Πλοήγηση ανά Συγγραφέα "Varelis, G. E."
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Buckling of high-strength steel cylinders under cyclic bending in the inelastic range
Varelis, G. E.; Karamanos, S. A. (2013)The present paper examines the structural behavior of high-strength elongated steel cylinders, referred to as tubes or pipes, subjected to strong cyclic bending, through a rigorous finite element simulation. The cylinder ... -
Buckling of High-Strength Steel Cylinders Under Cyclic Bending in the Inelastic Range
Varelis, G. E.; Karamanos, S. A. (2014)The present paper examines the structural behavior of elongated steel hollow cylinders, referred to as tubes or pipes, subjected to large cyclic bending, through a rigorous finite element simulation. The bent cylinders ... -
Effect of UOE manufacturing process on pressure buckling of thick-walled pipes
Varelis, G. E.; Vathi, M.; Houliara, S.; Karamanos, S. A. (2009) -
Effects of UOE manufacturing process on pressurized bending response of offshore pipes
Chatzopoulou, G.; Karamanos, S. A.; Varelis, G. E. (2014)Thick-walled steel pipes manufactured through the UOE process are used in deep-water pipeline applications for the safe and cost-effective transmission of hydrocarbon energy resources. Such pipes are subjected to bending ... -
Experimental and numerical investigation of pipe T-junctions under strong cyclic loading
Papatheocharis, T.; Diamanti, K.; Varelis, G. E.; Perdikaris, P. C.; Karamanos, S. A. (2013)Tee pipe junctions are piping components widely used in industrial and pipeline applications. Their performance under severe loading conditions may be critical for the structural integrity of an industrial facility. When ... -
Experimental and numerical investigation of pressurized pipe elbows under strong cyclic loading
Varelis, G. E.; Ferino, J.; Karamanos, S. A.; Lucci, A.; Demofonti, G. (2013)The present work examines the behavior of pipe elbows subjected to strong cyclic in-plane bending loading in the presence of internal pressure. In the first part of this work the experimental procedure is presented in ... -
Finite element analysis of industrial steel elbows under strong cyclic loading
Varelis, G. E.; Pappa, P.; Karamanos, S. A. (2011)Steel elbows are used in petrochemical facilities and power plants. In the case of an earthquake event, in addition to other service loads, they are subjected to strong repeated cyclic structural loading that may lead to ... -
Finite element analysis of UOE pipes under external pressure and bending
Chatzopoulou, G.; Varelis, G. E.; Karamanos, S. A. (2014)Thick-walled steel pipes manufactured through the UOE process are used in deep-water pipeline applications for the safe and cost-effective transmission of hydrocarbon energy resources. Such pipes are subjected to bending ... -
Low cycle fatigue tests and simulations on steel elbows
Pappa, P.; Varelis, G. E.; Karamanos, S. A.; Gresnigt, A. M. (2013)In this paper the low cycle fatigue behaviour of steel elbows under strong cyclic loading conditions (in-plane and out-of-plane) is examined. The investigation is conducted through advanced finite element analysis tools, ... -
Low-Cycle Fatigue of Pressurized Steel Elbows Under In-Plane Bending
Varelis, G. E.; Karamanos, S. A. (2015)The present study examines the mechanical behavior of steel process piping elbows, subjected to strong cyclic loading conditions. The work is numerical, supported by experimental data on elbow specimens subjected to in-plane ... -
Numerical modelling of steel pipelines subjected to severe monotonic and cyclic straining
Coppola, T.; Fonzo, A.; Campanelli, F.; Varelis, G. E.; Chatzopoulou, G.; Karamanos, S. A. (2014)Offshore and onshore pipelines may experience extreme loading conditions during their installation and operation, both of monotonic and cyclic nature. Loading actions such as pipeline lateral displacements, tensioning, or ... -
Pipe Elbows Under Strong Cyclic Loading
Varelis, G. E.; Karamanos, S. A.; Gresnigt, A. M. (2013)Motivated by the response of industrial piping under seismic loading conditions, the present study examines the behavior of steel process piping elbows, subjected to strong cyclic loading conditions. A set of experiments ... -
Pipe elbows under strong cyclic loading
Varelis, G. E.; Karamanos, S. A.; Gresnigt, A. M. (2012)Motivated by the response of industrial piping under seismic loading conditions, the present study examines the behavior of steel process piping elbows, subjected to strong cyclic loading conditions. A set of experiments ... -
Simulation of industrial elbow response under strong cyclic loading
Varelis, G. E.; Pappa, P.; Karamanos, S. A. (2011)Elbow components are widely used in industrial facilities as parts of piping/tubing systems. Their performance under severe loading conditions may be critical for the structural integrity of an industrial facility In the ... -
Steel elbow response under strong cyclic loading
Varelis, G. E.; Gresnigt, A. M.; Karamanos, S. A. (2012)The present study examines the behavior of steel pipeline elbows subjected to strong cyclic loading conditions. A set of experiments is conducted where in-plane cyclic bending with constant amplitude is applied on the elbow ... -
Structural performance of steel pipe tee-junctions
Papatheocharis, T.; Diamanti, K.; Varelis, G. E.; Perdikaris, P. C.; Karamanos, S. A. (2014)The behavior of steel pipe junctions (Tees) subjected to strong loading in the presence of internal pressure is examined in the present study. The analysis is based on a set of monotonic and cyclic out-of plane bending ... -
Structural performance of TS590 high-strength steel welded tubular joints under extreme bending loading
Varelis, G. E.; Karamanos, S. A.; Papatheocharis, T.; Perdikaris, P. C. (2012)The present work examines the behavior of welded tubular connections made of high-strength steel and subjected to extreme loading conditions focusing on their low-cycle fatigue performance and highlighting the benefits of ...