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 97 for “"Struts"”.
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Effect of struts on aeroacoustics of axisymmetric supersonic inlets
… was the standard inlet design where the struts are located immediately upstream of the fan. The new configuration has the struts located 3.3 chord length upstream of the fan. The purpose for relocating the strut position was to reduce the flow distortion and radiated noise level. The …
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Experimental investigation of unsteady fan flow interaction with downstream struts
… the locations of five large downstream support struts. In the present work, these data are thoroughly analysed. Strut-induced pressure amplitudes as measured on the rotor are presented as a function of the downstream strut locations. Unsteady lift and moment are calculated by integrating the …
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Vibration Isolation of a Horizontal Rigid Plate Supported by Pre-bent Struts
… of vibration isolator consisting of two pre-bent struts which are clamped at both ends and intermediately bonded with a viscoelastic filler. The proposed isolation device has the ability to support a relatively large static load with little deflection and offers a low axial resistance under …
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Two Dimensional Analysis of Vibration Isolation of Rigid Bar Supported by Buckled or Pre-bent Struts
… utilizing the post-buckled stiffness of elastic struts (or columns). The advantage of the post-buckled state is that ideally it can support more static load with a relatively small static deflection than traditional vibration isolators such as springs or rubber mounts, but can also exhibit a low …
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Analytical prediction of the unsteady lift on a rotor induced by downstream flow obstructions
… of a rotor, a downstream stator, and downstream struts which support the engine casing. Using the Douglas-Neumann singularity superposition computer program to model the downstream flow obstructions, classical equations of thin airfoil theory are then employed, to compute the unsteady lift on the …
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Έλεγχος του βαθμού ενδοθηλιοποίησης των στεφανιαίων αρτηριών με τη μέθοδο της οπτικής συνεκτικής τομογραφίας σε ασθενείς με ενδοστεφανιαίες προθέσεις που εκλύουν πακλιταξέλη έξι μήνες μετά την αρχική τους εμφύτευση στα πλαίσια οξέος στεφανιαίου συνδρόμου
… κάλυψης και του βαθμού εναπόθεσης των struts ενδοστεφανιαίων προθέσεων που εκλύουν πακλιταξέλη (Infinium, Sahajanand Medical Technologies Pvt Ltd.) 6 μήνες μετά την εμφύτευσή τους στα πλαίσια οξέος στεφανιαίου συνδρόμου με τη μέθοδο της οπτικής συνεκτικής τομογραφίας. Εξ όσων είμαστε σε …
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Thermomechanical Modeling of Oxidation Effects in Porous Ultra-High Temperature Ceramics
… and subsequent shear failure of the inter-pore struts, while shear banding in 70% RVE weakened the struts, which lead to buckling failure. A snapshot oxidation model was then applied to the hexagonal RVEs in place of a transient, diffusion-based oxidation solver. Compressive strain simulations …
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Prestressed cable domes: structural behavior and design
… prestressed cables in equilibrium with vertical struts. Members are stressed purely in axial tension or compression and as a consequence, the materials are used efficiently. Not much has been written about the structural design of cable domes. This study was based on an extensive review of …
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Flows through s-shaped annular, inter-turbine diffusers
… diffusing duct had simple symmetrical aerofoil struts added, which simulated struts required in real inter-turbine diffusers to support inner shafts and supply vital engine services. The total pressure loss developed by the 30% shorter duct was 15% greater that of the longer duct, and when …
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Método dos elementos finitos aplicado ao problema de escavação
… in several steps, 6. preloading of the struts, 7. influence of the temperature on the struts 8. construction of galeries, 9. backfilling. Three applications of the program are presented: a) parametric study of the influence of the temperature on strut loads; b) determination of …
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Analysis of Buckled and Pre-bent Columns Used as Vibration Isolators
… by these vibrations. Using elastically buckled struts may be a viable means to reduce the harmful effects of unexpected vibrations. Post-buckled struts can support high axial loads and also act as springs in a passive vibration isolation system by absorbing or dissipating the energy caused by …
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Noise Reduction in an Axisymmetric Supersonic Aircraft Inlet using Trailing Edge Blowing
… the wakes of upstream fan disturbances such as struts or inlet guide vanes (IGV). The elimination of the wakes will provide a uniform flow field at the engine fan face and reduce noise at the blade passing frequency. The TEB was implemented on six non-uniformly spaced support struts in the …
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Effect of inlet strut length on the stalling characteristics of an axial-flow compressor
… for tests with variable-length upstream casing struts. Two axial strut lengths were tested for their effect on the inlet flow field and stalling characteristics of the compressor under clean and distorted inlet conditions. Data were obtained from one stationary and six blade-mounted …
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Ride and roll performance analysis of a vehicle with spring loaded interconnected hydro-pneumatic suspension
… springs in parallel with hydro-pneumatic struts can help to design realistic interconnected hydro-pneumatic system for vehicle suspensions. In this dissertation, spring loaded hydro-pneumatic suspension, interconnected in roll plane, is analytically investigated for its ride and handling …
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Computational model of local intravascular drug delivery
… the device. Lumenally flowing blood around stent struts was capable of transporting drug to the arterial wall in the presence of both single and multiple configurations of drug eluting stent struts. The extent of blood flow mediated arterial drug delivery depended upon the rate of drug release and …
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Multibranched rangeomorphs from the Ediacaran Mistaken Point assemblage, Newfoundland, Canada
… by fossils displaying multiple parallel struts emerging along one side of an elongate, curved pedicle rod. Morphological and taphonomic evidence suggests that, in life, this organism had two rows of struts, each bearing a rangeomorph frondlet, arranged in an alternating pattern along the …
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Web-based library for student projects/theses and faculty research papers
… (MVC) design pattern using the Jakarta Struts framework and iBATIS Data Mapper framework from Apache Software Foundation, JavaServer Pages (JSP), and MySQL database.
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Web-based library for student projects/theses and faculty research papers
… (MVC) design pattern using the Jakarta Struts framework and iBATIS Data Mapper framework from Apache Software Foundation, JavaServer Pages (JSP), and MySQL database.
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An improved size, matching, and scaling synthesis method for the design of meso-scale truss structures
… desired. However, due to the small size of their struts, these structures can easily have hundreds to thousands of individual struts. As a result, design poses a unique challenge. Current methods approach design of mesoscale lattice structures as a topological optimization problem, treating each …
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Intrinsic variations in geometric properties of nonlinear equivalent strut models for infill-RC frames
… can also change the geometric properties of struts, namely width, location and number of struts in an equivalent strut model. For this reason, recent studies have proposed a case-specific strut modelling approach. In the current study, a macro script available in the literature that can be …
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