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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 73 for “"axial force"”.
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An axial force sensor for a prosthetic knee
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Designing for forces : an early-stage design program for axial-force structures
… that carry most of their load through the axial forces of tension or compression are more materially efficient than standard structures. However, they are not as straightforward to design since the forces in the structure depend on shape. The traditional method of form finding for such …
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ANALYSIS OF FRAME-CORE WALL BUILDINGS CONSIDERING EFFECTS OF AXIAL FORCE AND AXIAL DEFORMATION
The effects of axial force and axial deformation in columns on dynamic characteristics of frame-core wall tall buildings are considered in the present study. The governing equations of motion for the structure are formulated through a continuum approach idealizing the whole structure as a …
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Inelastic Analysis of Reinforced Concrete Beams Subjected to Combined Axial Force, Bending and Torsion
The response of reinforced concrete members subjected to combined loading which includes torsion is investigated theoretically for a static monotonically increasing load. A unified model, which is an extension of the space truss model, is developed to solve this problem for rectangular, circular …
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An Experimentally-Validated V-Belt Model for Axial Force and Efficiency in a Continuously Variable Transmission
… into the magnitude and relationship between the axial forces in the pulleys. This can be used to create an initial design that is more accurate, and possibly reduce the time required for tuning. A CVT dynamometer was constructed to validate the analytical results for efficiency, and this will …
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An investigation into the failure of neat cement cylinders under independently controlled confining pressure, pore pressure, and axial force
… pressure and pore pressure on the ultimate axial compressive strength of neat cement cylinders. In trying to achieve this purpose the ultimate strength, deformation, and volume change of the material have been studied. The test program consisted of a variation in confining pressure and pore …
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Elasto-plastic stress analysis of curved structures with rectangular section
… simple plastic theory in which the effect of the axial force on the formation of a plastic hinge is neglected. In fact this conception is in serious error in some cases, especially when the curved structure is a shallow arch, the stresses developed are apparently governed by the axial force. …
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A nondimensional model for axial digging in granular materials
… into the granular packing and recording the force-depth data. The digger is modeled as a column in buckling; its column effective length factor is calculated. We solve two optimization problems. First, we limit the axial force the digger is allowed to experience and analytically solve for the …
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Use of a triboelectric generator for a tunable wideband energy harvester and a threshold shock sensor
… is a tunable wideband energy harvester. An axial force and amplitude limiter work together to create an energy harvester that can accommodate various frequency sources and have a large operating bandwidth. The addition of the compressive axial force also softens the system, which allows for …
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Effect of Surface Stress on Micromechanical Cantilevers for Sensing Applications
… the free end (Model I), concentrated moment plus axial force acting at the free end (Model II), and uniformly distributed surface force acting along the microcantilever (Model III). Solution to Model I loading is based on the Stoney formula, assuming that the microcantilever is subjected to pure …
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Development Of Lower Extremity Injury Criteria And Biomechanical Surrogate To Evaluate Military Vehicle Occupant Injury During An Explosive Blast Event
… transmit high amplitude and short duration axial loads onto the foot-ankle-tibia region of the occupant causing injuries to the lower leg. The current effort was initiated to develop lower extremity injury criteria and biofidelic biomechanical surrogate to evaluate military occupant injury …
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Seismic Assessment of RC Structures Considering Vertical Ground Motion
… ground motion significantly increased the axial force variation and at several times induced an axial tension force. Moreover, more severe cracking and damage were observed with significant increase in spiral strains when vertical ground motion was included as an input. Based on the …
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Static and Dynamic Analysis of Axially Loaded Wire Ropes
… investigate the static and dynamic behavior of axially loaded wire rope. The longitudinal, torsional, and transverse displacements are determined for a rope which is initially straight in the reference configuration and loaded by an axial force and twisting moment. The static response of wire …
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Compressive Membrane Capacity Estimates in Laterally Edge Restrained Reinforced Concrete One -Way Slabs
… capacity estimate for laterally restrained reinforced concrete one-way slabs is developed for field use. The estimate uses the axial force-moment interaction equations and a ratio for the peak thrust to the slab's axial capacity. The resulting thrust enhanced moment capacities at the support and …
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Cervical Spine Tolerance And Response In Compressive Loading Modes Including Combined Compression And Lateral Bending
… historically been reported by identifying the axial force at the time of injury measured at the base of the neck, however, axial force at failure exhibits variation and this has been attributed to the alignment of the cervical vertebra and the end conditions of test methodology used. Robust and …
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Computed Nonlinear Seismic Response of Reinforced-Concrete Wall-Frame Structures (Dynamic, Analysis)
… of nonlinear analysis for the response of a reinforced-concrete coupled shear wall and/or wall-frame structure subjected to strong earthquate motion without complication in the method itself, yet with reasonable reliability in the computed results. The computed responses of one cantilever column …
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A small strain, large rotation theory and finite element formulation of thin curved beams
… that includes the effect of curvature change on axial force in the incremental equilibrium equations has been developed. The formulation is based on the geometric strains and has the capability of predicting true axial force values in large rotation and curvature problems. This approach can be …
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A numerical study of the effects of leading edge vortex flaps on the performance of a 75° delta wing
… was deflected at 30°. Results for lift, drag, axial force, and pitching moment coefficients are compared with experimental data and show very good agreement. Individual pressure difference coefficients along the wing and flap are also presented and compared with experimental data. Overall, the …
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Dimensionamento de concreto protendido
… the bending plane and is subject to combined axial force and bending, shear and torsion. A few edification constructed at different times were chosen and structurally analysed with the program according to the ultimate strength and working load design methods.
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A Kinematics-Based Testing Protocol to Study the Mechanics of the Human Lumbar Spine
… testing protocol to quantify the axial and shear force components and rotational moment properties of the human cadaveric lumbar motion segment unit (MSU) in response to specific kinematic inputs. Modern, non-fusion spinal devices claim to treat degenerative disc disease better …
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