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 10 of 10 for “"Hysteretic Damping"”.
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Frequency- and pressure-dependent dynamic soil properties for seismic analysis of deep sites
… used standardized shear modulus degradation and damping curves versus shear strain amplitude. The most widely employed degradation and damping curves, are those originally proposed by Seed & Idriss, 1969. Laboratory experimental data (Laird & Stokoe, 1993) performed on sand samples, subjected to …
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Numerical simulation of dynamic centrifuge tests on concrete faced rockfill dam
… investigated: (1) impact of un/reloading rules (hysteretic behavior), and (2) interface type between concrete face and rockfill (welded and friction contact) on the computed seismic response of the CFRDs. The numerical results are evaluated by comparing with measurements in terms of …
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Nonlinear Mr Model Inversion for Semi-Active Control Enhancement With Open-Loop Force Compensation
… to controlling dampers, the well-known Skyhook Damping control algorithm has enjoyed great success for both fully active and semi-active control problems. The Skyhook design strategy is to create a control force that emulates what a passive linear damper would create when connected to an …
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Assessment of Seismic Behaviour of Large LNG Tanks Considering Soil-Foundation- Structure Interaction
… is also verified and implemented to capture the hysteretic damping of the soil and the variation of the shear modulus with the cyclic shear strain developed in the soil. Infinite boundary elements are assigned to the numerical model, and proper interface elements, capable of modelling sliding and …
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Modeling Cable Harness Effects on Space Structures
… identifying natural frequencies and damping values of spaceflight cables before and after the bakeout process. After bakeout, spaceflight cables showed reduced natural frequencies and increased damping, so a bakeout correction factor is recommended for bending stiffness calculations. …
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Effect of Viscous Fluid Dampers on Steel Moment Frame Designed for Strength and Hybrid Steel Moment Frame Design
… study. As a result, it was found that as the damping of the structure increases with the help of added dampers, the structural response gets better. Maximum and residual roof displacements, interstory drifts, and IDA dispersion decreases with increasing damping. In addition, by using …
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Computational simulation and analytical development of Buckling Resistant Steel Plate Shear Wall (BR-SPSW)
… at small loads which results in highly pinched hysteretic behavior, low stiffness, and limited energy dissipation. To mitigate these shortcomings, a new type of SPSW has been developed and investigated. The buckling resistant steel plate shear wall (BR-SPSW) utilizes a unique pattern of cut-outs …
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Large-Scale Cyclic Testing and Development of Ring Shaped - Steel Plate Shear Walls for Improved Seismic Performance of Buildings
… constructed that can accurately reproduce the hysteretic performance of the web plates. The reduced-order 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 …
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The dynamic soil structure interaction of shallow foundations on dry sand beds
… isolated from the shaking through manufactured damping systems or designed to withstand the full force of the dynamic shaking while the energy is dissipated through structural damping. There is, however, an increasing focus on reducing the coupling between the soil and foundation which …
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Determining seismic response of mid-rise building frames considering dynamic soil-structure interaction
… nonlinear constitutive relation and adopts hysteretic damping algorithm enabling strain-dependent modulus (G/Gmax - ɤ) and damping functions (ζ - ɤ) to be incorporated directly to capture the hysteresis curves and energy-absorbing characteristics of the real soil. In order to avoid …