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 19 of 19 for “"force transfer"”.
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Dynamic response of simply supported beams excited by piezoelectric actuators
… in active vibration control; however, the force transfer mechanism by which they interact with the structure to which they are attached needs to be understood to optimise the efficiency of their use. Various modelling approaches have been used over the past six (6) years to try and …
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Global and local performance of prestressed girder bridges with positive moment continuity detail
… and some live load positions, and on the force transfer mechanisms through the diaphragm. The study utilized different approaches including analytical models for temperature evaluations and finite element models for structural assessments. Field data from a bridge using the new detail were …
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Ankle Mobility and Lower Extremity Functional Stability Assessment and Intervention for Collegiate Baseball Pitchers
… injuries, often associated with impaired force transfer through the kinetic chain. Limited ankle dorsiflexion may alter stride length and increase injury risk. Purpose: This study aimed to establish a screening tool to identify drive leg ankle imbalances in collegiate pitchers and examine …
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Development of lightweight FRP bridge deck designs and evaluations
… The study found that local resistance and force transfer across the joints were the areas of potential improvement. The remainder of the study showed adequate performance of the decks.
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Comparison of design methods for shear in reinforced concrete beams
… two basic methods used to analyze and design reinforced concrete members for shear, the American Concrete Institute Code method (used in the United States) and the truss model method (used in different European Codes and in the Canadian Codes). The ACI Code method is a semi-empirical solution …
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The Seismic Behavior of Steel Structures with Semi-Rigid Diaphragms
… diaphragms affects the efficiency of in-plane force transfer mechanisms, resulting in different global ductility and strength demands. Rigid diaphragm structures exhibit higher global strengths as well as higher torsional rotation capacity because of the infinite in-plane stiffness of the …
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Hydrodynamic Analysis of Arrays of General Bodies
… Resulting velocity potentials, excitation forces, and other hydrodynamic quantities were then processed using a partial wave mathematical model to determine each body’s unique diffraction and force transfer matrices. These characteristic quantities were then input into a multiple wave …
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Improved Vehicle Dynamics Sensing during Cornering for Trajectory Tracking using Robust Control and Intelligent Tires
… road surface, are responsible for generating the forces for maintaining the vehicle pose, orientation and stability of the vehicle. Additionally, the on-board advanced chassis control systems require estimation of these tire-road interaction properties for their operation. Extraction of these …
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Seismic Performance of Column-to-Drilled-Shaft Connections in Reinforced Concrete Bridges
… shaft foundations are often used to support reinforced concrete bridge columns founded in soft soils or in locations where a small footprint is desired. Increasingly, the shaft is being built with a diameter larger than that of the column, to allow tolerance in the column placement and to …
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Retrofitting beam-to-column joints for improved seismic performance microform
… the 1970's, most codes for the design of reinforced concrete structures did not include provisions for ductility during seismic events was not prevalent in most codes. The guidelines that did exist were minimal, and often left a fair amount of room for interpretation by the design engineer. …
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Renaissance robotics : novel applications of multipurpose robotic arms spanning design fabrication, utility, and art
… and environmental properties without mechanical force transfer was explored. Coined immaterial fabrication,t his fabrication category captures methods that do not fall within the definitions of additive, subtractive, or formative processes. Work produced in this area includes a volumetric sensing …
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The Behaviour of Plank (Tongue and Groove) Wood Decking Under the Effects of Uniformly Distributed and Concentrated Loads
… used in post and beam timber construction to transfer gravity loads on roofs and floors. In 2010, The National Building Code of Canada changed the application area of the specified concentrated roof live loads from 750 mm x 750 mm to 200 mm x 200 mm. The change was made to better reflect the …
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Development and Behaviour of a New Long-Span Composite Floor System
… By providing a continuous medium for internal force transfer, the steel sheet offers some significant advantages over conventional shear reinforcement. It is envisaged that the floor unit would be produced as a precast, top-hung element that can be installed with top of concrete level on …
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Design and characterization of soft continuum manipulators using fiber reinforced actuators
… This dissertation utilizes pneumatic fiber-reinforced actuators as the basic building block for designing soft robots. An insight into the design of SCAs by exploiting asymmetry in the fiber angles (local scale) and by combining different fiber-reinforced actuator building blocks in an …
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Track-Bridge Interaction Effects in Heavy Haul Railway Viaducts
… to as track-bridge interaction results in force transfer between the track and the bridge. With the demand to increase freight haulage on heavy haul railway lines intensifying to meet mineral export demands, there is a need to understand the manifestation of rail bridge interactions in …
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Seismic Performance of Bridge Column-Pile-Shaft Pin Connections for Application in Accelerated Bridge Construction
… columns to pile-shafts to reduce the overall force demand in the integral bridges, leading to smaller and more economical foundations. Additionally, prefabrication of structural elements facilitates accelerated bridge construction (ABC), which could improve the quality and economy of project …
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Mechanical and optical characterization of force induced chemical reactions in solid state linear polymers
… chemical, or electrical potential. By linking force-sensitive chemical species (mechanophores) into polymer backbones, mechanical force can drive chemical reactions. Mechanophores have been developed with potential as damage sensing, self-healing, and self-reinforcing materials. This research …
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An Analytical Study on the Behavior of Reinforced Concrete Interior Beam-Column Joints
Reinforced concrete (RC) moment frame structures make up a notable proportion of buildings in earthquake-prone regions in the United States and throughout the world. The beam-column (BC) joints are the most crucial regions in a RC moment frame structure as any deterioration of strength and/or …
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Hooked Bar Anchorages and their Use in Noncontact Lap Splices
Lap splices are used in reinforced concrete structures to transfer tension forces across discontinuous reinforcing bars to allow for continuity of load path in structural elements. Lap splices of straight reinforcing bars present a number of disadvantages when used in connections of large precast …