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.
Results
Showing 1 to 20 of 26 for “"static response"”.
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Static response of cord composite plates
Wire rope reinforced composites have many technologically important applications. These composites are used in automobile tires, conveyer belts, and various military components. This particular combination of materials is especially effective when the composite material needs to be strong in …
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Impact and quasi-static response of cylindrical composite shells
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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An Algorithm and Methodology for Static Response Based Damage Detection in Structural Systems
… is presented in this dissertation that utilizes static response data and Optimality Criterion optimization. Static displacement measurements are used as constraints in the damage detection algorithm that identifies potential areas of damage in structural systems. The research aims to improve upon …
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Research on the Static Response Mechanism of Event Cameras and Their Applications in Static Scenes
… cameras exhibit independent and asynchronous responses at each pixel to changes in brightness. This unique characteristic allows them to have microsecond time resolution and low latency. Currently, event cameras are widely deployed for dynamic vision tasks such as high-speed motion capture. …
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Statistical system identification of structures with flexible joints
… for inferring the model parameters from the static response of the structure. The method is demonstrated by applying it to a simple cube frame structure and a car body. Finally, the two models are compared in terms of their ability to predict static response.
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Static and Dynamic Analysis of Axially Loaded Wire Ropes
The object of this study is to 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. …
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Torsional and flexural control of sandwich composite beams with piezoelectric actuators
… model was developed to predict the static response of composite sandwich beams subjected to loads induced by piezoelectric (PZT) actuators. The model was derived using Reddy's (1984) displacement field for a laminated plate which consists of cubic variation of the in-plane …
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A twenty DOF element for nonlinear analysis of unsymmetrically laminated beams
… evaluated by solving a series of examples on the static response, free vibration, buckling, and nonlinear vibrations of isotropic and laminated beams. For unsymmetrically laminated beams, the nonlinear vibrations were found to have a soft spring behavior for certain boundary conditions as opposed …
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Accuracy analysis of the semi-analytical method for shape sensitivity analysis
… widely used for calculating derivatives of static response with respect to design variables for structures modeled by finite elements, is studied in this research. The research shows that the method can have serious accuracy problems for shape design variables in structures modeled by beam, …
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Large deformation behavior of long shallow cylindrical composite panels
… solution is presented for the large deformation response of a simply supported orthotropic cylindrical panel subjected to a uniform line load along a cylinder generator. The cross section of the cylinder is circular and deformations up to the fully snapped through position are investigated. The …
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A computer implementation of the static and dynamic analysis of induced strain actuated beams
… has been designed and developed for the static and dynamic analysis of induced strain actuated beam structures. A PC-based, user-friendly, menu-driven software program DAISA (Dynamic Analysis of Induced Strain Actuated Beams) has been developed for the analysis of structural response due …
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Computer-Aided Design Software for the Undamped Two-Dimensional Static and Dynamic Analysis of Beams and Rotors
… moments of inertia, could produce varying responses in the each direction of motion. A coupling between the vertical and horizontal motions also exists in rotor systems mounted of fluid film bearings. The computer program called 2DBEAM has been developed to model and provide analyses of …
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Finite Element Modeling of Tow-Placed Variable-Stiffness Composite Laminates
… a laminate with spatially varying stiffness and response. This manufacturing method can also result in overlap regions between adjacent tow paths. In previous research, a closed-form solution was developed to determine the response of these variable-stiffness laminates, but the overlap regions …
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Geometrically Nonlinear Analysis of Axially Symmetric, Composite Pressure Domes Using the Method of Multiple Shooting
… of the linear and geometrically nonlinear static response of "thin" doubly-curved shells of revolution, under internal pressure loading. The analysis is based upon direct numerical integration of the governing differential equations, written in first-order state vector form. It is assumed …
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Large deformation dynamic bending of composite beams
The large deformation response of composite beams subjected to a dynamic axial load was studied. The beams were loaded with a moderate amount of eccentricity to promote bending. The study was primarily experimental but some finite element results were obtained. Both the deformation and the failure …
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Vibration Analysis of a Composite Wing Box with Arbitrarily Shaped Spars and Ribs
… in some instances provide a better vibration and static response than their straight counterparts while reducing the overall mass of the structure. An equivalent continuum plate model of a wing box using energy formulations is proposed at the preliminary design stage to reduce the high and costly …
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Enhanced induced strain actuator performance through discrete attachment to structural elements
… authority is demonstrated by comparing the static response of the discretely attached actuator beam systems with their bonded counterpart systems.
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MICROSCOPIC THEORY OF INFINITE NUCLEAR MATTER AND NON-EMPIRICAL ENERGY FUNCTIONALS
… which are applied to magic nuclei. Then, the static response of nuclear matter is tackled with both DFT and QMC, and a study of the constraints that can be set on the EDF surface terms from ab initio is reported. This thesis outlines a new strategy to ground nuclear EDFs into ab initio and …
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Effect of modal truncation on derivatives of closed-loop damping ratios in structural control
… at all. Since modal expansion of structural response is a generalization of the Fourier series, slow convergence of modal expansion can be expected when the applied loads exhibit discontinuities in time or space. Thus, in a structure controlled by point actuators, slow convergence of …
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Network approaches to understanding the functional effects of focal brain lesions
… data are consistent with a dynamic rather than a static response to the presence of focal lesions. Adolescent brain development demonstrated discrete dynamics with distinct gender specific and age-gender interactions. Network architecture also became more robust, particularly to random removal of …
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