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 20 for “"inverse analysis"”.
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Material Modeling Through Inverse Analysis
SelfSim is also introduced to extract Red Blood Cells (RBCs) material stress-strain behavior from measurements of forces and displacements obtained by optical tweezers techniques. Deformation characteristics of RBCs are closely linked to disease (e.g. malaria) progression and hold promise as a tool …
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A hybrid technique to extract cohesive fracture properties of elasto-plastic materials using inverse analysis and digital image correlation
Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2012-05-19T10:00:18Z
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Numerical Modelling of Corrugated Paperboard Boxes
… (homogenised) properties obtained through inverse analysis based on targeted experiments. The box is partitioned into three governing regions: panels (flat, uncreased walls), vertical creases (fold lines between adjacent side panels), and horizontal creases (fold lines near the top and …
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Seismic site response analysis and extraction of dynamic soil behavior and pore pressure response from downhole array measurements
Seismic site response analysis is commonly used to predict ground response due to local soil effects. Advancements in the knowledge of shear-induced excess pore pressure generation has led to the development and implementation of pore pressure response models for site response analysis with …
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Thermal Property Determination Using Optimization of One-side Known Radiant Exposure
… could not meet the necessary precision. Using an inverse analysis technique to solve for the thermal conductivity and specific heat capacity, the thermal properties of composite materials can be determined. These thermal properties can then be used in a rapid heat damage assessment and failure …
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Modelling to predict the reliability of solder joints
… methods. The use of FEA (Finite Element Analysis) to model creep along with a fatigue law to predict lifetime appears to be the most widely used and validated technique at present. The FEA discretisation of elasticity problems is derived using the principle of minimum potential energy and …
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Integrated computational-experimental soil behavior characterization from direct simple shear tests on Boston Blue Clay
… soil model. This study utilizes an evolutionary inverse analysis approach to directly extract non-uniform stresses and strains within an undrained DSS test specimen, and which is subsequently to K0 consolidated-undrained direct simple shear (CK0UDSS) tests on Boston Blue Clay (BBC). The extracted …
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Characterization of Ultra-High Performance Concrete Tension Behavior Using Different Test Methods
… This thesis work provides a comprehensive analysis of the experimental investigation, test methodologies, calculations, and the correlation between the tension behavior computed from both test methods. For this, a total of 50 UHPC specimens were constructed, including 10-2 in. square prisms …
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A study of isostatic framework with application to manipulator design
… includes methods to perform forward and inverse kinematic analysis, velocity and acceleration analysis, singularity analysis and workspace analysis. The closed-form solution to the inverse analysis presented herein is a major breakthrough in the development of the double-octahedral …
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INVERSE METHOD FOR DETERMINING TEMPERATURE DISTRIBUTION IN MACHINING
… and the workpiece. The present problem is an inverse heat conduction problem which is much more difficult to solve than the direct one due to its ill-posed nature, that is, small changes in the measured interior temperatures will result in big errors in the estimated boundary temperatures. The …
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Polypropylene fiber reinforced concrete in railway crossties
… to determine tensile behavior of FRC using an inverse analysis approach and a back calculator tool. Preliminary tensile stress-strain models were established which can be used to define constitutive properties for concrete when using finite element analysis (FEA) to analyze experimental …
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Building Patient-Specific Models of the Heart to Study Cardiac Growth and Remodeling
… vivo cardiac MRI, kinematic growth modeling, and inverse finite element method to quantify tissue level growth. Tested on in vivo data of swine models, this approach showcases the potential of non-invasive measurement of microstructural growth properties. It also highlights two potential areas of …
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Decoding Seismic Hazard Enigmas via Next-Generation Paleoseismic Analyses: With Application to the Cascadia Subduction Zone and Beyond
… studies have been performed widely, existing inverse-analysis techniques (i.e., to constrain the causative earthquake magnitude and/or ground motions) have several shortcomings. Foremost, they are generally deterministic and require that the location of fault rupture be known, when in reality …
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Analytical modeling and simulation of metal cutting forces for engineering alloys
… through an opened-up deformation zone. Oxley's analysis of machining is extended to the application of various engineering materials. The basic model is extended to the simulation of end milling process and validated by comparing the predictions with experimental data for AISI1045 steel and …
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Some problems in hot rolling of al-alloys solved by the finite element method
… coupled FEM program FORGE3 V5.3. The inverse analysis method is adopted to obtain the friction coefficient and heat transfer coefficient. The distribution of pressure, equivalent strain, the stress and damage in the roll gap in breakdown rolling are discussed. The changes of …
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Next generation triaxial apparatus using combined computational-experimental testing framework
This Dissertation was approved for publication on 2017-04-21 at 17:24.
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Pore-water pressure accumulation under dynamic loadings
… pressures calculated from the numerical analysis are compared with previous analytical methods to how that empirical correlations can be used for estimating seismically induced pore-water pressures when performing a complex seismic numerical analysis is not feasible. Flow failure …
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Radio Propagation Through Density Irregularities in the Auroral Ionosphere
… Auroral GPS Array (SAGA). We perform an inverse method to derive the parameters describing the ionospheric irregularities by fitting the power spectral density (PSD) of the observed phase with the simulated phase. We found that the E-region density irregularities have rod-like shapes, …
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Statistical analysis of the vertical human walking forces and human structural interaction effects
… through an experimental campaign and analysis, to reduce the error between predicted and monitored results. An innovative method of extracting walking load parameters encompasses all information within the close frequency range of the walking frequency. A representative interpolation …
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Impacts analysis for inverse integrated assessments of climate change
… Dabei stellt der 'Leitplankenansatz' eine 'inverse' Herangehensweise zur Unterstützung klimapolitischer Entscheidungen dar, bei der versucht wird, die Gesamtheit der klimapolitischen Strategien zu bestimmen, die mit einer Reihe von zuvor normativ bestimmten Mindestkriterien (den sogenannten …