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 17 of 17 for “"Mechanical Simulation"”.
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Mechanical Simulation of Articular Cartilage Based on Experimental Results
… in order to predict articular cartilage (AC) biomechanical properties before and after growth. Previous research has noted limitations in the CGFEM such as model convergence with growth periods greater than 12 days. The main aims of this work were to address these limitations through (1) …
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In situ calibration for load cells in bipedal 3D printed robot utilizing Computer-Aided Design model
… carefully. This research project utilizes mechanical simulation to calculate the known force values acting on the load cells without taking them out of the robot system. Then these force values are used for the calibration process. In this thesis, the in situ calibration method will be …
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Run-time parallelization: A framework for parallel computation
… of irregular, dynamic applications are complex simulations such as SPICE for circuit simulation, DYNA-3D for structural mechanics modeling, DMOL for quantum mechanical simulation of molecules, and CHARMM for molecular dynamics simulation of organic systems. Therefore, since irregular programs …
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Optimal trajectories for fast quantum harmonic transport
… but does not require an expensive quantum-mechanical simulation of the ion dynamics. Furthermore, we prove the convexity of this cost function under easily satisfied conditions in a Fourier Series parameterization of the problem. We then numerically optimize the cost function to discover …
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On the topological properties of the vibrations of solids
… in solids. The state-of-the-art quantum mechanical simulation techniques are presented first to accurately describe the band structures of electrons and vibrational spectra of nuclei for topological analysis. Two concepts are introduced to investigate the non-trivial band crossing in the …
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Superlattice-source nanowire FET with steep Subthreshold characteristics
… a superlattice using a self-consistent quantum-mechanical simulation environment. In particular, the effect of transversal confinement on the band structure of a superlattice that occurs in a nanowire has been studied. We show that in order to obtain single-subband conduction, semiconductor …
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Degradation study of AIGaN/GaN HEMT through electro-thermo-mechanical calculations and thermo-reflectance measurements
… it is necessary to consider the electrical, mechanical and thermal properties of the operating AIGaN/GaN transistors. Since AIGaN and GaN are both piezoelectric materials, the coupling among electric field, lattice heating and mechanical characteristics gives rise to large changes in strain …
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CO₂ geosequestration in the Lakota Formation, Powder River Basin, WY, USA
… formation evaluation, seismic data analysis, geomechanical modeling, rock physics analysis, and thermo-hydro-mechanical simulation within the target reservoir. Various datasets were utilized during the evaluation, including geophysical logs, mud reports, drilling reports, drill stem tests, …
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Modeling of shell forming by line heating
… an FEM model for three dimensional thermo-mechanical simulation of the process of shell forming by line heating. Since the heat flux is focused on a small area under the heat source, a rezoning technique is developed to reduce computation time in three-dimensional numerical simulation. This …
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Investigation of DNP mechanisms : the solid effect
… DNPsim, a program designed for easy quantum-mechanical simulation of basic DNP experiments, combined with the flexibility to customize simulations for more advanced experiments and mechanistic studies. Using these tools, we develop a theoretical framework for the solid effect DNP mechanism, …
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Integrating Structural Fire Analysis with Hybrid Fire Testing: A Framework for Enhanced Stability, Software development and Full-Scale Evaluation.
… tests. Comparison with whole-structure numerical simulations confirms that HFT provides a more realistic assessment of CFST behaviour and failure mechanisms under fire. Third, to improve predictive modelling capabilities, an explicit transient thermal strain model for high-strength concrete is …
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An Aero-Thermo-Chemo-Mechanical Coupling Framework for the Analysis of Hypersonic Ablative Thermal Protection Systems
… coupled physical phenomena through multi-physics simulations, the management of the disparate spatiotemporal scales associated with the fluid and solid responses, and establishing a reliable numerical model able to predict the response of ablative materials exposed to extreme gradients—to name a …
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Spectroscopic exploration of conformal heterogeneity in an amorphous polyphenylene-vinylene derivative
… spectra using a time-dependent quantum mechanical simulation to reproduce experimental observations. Coupling of electronic processes to vibrational modes in organic photovoltaics both helps and hinders function. It broadens absorption and emission spectra, increasing the ability to …
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Atomistic and mesoscopic simulations of heat transfer across heterogeneous material interfaces
… along with the development of high-fidelity simulation methods have provided a renewed interest in the fundamental physics of heat transfer across interfaces. Miniaturized electronic devices and nanostructured materials for energy applications are among technologies that would benefit from a …
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Adaptive control of coherent soft X-rays
… initial electronic state leading to less quantum-mechanical spreading of the electron wavepacket during continuum propagation. A new experimental scheme has been worked out, using the method of molecular wavepacket generation as a tool to enhance the harmonic conversion efficiency in `pump--drive' …
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Development of a Heavy Truck Vehicle Dynamics Model using Trucksim and Model Based Design of ABS and ESC Controllers in Simulink
… addition to this, a Hardware-in-the-Loop (HIL) simulation of an Anti-lock Braking System (ABS) for a heavy truck was performed using dSPACE. TruckSim, developed by Mechanical Simulation Corporation (MSC), was used to model the vehicle dynamics. The tractor was equipped with disc brakes and the …
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Thermomechanische Modellierung eines Reaktordruckbehälters in der Spätphase eines Kernschmelzunfalls
… calculated with a thermodynamic model, while a mechanical model is used for the structural analysis of the vessel wall. In the introducing chapters a description is given of the considered accident scenario and the relevant analytical, experimental, and numerical investigations are discussed …