Sharif Digital Repository

Friction damper for vibration control in offshore steel jacket platforms

Author

Golafshani, A. A.

Pub. Year

2009

Subjects

Damping. / Drilling platforms. / Lattice vibrations. / Linearization. / Oceanography. / Offshore structures. / Spectrum analyzers. / Steel. / Systems analysis. / Tribology. / Water waves. / Adjustable parameters. / Friction damper. / Friction dampers. / Hysteretic dampers. / Induced vibrations. / Mathematical formulations. / Nonlinear behaviors. / Ocean waves. / Off shore platforms. / Offshore steels. / Optimal values. / Power spectral analysis. / Realistic models. / Steel jacket platforms. / Stochastic analyses. / Stochastic linearization. / Stochastic linearizations. / Wave induced vibrations. / Friction.

Passive devices for wave induced vibration control in offshore steel jacket platforms

Author

Golafshani, A. A.

Pub. Year

2009

Subjects

Friction damper. / Genetic algorithm. / Tuned mass damper. / Power spectral analysis. / Steel jacket platforms. / Stochastic linearization. / Tuned mass dampers. / Acoustic devices. / Damping. / Drilling platforms. / Dynamic response. / Friction. / Genetic algorithms. / Linearization. / Metal analysis. / Oceanography. / Offshore structures. / Spectrum analysis. / Spectrum analyzers. / Stochastic systems. / Time domain analysis. / Tribology. / Vibration control. / Water waves. / Vibration analysis. / Nonlinear wave. / Numerical model. / Ocean wave. / Spectral analysis. / Steel jacket platform. / Vibration.

The exact and approximate conditional spectra in the multi-seismic-sources regions

Author

Ebrahimian, H.

Publisher

Elsevier,

Pub. Year

2012

Subjects

Nonlinear dynamic analysis. / Probabilistic seismic hazard deaggregation. / Selection of ground motion records. / Conditional distribution. / Conditional spectrum. / De aggregations. / Exact distribution. / Exact solution. / Gas fields. / Persian Gulf region. / Seismic area. / Seismic scenarios. / Spectral acceleration. / Study sites. / Target spectrum. / Dynamics. / Gas industry. / Seismology. / Probability distributions. / Earthquake mechanism. / Earthquake trigger. / Ground motion. / Nonlinearity. / probability. / Seismic hazard. / Seismic source. / Seismic zone. / Spectral analysis. / Arabian Sea. / Indian Ocean. / Persian Gulf. / South Pars Field.

Performance-based assessment of an innovative braced tube system for tall buildings

Author

Mohammadi, H.

Pub. Year

2017

Subjects

Braced tube system. / Ribbed bracing system. / Tall building. / Buckling. / Buildings. / Geophysics. / Seismic response. / Seismology. / Tall buildings. / Bracing systems. / Buckling problems. / Lateral force resisting system. / Maximum considered earthquakes. / Nonlinear time history analysis. / Performance-based assessment. / Seismic performance. / Tube systems. / Earthquakes.

Experimental evaluation of pinned frame equipped with ribbed bracing system

Author

Mohammadi, H.

Pub. Year

2017

Subjects

Ribbed bracing system. / Steel brace. / Buckling. / Control systems. / Energy dissipation. / Bracing systems. / Buckling resistance. / Passive control system. / Plastic capacity. / Steel braces. / Hysteresis.

Experimental evaluation of pinned frame equipped with ribbed bracing system

Author

Mohammadi, H.

Publisher

Taylor and Francis Ltd,

Pub. Year

2019

Subjects

Ribbed bracing system. / Steel brace. / Buckling. / Control systems. / Energy dissipation. / Bracing systems. / Buckling resistance. / Passive control system. / Plastic capacity. / Steel braces. / Hysteresis.

Performance-based assessment of an innovative braced tube system for tall buildings

Author

Mohammadi, H.

Publisher

Springer Netherlands,

Pub. Year

2018

Subjects

Braced tube system. / Performance-based assessment. / Ribbed bracing system. / Seismic performance. / Tall building. / Buildings. / Geophysics. / Seismic response. / Seismology. / Tall buildings. / Bracing systems. / Buckling problems. / Lateral force resisting system. / Maximum considered earthquakes. / Nonlinear time history analysis. / Tube systems. / Earthquakes. / Assessment method. / Building. / Ground motion. / Innovation. / Numerical model. / Performance assessment. / Three-dimensional modeling. / Buckling.

Torsion mitigation of existing asymmetric structures using damper

Author

Tabeshpour, M. R.

Publisher

AJCE,

Pub. Year

2012

Subjects

Damper. / Infill wall. / Push-over. / Torsion.

Hybrid damping systems in offshore jacket platforms with float-over deck

Author

Jafarabad, A.

Pub. Year

2014

Subjects

Hybrid damping system. / Offshore jacket platform. / Tuned mass damper. / Wave-induced fatigue damage. / Acoustic devices. / Drilling platforms. / Fatigue damage. / Friction. / Seismology. / Friction damper. / Hybrid damping. / Offshore jackets. / Seismic load. / Tuned mass dampers. / Damping.

Inverse vibration technique for structural health monitoring of offshore jacket platforms

Author

Haeri, M. H.

Publisher

Elsevier Ltd,

Pub. Year

2017

Subjects

Inverse vibration problem. / Offshore jacket platforms. / Structural health monitoring. / Uncertainty analysis. / Accelerometers. / Drilling platforms. / Inverse problems. / Natural frequencies. / Offshore structures. / Three dimensional computer graphics. / Vibration analysis. / Ambient vibrations. / Dimensional reference. / Fundamental frequencies. / Natural frequencies and modes. / Off shore platforms. / Offshore jackets. / Structural systems. / Health monitoring. / Inverse problem. / Steel jacket platform. / Vibration. / Arabian Sea. / Indian Ocean. / Persian Gulf.

Semiactive viscous tensile bracing system

Author

Rahani, E.K.

Pub. Year

2009

Subjects

Bracing. / Buckling. / Damage. / Damping. / Deformation. / Ductility. / Earthquake loads. / Structural control. / Bracing systems. / Capacity designs. / Control commands. / Damage indices. / Earthquake engineerings. / Energy dissipating. / Large power. / Mechanical systems. / Non-linear dynamic analysis. / Power supplies. / Semi actives. / Semi-active control systems. / Semi-active controls. / Structural behaviors. / Structural control. / Tensile steels. / Viscous dampers. / Civil engineering. / Control system analysis. / Dynamic analysis. / Earthquakes. / Electric power distribution. / Electric power transmission networks. / Electric power utilization. / Engineering geology. / Hysteresis. / Mechanisms. / Structural dynamics. / Valves (mechanical) / Buckling.

Adaptive control of structures by LMS algorithm: A comparative study

Author

Golafshani, A. A.

Publisher

ICE Publishing Ltd,

Pub. Year

2002

Subjects

Design methods and aids. / Materials technology.

Semi-active multivariable adaptive control of structures under earthquake excitations

Author

Golafshani, A. A.

Publisher

Sharif University of Technology,

Pub. Year

2001

Experimental and numerical study on a novel ribbed bracing system

Author

Golafshani, A. A.

Publisher

SAGE Publications Inc,

Pub. Year

2018

Subjects

Buckling avoidance. / Ribbed bracing system. / Self-centering. / Construction. / Structural design. / Bracing systems. / Compressive deformations. / Different mechanisms. / Energy absorption capacity. / Experimental. / Experimental and numerical studies. / Quasi-static loading. / Self centering. / Energy absorption.

Retrofit of Ressalat jacket platform (Persian Gulf) using friction damper device

Author

Komachi, Y.

Pub. Year

2011

Subjects

Jacket offshore platform. / Seismic forces. / Seismic retrofit. / Control effectiveness. / Controlled structures. / Damping device. / Damping system. / Friction damper. / Jacket platforms. / Key parameters. / Off shore platforms. / Offshore platform structure. / Parametric study. / Persian Gulf. / Seismic excitations. / Friction damper devices (FDDs) / Seismic retrofits. / Seismically active zones. / Steel jacket platforms. / Vibration mitigation. / Vibration suppression. / Damping. / Drilling platforms. / Dynamic response. / Friction. / Offshore structures. / Retrofitting. / Seismology. / Vibration control. / Tribology.

The fiber element technique for analysis of concrete-filled steel tubes under cyclic loads

Author

Golafshani, A. A.

Publisher

Techno-Press,

Pub. Year

2002

Subjects

Composite fiber element. / Concrete-Filled steel Tubes (CFT) / Cyclic loads. / Hermitian shape functions. / Hysteretic. / Lagragian shape functions. / Material models. / Quartic shape functions.

Local joint flexibility element for offshore plateforms structures

Author

Golafshani, A. A.

Pub. Year

2013

Subjects

Brace. / Chord. / Flexibility matrix. / Tubular framed structure. / Brace. / Flexibility matrices. / Framed structure. / Joint flexibility. / Drilling platforms. / Joints (structural components) / Matrix algebra. / Offshore structures. / Production platforms. / Structural frames. / Finite element method. / Accuracy assessment. / Design. / Fixed offshore structure. / Flexure. / Joint. / Model test. / Model validation.

Health monitoring of structures using few frequency response measurements

Author

Golafshani, A. A.

Pub. Year

2010

Subjects

Minimum rank perturbation theory. / Offshore jacket platform. / Damage detection technique. / Detection capability. / Finite number. / Frequency response function. / Frequency response measurement. / Health monitoring of structure. / Jacket platforms. / Minimum rank. / Multiple damages. / Numerical studies. / Offshore jacket structures. / Offshore jackets. / Response-based method. / Structural health. / Damage detection. / Drilling platforms. / Frequency response. / Health. / Monitoring. / Perturbation techniques. / Structural health monitoring. / Catastrophic event. / Damage. / Detection method. / Health monitoring. / Numerical model. / Offshore structure.

Estimation of the compressive strength of green concretes containing rice husk ash: a comparison of different machine learning approaches

Author

Tavana Amlashi, A.

Publisher

Taylor and Francis Ltd,

Pub. Year

2022

Subjects

Concrete. / Machine learning. / Rice husk ash. / Aggregates. / Binders. / Compressive strength. / Concrete mixtures. / Neural networks. / Portland cement. / Accurate modeling. / Coarse aggregates. / Compressive strength of concrete. / Environmental issues. / Green concrete. / Machine learning approaches. / Multivariate adaptive regression splines. / Ordinary Portland cement. / Parametric study. / Rice-husk ash. / Sensitivity analysis.

Tuned mass damper for vibration control in steel jacket platforms

Author

Golafshani, A. A.

Pub. Year

2008

Subjects

Adjustable parameters. / Constant parameters. / Control mechanism. / Critical condition. / Damping ratio. / Displacement control. / Fatigue analysis. / Fatigue life. / Maximum design. / Micro genetic algorithm. / Minmax problem. / Objective functions. / Off shore platforms. / Optimality. / Optimum tuning. / Safety margin. / Sea state. / Seismic analysis. / Spectral analysis method. / Steel jacket platforms. / Steel jackets. / Stress cycle. / Tuned mass damper. / Tuned mass dampers. / Wave-induced force. / Acoustic devices. / Arctic engineering. / Drilling platforms. / Excited states. / Mechanics. / Offshore structures. / Seismic design. / Spectrum analysis. / Spectrum analyzers. / Structural optimization. / Vibration control. / Fatigue damage.