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Showing 1 to 20 of 103 for “"nonlinear response"”.
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Nonlinear Response of Cantilever Beams
The nonlinear nonplanar steady-state responses of cantilever beams to direct and parametric harmonic excitations are investigated using perturbation techniques. Modal interactions between the bending-bending and bending-bending-twisting motions are studied. Using a variational formulation, we …
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Nonlinear response and failure characteristics of internally pressurized composite cylindrical panels
… of an experimental and analytical study of the nonlinear response and failure characteristics of internally pressurized 4- to 16-ply-thick graphite-epoxy cylindrical panels are presented. Specimens with clamped boundaries simulating the skin between two frames and two stringers of a typical …
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Numerical simulation of nonlinear response of moored floating structures to steep waves
… interaction problems based on the fully nonlinear potential theory. The boundary value problem in this model is solved by a finite element method (FEM). The main difference between this method and the conventional FEM is that the complex mesh is generated only once at the beginning of the …
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A Numerical Model for Nonlinear Response of R/C Frame-Wall Structures
A numerical model which includes an element suitable for analysis of walls including stiffness changes due to flexure and shear strains is presented. Sensitivity of calculated results to variations in initial stiffness, amount of viscous damping, and unloading slope of force-deformation curve was …
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Nonlinear Response of Plasmas to Electromagnetic Waves and Surface Wave Propagation in Magneto Plasmas
Made available in DSpace on 2014-12-04T21:03:33Z (GMT). No. of bitstreams: 1 6206250.pdf: 6391604 bytes, checksum: 017cd5b217842464a8dc61c85d4105ea (MD5) Previous issue date: 1962
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A Finite-Element Model to Simulate the Nonlinear Response of Reinforced Concrete Frames With Masonry Filler Walls
Made available in DSpace on 2014-12-10T22:22:08Z (GMT). No. of bitstreams: 1 7412200.pdf: 4811218 bytes, checksum: b8fe52ffd115dfdee7e22fbf88b0b13f (MD5) Previous issue date: 1973
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Modeling the coupled rotor/fuselage response of the H-3 Sea King utilizing the NPS full nonlinear response
Adapting the Naval Postgraduate School full nonlinear simulation model of coupled rotor/fuselage response to the 11-3 Sea King, the concentration of this work rests on validating the rotor simulation against an actual rotorcraft. The parameters of the 11-3 from the characteristic equation of a …
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Delamination initiation in postbuckled dropped-ply laminates
… analysis and corroborated with experiments. The nonlinear response of the test specimens is modeled by a geometrically nonlinear finite element analysis. The methodology for predicting delamination is based on a quadratic interlaminar stress criterion evaluated at a characteristic distance from …
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Formulation and Validation of a Nonlinear Shell Element for the Analysis of Reinforced Concrete and Masonry Structures
… structures. The accurate determination of the nonlinear response of reinforced concrete and reinforced masonry (RC/RM) walls subjected to lateral loading is of uttermost importance for ensuring the safety of the built environment. Analytical models provide a cost efficient and comprehensive …
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Large-Scale Cyclic Testing and Development of Ring Shaped - Steel Plate Shear Walls for Improved Seismic Performance of Buildings
… models were then utilized to study the nonlinear response history behavior of four prototype building structures using Ring Shaped - Steel Plate Shear Walls and conventional steel plate shear walls. The nonlinear response history analyses investigated the application of the system to a …
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The Reversibility/irreversibility of the Thermohaline Circulation After Its Shutdown: Simulations From a Hierarchy of Climate Models
… maintaining the current climate. Its remarkable nonlinear dynamics, first demonstrated by Stommel, has been supported by different types of models. This has led to concern that global warming may shut down the THC irreversibly, with consequent catastrophic climate changes, particularly for …
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Numerical Analysis of an Airfoil Response to an Impinging Gust
<p>The BASS code, a nonlinear high-order prefactored compact code is validated on a benchmark problem. The nonlinear response of a loaded airfoil to an impinging vertical gust is investigated in the parametric space of gust intensity and frequency. Computational resources, involving a Linux …
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Multimode Nonlinear Vibration Analysis of Stiffened Functionally Graded Double Curved Shells in a Thermal Environment
… work is to develop a multi-modal analysis of the nonlinear response of stiffened double curved shells made of functionally graded materials under thermal loads. The formulation is based on the first order shear deformation shell theory in conjunction with the von Kármán geometrical nonlinear …
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Modelling Reinforced and Prestressed Concrete Structures Subjected to Shear and Torsion
… sectional model capable of predicting the response of shells subjected to the eight stress resultants, is presented. Based on Shell II-S, a simplified three-layered finite element model for shells is presented, the method is called Shell II. These techniques are then used to inform the …
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The (Semi-)Classical Vibrational Echo
… echo experiment is one of a modern generation of nonlinear coherent optical spectroscopies probing the nuclear dynamics of condensed phases. The vibrational echo is the vibrational analog of the NMR spin echo and selectively eliminates inhomogeneous broadening from the echo spectrum, providing …
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Experimental investigation of the response of reinforced concrete structural walls subjected to static and dynamic loading
… of this study was to investigate the hysteretic response of reinforced-concrete (R/C) structural walls that are susceptible to shear failure after flexural yielding. The investigation was divided into an experimental and an analytical phase. There were three main objectives in the experimental …
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Applications of photolithographic techniques : materials modeling for double-exposure lithography and development of shape-encoded biosensor arrays
… without the development of new materials with nonlinear response to exposure dose. Several materials have been proposed to implement a nonlinear response to exposure including re- versible contrast enhancement layers (rCELs), two-photon materials, interme- diate state two-photon (ISTP) …
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Designing Enhanced Nonlinearity in Plasmonic Devices with Epsilon-Near-Zero Films
… optical information processing motivates compact nonlinear photonic devices that can operate at low power. Silicon photonics is a mature platform for linear optical functions, but nonlinear operation remains challenging because of its weak Kerr response, two-photon absorption at telecommunication …
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A method for the geometrically nonlinear analysis of compressively loaded prismatic composite structures
A method was developed for the geometrically nonlinear analysis of the static response of thin-walled stiffened composite structures loaded in uniaxial or biaxial compression. The method is applicable to arbitrary prismatic configurations composed of linked plate strips, such as stiffened panels …
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Performance Assessment of Seismic Resistant Steel Structures
… of the assumptions made within provisions for nonlinear response history analyses. In the first study, two innovative systems, which are hybrid buckling restrained braces and collapse prevention systems, are compared to their traditional counterparts using a combination of the FEMA P-695 and …
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