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 “"force prediction"”.
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Analytical model for force prediction when machining metal matrix composites
… The hard and abrasive nature of the reinforcement particles is responsible for rapid tool wear and high machining costs. Fracture and debonding of the abrasive reinforcement particles are the considerable damage modes that directly influence the tool performance. It is very important to …
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The analytical force prediction and dynamic response analysis of the Bristol H25A compressor
… research is to perform an in-depth study of the force components within the H25A compressor along with a computer simulation program and the dynamic response analysis of the compressor internals using the finite element method. The model tor force prediction was created based on the assumption …
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Wave forces on cylindrical piles and pile groups : a critical review
… a critical review of methods of predicting wave forces on vertical piles or groups of piles. It assigns different force prediction theories to different situations or flow regimes and analyses their advantages and disadvantages. The thesis is split into two sections: Section I reviewing the force …
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Mechanistic modeling of cutting forces in wavy-edge bull-nose helical end-milling of Inconel 718 under different cooling-lubrication strategies
… of the development of a mechanistic cutting force prediction model for the wavy-edge bull-nose helical endmill (WEBNHE). The mechanistic model was developed to predict cutting force components and the resultant cutting force in high-speed end-milling of Inconel 718 under two cooling …
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Vision-Based Force Planning and Voice-Based Human-Machine Interface of an Assistive Robotic Exoskeleton Glove for Brachial Plexus Injuries
… (BPI). The aim of this research is to develop a force control method, an automatic force planning method, and a Human-Machine Interface (HMI) to refine the grasping functionalities of the exoskeleton glove, thus helping rehabilitation and independent living for individuals with BPI. The …
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Model to Evaluate the Aerodynamic Energy Requirements of Active Materials in Morphing Wings
… model is presented which predicts the force, stroke, and energy needed to overcome aerodynamic loads encountered by morphing wings during aircraft maneuvers. This low-cost model generates wing section shapes needed to follow a desired flight path, computes the resulting aerodynamic …
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Prediction of propulsor-induced maneuvering forces using a coupled viscous/potential-flow method for integrated propulsors
… develops a method to analyze the maneuvering forces on surfaced and underwater vehicles with complex propulsors. The analysis method is developed for general propellers yet has unique applicability to model highly contracting stern flows associated with integrated propulsors. Integrated …
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Identification of Depth -of -Cut Variations and Their Effects on the Process Monitoring for the End Milling Process
… a fully-flexible mechanistic end milling force model is proposed to generate simulated force profiles for the DOC variation estimation. The end mill cutter is discretized as a series of elliptical disc elements. Effective cutter geometries, viz., effective helix angle and effective normal …
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Study of Forces and Dynamic Coefficients in Whirling and Eccentric Labyrinth Seals Using ANSYS-CFX
Labyrinth seal force estimates are important to the prediction of the stability of turbomachinery. The force prediction methods fall into several categories: experiments, bulk flow analysis, and finite volume analysis. Finite volume analysis can be split into two subcategories: self-developed and …
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Unsteady propeller hydrodynamics by Dirk H. Renick.
… to quantitatively predict unsteady propeller forces for modern, multi-blade row, ducted propulsors operating in highly contracting flowfields. Current algorithms provide valuable insight into qualitative trendlines for these modern designs. This thesis has focused on the more accurate …
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Thermo-mechanical modelling of hot flat-rolling of components with curved profiles
… such as, deformation, flow stress, roll force, temperature, etc., should be used, so that new development in each of these areas can be easily incorporated. A deformation submodel, based on the upper bound theorem, is given for the analysis of three-dimensional deformation of the work …
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Barometer-Based Tactile Sensing: Characterization, Processing, and Applications for Dynamic Manipulation
… where detecting contact onset, direction, and force is critical for control and planning. This thesis advances the development of barometer-based tactile sensors for low-force interactions, building upon prior work from the Biomimetic Robotics Lab. Previous work demonstrated that neural …
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Development of a corn stover yield monitor
… with load cells to measure the impact force of the corn stover on the impact plate. Instrumentation methods for the impact plate were evaluated to determine the most effective method to instrument the impact plate to measure the impact force of the stover.</p> <p>Field testing was …
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The effect of reinforcing soil inclusion on offshore pipeline ploughs
… plough to encounter some sort of fibrous or reinforced soils on the seabed. Not anticipating the plough encountering fibrous or reinforced soils on the sea bed could prove to be extremely costly as in some cases, numerous multi passes have been needed to achieve the targeted trench depth when a …
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Experimental Determination of Required Lateral Restraint Forces for Z-Purlin Supported, Sloped Metal Roof Systems
… for predicting required lateral restraint forces in Z-purlin supported, sloped metal roof systems under gravity loads. A proposed prediction equation, relying heavily on engineering principles, has been developed because the current provisions in the specification are empirical and based on …
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Virtual five-axis flank milling of jet engine impellers
… found to generate more accurate maps. A cutting force prediction model for five-axis flank milling is developed. This model is able to incorporate five-axis motion, serrated, variable-pitch, tapered, helical ball-end mills and irregular cutter-workpiece engagement maps. Simulated cutting forces …
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Evaluation of Markerless Motion Capture to Assess Physical Exposures During Material Handling Tasks
… the feasibility of predicting dynamic hand forces was determined, using alternative measures, such as kinematics from MMC and/or in-sole pressure systems, coupled with a machine learning algorithm. Finally, in the third study, we systematically evaluated MMC for assessing biomechanical …
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Investigation of Machinability and Dust Emissions in Edge Trimming of Laminated Carbon Fiber Composites
The use of carbon fiber reinforced plastic (CFRP) systems for product structures has been steadily increasing because of superior material properties, including high strength, low weight, and corrosion resistance. CFRP parts may be molded to near net-shape geometry; however, machining operations …
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Model, Design, and Control for Power Conversion in Wave Energy Converter System
… circuit model shows discrepancies in power and force prediction in time-domain under irregular wave conditions. A model that can bring the multiple fields together, and provides an accurate prediction from irregular wave dynamics and non-ideal PTO mechanism is needed. A methodology that converts …
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