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 21 for “"Simulation-based design"”.
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Simulation-based Design with Polynomial Ridge Approximations
Computer simulations continue to have an increasing importance in engineering design. Despite advances in computing power, simulation models that capture complex physical phenomena at high fidelities remain intractable for design tasks requiring repeated evaluations of quantities of interest. In …
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Simulation-Based Design Under Uncertainty for Compliant Microelectromechanical Systems
… systems (MEMS) has led to a greater emphasis on simulation-based design for increasing first-pass design success and reliability. The use of compliant or flexible mechanisms can help eliminate friction, wear, and backlash, but compliant MEMS are sensitive to variations in material properties and …
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Knowledge composition methodology for effective analysis problem formulation in simulation-based design
In simulation-based design, a key challenge is to formulate and solve analysis problems efficiently to evaluate a large variety of design alternatives. The solution of analysis problems has benefited from advancements in commercial off-the-shelf math solvers and computational capabilities. However, …
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Simulation-based design of integrated public transit and shared autonomous mobility-on-demand systems
… systems. First, this thesis proposes a simulation-based approach to the design and evaluation of integrated autonomous vehicle and public transportation systems. We highlight the transit-orientation by respecting the social-purpose considerations of transit agencies (such as maintaining …
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Finite element simulation based design and optimization of electric motors for EV/HEV traction application
… and curtailing greenhouse gas emissions. A design for an electric vehicle does not just requires the electrical system to be efficient in particular; but it is required to perform in all extreme cases of thermal and mechanical stresses. And it is made possible by all the research and …
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Application of Computational Fluid Dynamics as a Simulation-based Design Guide in a Microfluidic 3D Living Cell Array (3D LCA) Device
… provides a reinforcement to efficiency in the design of aircrafts or for understanding the flow through pipes. A similar approach can be taken towards microfluidics, where traditionally devices have been designed based on experience or physiological replication, and a CFD simulation is shown …
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Simulation methods for the development of modular strategic guidance systems
The traditional approach to simulation-based system design results in a stovepiped development process where subsystems are developed independently and integration requirements are then levied on the system architecture. For applications like the MK6 Life Extension program, where a modular system …
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Analysis of column interconnects for wafer level packages
… interconnect for wafer level packages. First, a simulation-based design optimization process was established based on ABAQUS and Minitab. This process integrated finite element simulation, design of experiment and numerical optimization, generating a systematic and efficient method that can study …
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Automated Level Selection for Design-Aimed Simulation
<p>Simulation-based design provides a comprehensive environment to evaluate products without building physical prototypes. If the simulation environment is able to select appropriate model levels automatically for different stages of the incremental design, the simulation can be performed without …
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Modelling and simulation of combustion of dilute syngas fuels in a CFR engine
… conditions, is a significant challenge when simulation-based design of an engine is intended. The following thesis describes the development of a predictive model to simulate the combustion of a dilute syngas fuel in a Cooperative Fuel Research (CFR) spark ignited engine. The laminar flame …
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Controllable magnetic systems for minimally invasive surgery
This thesis covers the design and development of a controllable electromagnetic compression medical device that addresses the need for control of magnetic attraction in the clinical setting. This work outlines the design of a magnetic medical device to be used for anchoring or compression, namely …
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Using Ontologies to Support Interoperability in Federated Simulation
A vast array of computer-based simulation tools are used to support engineering design and analysis activities. Several such activities call for the simulation of various coupled sub-systems in parallel, typically to study the emergent behavior of large, complex systems. Most sub-systems have their …
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Design of robotic quadruped legs
… of a sound mechanical system. The leg designs presented here are based on the development of four design principles from both biological systems, dynamic simulations and previous research. These principles suggest that a leg design should: minimize passive mechanical impedance, minimize …
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Mechanics of amorphous polymers and polymer gels
… against corresponding results from numerical simulations. Amorphous chemically-crosslinked polymers form a relatively new class of thermallyactuated shape-memory polymers. Several biomedical applications for thermally-actuated shape-memory polymers have been proposed/demonstrated in the recent …
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Prediction And Allocation Of Live To Virtual Communication Bridging Resources
… shared. Experimental results from discrete event simulation analysis and prototype functionality testing accompany recommendations for future investigation. If the methods and technologies summarized are implemented, an estimated equipment savings of 25%-53% and an estimated cost savings of …
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Time-dependent reliability methodologies with saddlepoint approximation
… to predict the time-dependent reliability in the design stage, given possible catastrophic consequences of a failure. Although extensive research has been conducted on reliability analysis, estimating the reliability accurately and efficiently is still challenging. The objective of this work is to …
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Model based control optimisation of renewable energy based HVAC Systems.
… The main reason for this is a poor system design combined with suboptimal control. Often several non optimised components, each separately controlled, are put together to form a ‘cooling system’. To overcome these drawbacks several attempts are made within IEA task 38 (International Energy …
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Computational Tools for 3D Printing and Woven Textile Design
… These novel techniques call for new tools to aid design and new algorithms to process the input and generate machine instructions for fabrication. This dissertation includes three works on computational tools for wireframe printing and 3D weaving. In the first work, we present a method for …
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Exploring Temporal and Spatial Correlations on Circuit Variables for Enhancing Simulation-based Test Generation
… complexity and size of current circuit designs have made testing and verification major bottlenecks in the design flow of VLSI (Very Large Scale Integrated) circuits. Statistics show that more than 70% of the design effort can be spent on functional verification and manufacturing …
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Simulation in Automated Guided Vehicle System Design
… disadvantages of AGV-systems. The AGV-system design is however a multi-faceted problem with a large number of design factors of which many are correlating and interdependent. Available methods and techniques exhibit problems in supporting the whole design process. A research review of the work …
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