed while measuring punch load, displacement, cell voltage, and surface temperature until an internal short circuit was detected, followed by a rise in surface temperature. Results were used to either refine the constitutive cell properties or validate finite element models. …
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Design of a prototype personal static var compensator
… (PSVC) for distributed var control through load power factor correction. The PSVC demonstrates the two key benefits of power factor correction, which include decreased power costs and increased system capacity. The PSVC prototype consists of two types of branches---a TSC branch and a TCR …
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Effect of temperature on the fracture behavior of lead-free solder joints
… equipped with an environment chamber. The load-displacement behavior corresponding to crack initiation and the subsequent toughening before ultimate failure and the displacements near crack tip are recorded and used to calculate the fracture energy release rates. The fracture surfaces and …
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Equilibrium of a shallow arch subjected to PZT actuators and a deadweight load
… circular, cylindrical panel under a midspan line load and induced strain actuation is presented. The panel is a laminate of piezoelectric material perfectly bonded to the convex and concave surfaces of a core of passive material. Since the curved edges are free and the straight edges are pinned a …
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A finite element study of the effects of residual stress on conical indentation
… applied as a boundary condition, and indentation load-displacement curves were generated and analyzed according to various accepted methods for measuring hardness and modulus. The results of the study show that the standard methods by which hardness and elastic modulus are measured can lead to …
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A Model for Prediction of Fracture Initiation in Finite Element Analysis of Bolted Steel Connections
… and two top-and-seat angle connections. Load-displacement curves for the full scale models were found to coincide with experimental results.
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Analysis of the deflections, vibrations, and stability of leaning arches
… behavior of leaning arches, particularly the load-deflection and load-frequency relationships, and to provide a basis for future design guidelines. In this study, vertical arches of different shapes and load combinations are analyzed in order to compare with previous results given by other …
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Quantitative Comparison: Equine Genital Tissues Under Uniaxial Loading
… vagina, penis, and scrotum. The results include load–displacement data, stress–strain behavior, and tangent moduli for the penile sheath, vaginal canal, and scrotum, with strain measured in both the CD and longitudinal direction (LD). Findings indicate that vaginal and scrotal tissues exhibit …
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Phase-field modeling of fracture: regularization length insensitivity and mixed mode ductile fracture
… in the prediction of accurate crack paths and load-displacement curves for ductile materials. In this Ph.D. research, in contrast to previous phase-field fracture models, we proposed a novel approach to attain a length-scale insensitive mechanical response, which considers a continuous …
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Phase-field modeling of fracture: regularization length insensitivity and mixed mode ductile fracture
… in the prediction of accurate crack paths and load-displacement curves for ductile materials. In this Ph.D. research, in contrast to previous phase-field fracture models, we proposed a novel approach to attain a length-scale insensitive mechanical response, which considers a continuous …
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