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Structural Mechanics Group

 

Structural Mechanics for Pipes and Pipelines

Steel pipelines and piping components, used in numerous engineering applications, are often subjected to severe loading conditions (monotonic or cyclic) associated with inelastic deformations, which may threat their structural integrity.

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Progressive inelastic damage of piping due to low-cycle fatigue 

 

Special issues

  • Seismic analysis and design of steel water pipelines (cooperation with Northwest Pipe Company)
  • Mechanical behavior of lap welded joints (cooperation with Northwest Pipe Company)
  • Effect of line pipe fabrication process on the mechanical behavior of pipelines (cooperation with Corinth Pipeworks S.A.)
  • Structural behavior of mechanically-lined (bi-material) steel pipes
  • Seismic response of industrial piping components
  • Ratcheting and low-cycle fatigue of welded pipe components, using experimental and numerical simulation (coupled plasticity-damage models)

Recent research projects

Link

MECOS benchmark

Relevant recent publications (last 5 years)

[1] Varelis, G. E. and Karamanos, S. A., “Low-Cycle Fatigue of Pressurized Steel Elbows Under In-Plane Bending.”, Journal of Pressure Vessel Technology, ASME, Vol.137, No.1, Article Number: 011401, February 2015. DOI

[2] Vazouras, P., Dakoulas, P. and Karamanos, S. A., “Pipe-Soil Interaction and Pipeline Performance Under Strike-Slip Fault Movements.”,Soil Dynamics and Earthquake Engineering, Vol. 72, pp. 48–65, May 2015. DOI

[3] Ferino, J., Fonzo, A., Di Biagio, M., Demofonti, G., Spinelli, C. M. and Karamanos S. A., “Onshore pipeline high grade steel for challenge utilization.”, International Journal of Offshore and Polar Engineering, ISOPE, Vol. 25, No. 4, pp. 272–280, December 2015. PDF

[4] Chatzopoulou, G., Karamanos, S. A. and Varelis, G. E., “Finite Element Analysis of UOE Manufacturing Process and its Effect on Mechanical Behavior of Offshore Pipes.”, International Journal of Solids and Structures, Vol. 83, pp. 13-27,April 2016.DOI

[5] Van Es, S. H. J., Gresnigt, A. M., Vasilikis, D. and Karamanos, S. A., “Ultimate Bending Capacity of Spiral-Welded Steel Tubes - Part I: Experiments”, Thin-Walled Structures, Vol. 102, pp. 286-304, May 2016. DOI

[6] Vasilikis, D., Karamanos, S. A., Van Es, S. H. J. and Gresnigt, A. M., “Ultimate Bending Capacity of Spiral-Welded Steel Tubes - Part II: Predictions”, Thin-Walled Structures, Vol. 102,pp. 305-319, May 2016. DOI

[7] Karamanos, S. A., “Mechanical Behavior of Steel Pipe Bends; An Overview.”, Journal of Pressure Vessel Technology, ASME, Invited paper:special issue for the 50th Anniversary of PVPD, Vol. 138, No. 4, Article Number: 041203, August 2016. DOI

[8] Chatzopoulou, G., Karamanos, S. A. and Varelis, G. E., “Finite Element Analysis of Cyclically-Loaded Steel Pipes During Deep Water Reeling Installation.”, Ocean Engineering, Vol. 124, pp. 113–124, September 2016. DOI

[9] Kaya, E. S., Uckan, E., O’Rourke, M. J., Karamanos, S. A., Akbas, B., Cakir, F., Cheng, Y., “Failure Analysis of a Welded Steel Pipe at Kullar Fault Crossing”, Engineering Failure Analysis, Vol. 71, pp. 43-62, January 2017. DOI

[10] Skarakis, I., Chatzopoulou, G., Karamanos, S. A., Tsouvalis, N. G. and Pournara, A. E., “CFRP Reinforcement and Repair of Steel Pipe Elbows Subjected to Severe Cyclic Loading”, Journal of Pressure Vessel Technology, ASME, Vol. 139, Article Number: 051403, October 2017. DOI

[11] Karamanos, S. A., Sarvanis, G. C., Keil, B. and Card, R. J., “Analysis and Design of Buried Steel Water Pipelines in Seismic Areas.”, Journal of Pipeline Systems, Engineering & Practice, ASCE, Vol. 8, No. 4, Article Number: 04017018, November 2017. DOI

[12] Vazouras, P. and Karamanos, S. A., “Structural Behavior of Buried Pipe Bends and Their Effect on Pipeline Response in Fault Crossing Areas”, Bulletin of Earthquake Engineering, Vol. 15, No. 11, pp. 4999-5024, November 2017. DOI

[13] Sarvanis, G. C., and Karamanos, S. A., “Analytical Model for the Strain Analysis of Continuous Buried Pipelines in Geohazard Areas.”, Engineering Structures, Vol. 152, pp. 57-69, December 2017. DOI

[14]   Sarvanis, G. C., Karamanos, S. A., Vazouras, P., Mecozzi, E., Lucci, A., Dakoulas, P., "Permanent Earthquake-Induced Actions in Buried Pipelines: Numerical Modeling and Experimental Verification", Earthquake Engineering and Structural Dynamics, Vol. 47, No. 4, pp. 966–987, April 2018. DOI

[15]   Papadaki, C. I., Karamanos, S. A., Chatzopoulou, G. and Sarvanis, G. C., “Buckling of Internally-Pressurized Spiral-Welded Steel Pipes under Bending.”, International Journal of Pressure Vessels and Piping, Vol. 165, Pages 270-285, August 2018. DOI

[16]   Gavriilidis, I. and Karamanos, S. A., “Bending and buckling of internally-pressurized steel lined pipes”, Ocean Engineering, Vol. 171, pp. 540–553, January 2019. DOI

[17]   Pournara, A. E., Papatheocharis, T., Karamanos, S. A. and Perdikaris, P. C., “Mechanical Behavior of Dented Steel Pipes Subjected to Bending and Pressure Loading.”, Journal of Offshore Mechanics and Arctic Engineering, ASME, Vol. 141, No. 1, Article Number: 011702, February 2019. DOI

[18]   Antoniou, K., Chatzopoulou, G., Karamanos, S. A., Tazedakis, A., Palagas, C., Dourdounis, E., “Numerical Simulation of JCO-E Pipe Manufacturing Process and its Effect on the External Pressure Capacity of the Pipe.”, Journal of Offshore Mechanics and Arctic Engineering, ASME, Vol. 141, No. 1, Article Number: 011704, February 2019. DOI

[19]   Chatzopoulou, G., Sarvanis, G. C., Karamanos, S. A., Mecozzi, E., Hilgert, O., “The effect of spiral cold-bending manufacturing process on pipeline mechanical behavior”, International Journal of Solids and Structures, Vol. 166, pp. 167-182, July 2019. DOI

[20]   Gavriilidis, I. and Karamanos, S. A., “Effect of manufacturing process on lined pipe bending response”, Journal of Offshore Mechanics and Arctic Engineering, ASME, Vol. 142, No. 5, Article number: 051801, October 2020. DOI

[21]   Karamanos, S. A., Gresnigt, A. M. and Dijkstra, G. J. (Eds.), Geohazards and Pipelines, State-of-the-art design using experimental, numerical and analytical methodologies, Springer Nature, Cham, Switzerland, 175 pages, to be published 2020. https://www.springer.com/gp/book/9783030498917