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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 28 for “"Simple beam"”.
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Response of a Flexibly Supported Simple Beam to Dynamic Loads
Made available in DSpace on 2014-12-05T17:37:05Z (GMT). No. of bitstreams: 1 5904580.pdf: 3583591 bytes, checksum: ee570cbf27a520b4a58314ace2cfbd1f (MD5) Previous issue date: 1959
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Characterizing the mechanical properties of drop stitch inflatable structures
… of drop stitch material was fabricated and simple beam bending tests were performed at different pressures. This data was then used to invalidate a developed model for the deflection of the sample. High standard deviations indicate that the pressure inside the tested sample was changing …
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A study of modal-space control of a beam-cable structure: experiment and theory
… known as modal-space control, on a relatively simple beam-cable structure. The control was implemented in analog form and provided modal viscous damping in each of the three modes of the structure. Transient response to initial conditions was analyzed experimentally and theoretically. Control …
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Analysis, Design and Testing of a Wind Tunnel Model to Validate Fiber-Optic Shape Sensing Systems
… lattice method called Tornado combined with simple beam theories. The beam theories were linear beam theories and the stiffness of the composite bodies was supplied by static testing of the test articles. The code was iterative in that it ran the VLM code to estimate the forces and moments on …
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Long-term performance of bonded concrete overlays subjected to differential shrinkage
… that existing models, which are based on simple beam theory, are deficient in modelling overlay strains in a realistic manner. The degree of overlay restraint was found to depend far less on relative sectional dimensions of substrate and overlay as commonly assumed. Based on fundamental …
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Computational modeling of crack initiation in cross-role piercing
… of porosity in tile specimen is studied. Other simple ductile fracture criteria that are proposed in literature are also implemented. An interface model for fracture using the discontinuous Galerkin framework combined with a cohesive fracture law is implemented. This approach and its advantages …
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Integrated structural design, vibration control, and aeroelastic tailoring by multiobjective optimization
… variables were derived for a finite element beam model of the structure and constant feedback gains determined by Independent Modal Space Control. Pareto optimal designs generated for a simple beam and a tetrahedral truss demonstrated the benefit of solving the integrated structural and …
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Plane frame element addition to the MESS finite element program
… The element is tested for accuracy relative to simple beam theory and by comparison with results generated using another finite element program. In both cases agreement to within 6 significant figures was achieved. Because the intended use is educational, a survey of its benefit as a design aid …
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Strength of beam-columns in flexibly connected steel frames.
… frames are reported. It is demonstrated that all beam to column connections have an inherent degree of stiffness and that their moment-rotation characteristics are non-linear. The load carrying capacity of columns, confined to buckle in-plane, is shown to be enhanced considerably by the resistance …
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Large-scale testing of a steel-concrete composite floor system under column loss scenarios
… steel gravity framing systems composed of steel beams and girders with composite concrete slab on steel deck. Steel simple beam-column connection tests were conducted at the University of Washington, steel-concrete composite slab tests were conducted at Purdue University, and complete floor …
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Material, acoustic, and mechanical properties of mosquito and midge antennae
… to sound. It was revealed that, rather than a simple beam of uniform cuticle, the antennae of the insects studied had patterns and distributions of hard and soft ring elements along the length of their antennae. These properties were simulated with FEM and showed that they can strongly …
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Finite element model of thermoelastic damping in MEMS
… expressions for thermoelastic dissipation in a beam model. The governing equations of thermo elasticity dictate that the amount of damping that a resonator undergoes is a function of both material properties as well as device geometry. Damping will become greatest at operating cycle times that …
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Establishment of an experimental method for a grooved composite subjected to out-of-plane contact loading
… boundary conditions, specimens fail in a simple beam shear mode as determined from the overall structural response of the specimen, thereby indicating that this configuration is not appropriate for the primary design goal. Thus, the rigid backface boundary condition is chosen and verified …
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An attempt to quantify errors in the experimental modal analysis process
… that result from a typical modal test. Using a simple beam with free-free boundary conditions simulated, three different modal tests are performed. Each test differs from the other chiefly in the excitation method and FRF estimator used. Using finite element models as the reference, correlation …
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Crack Detection in Aluminum Structures
… actuators and sensors. The structures are a simple beam and a more complex lug element used in aircraft applications. The approach suggested here is to use the impedance and vibration methods to detect crack initiation and then to use the proposed stress intensity method to measure the stress …
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A study of fiberglass-reinforced plastic for reinforcing concrete bridge decks
… FRP reinforcing materials were obtained. Simple-beam test specimens were designed and built. The procedure is described, and experimental results are presented and analyzed. Conclusions are drawn and recommendations for future work are outlined. This investigation provides first-hand data …
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An experimental study and finite analysis of punching shear failure in steel fibre-reinforced concrete ground -suspended floor slabs
… tension stiffening behaviour of SFRC based on a simple beam bending test and a statistical model developed in this research, this constitutive model was used later on in the modelling of the SFRC slabs using FEA. In the preliminary FEA, sufficient information for the size and the design of test …
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An investigation into the usefulness of a method of analysis for straight, uniform-section, box-girder bridge decks with side cantilevers
… of analysis, in the form of an extension of simple beam theory, which is suitable for application to straight, rectangular, single-cell, uniform-section concrete box-girder bridge-decks with side cantilevers. This method only requires a calculator for execution and if a computer is used, …
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Numerical Methods for Predicting the Dynamic Crushing Response and Energy Absorption of Composite Aluminum Honeycomb Sandwich Structures
… of the response was checked for accuracy using a simple beam theory. The analysis suggests that incorporating unbonded zones into the sandwich structure will change the failure mode from general buckling to face wrinkling, which effectively lowers the failure strength while not sacrificing energy …
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Mechanics of jammed media used as a structural element
… the mechanics under which jamming can occur a simple model was created. This model looks into the behavior of jammed structures subjected to three point bending. It does so by examining the forces between the individual particles and using simple beam bending mechanics. A downward trend was …
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