Πλοήγηση ανά Συγγραφέα "Karamanos, S. A."
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Stress concentrations in tubular gap K-joints: mechanics and fatigue design
Karamanos, S. A.; Romeijn, A.; Wardenier, J. (2000)The present paper offers a comprehensive study on stress concentrations in welded tubular steel gap K-joints and its implications on fatigue design. After presenting an extensive overview of the relevant literature, finite ... -
Structural integrity of steel hydrocarbon pipelines with local wall distortions
Pournara, A. E.; Karamanos, S. A.; Papatheocharis, T.; Perdikaris, P. C. (2014)Local distortions on pipeline wall in the form of dents or buckles may constitute a threat for the structural integrity of the steel pipeline. In the present paper, experimental research supported by numerical simulation ... -
Structural performance of buried steel pipelines crossing strike-slip faults
Vazouras, P.; Dakoulas, P.; Karamanos, S. A. (2014)The performance of pipelines subjected to permanent strike-slip fault movement is investigated by combining detailed numerical simulations and closed-form solutions. A closed-form solution for the force-displacement ... -
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 ... -
Ultimate bending capacity and buckling of pressurized 90 deg steel elbows
Karamanos, S. A.; Tsouvalas, D.; Gresnigt, A. M. (2006)The paper examines the nonlinear elastic-plastic response of internally pressurized 90 deg pipe elbows under in-plane and out-of-plane bending. Nonlinear shell elements from a general-purpose finite element program are ... -
Ultimate capacity of pipe bends under bending and pressure
Pappa, P.; Karamanos, S. A.; Tsouvalas, D.; Houliara, S. (2008)The structural capacity of pressurized pipe elbows under in-plane bending is examined. The investigation is conducted through advanced finite element analysis tools. The numerical results are successfully compared with ... -
Ultimate capacity of pressurized 90 DEG elbows under bending
Karamanos, S. A.; Tsouvalas, D.; Gresnigt, A. M. (2004)In this paper the response of internally pressurized pipe elbows under bending loads (in-plane and out-of-plane) is examined. The investigation is conducted through advanced finite element analysis tools, supported by ... -
Ultimate capacity of welded-slip joints under axial compression
Tsetseni, S.; Karamanos, S. A. (2006)Using advanced numerical tools, which account for the cold-expansion manufacturing process, the axial capacity of welded slip pipeline joints under compressive loading is investigated. The numerical results are in good ... -
Variational analysis of sloshing in spherical industrial vessels under earthquake loading
Patkas, L. A.; Karamanos, S. A. (2006)A variational formulation is developed for calculating liquid sloshing effects on the dynamic response of spherical containers under external dynamic excitation. The velocity potential is expressed in a series form, where ... -
Variational solutions for externally induced sloshing in horizontal-cylindrical and spherical vessels
Patkas, L. A.; Karamanos, S. A. (2007)A mathematical model is developed for calculating linear sloshing effects in the dynamic response of horizontal-cylindrical and spherical liquid containers under external excitation, with emphasis on earthquake excitation. ... -
Wrinkling of lined pipes under bending
Vasilikis, D.; Karamanos, S. A. (2012)The present study is motivated by the use of lined pipes in energy pipeline applications (oil, gas, etc.) where a corrosion-resistant thin-walled liner is fitted inside a carbon-steel outer pipe. The paper focuses on ... -
Wrinkling of lined steel pipes under bending
Vasilikis, D.; Karamanos, S. A. (2013)Lined pipes are used in energy pipeline applications (oil, gas, etc.); a corrosion-resistant thin-walled liner is fitted inside a carbon-steel outer pipe. The paper focuses on wrinkling of lined pipes (sometimes also ...