Fatigue of welded steel components

Representative publications 

[1]  Papatheocharis, T., Sarvanis, G. C., Perdikaris, P. C., Karamanos, S. A., “Fatigue of welded tubular X-joints in offshore wind platforms”, 38th International Conference on Ocean, Offshore and Arctic Engineering, ASME, OMAE2019-95812, Glasgow, Scotland, UK, June, 2019. DOI

[2]  Chatzopoulou, G., Karamanos, S. A., “Low-cycle fatigue of base-plate-to-shell connection in uplifting liquid storage tanks under seismic loading”, Pressure Vessel and Piping Conference, ASME, PVP2019-93419, San Antonio, Texas, USA, July 2019.DOI

[3]  Chatziioannou, K., Karamanos, S. A., Huang, Y., “Ultra low-cycle fatigue performance of S420 and S700 steel welded tubular X-joints”, International Journal of Fatigue, Vol. 129, pp. 105221, December 2019. DOI

[4]  Varelis, G. E., Papatheocharis, T., Karamanos, S. A., Perdikaris, P. C., “Structural behavior and design of high-strength steel welded tubular connections under extreme loading”, Marine Structures, Vol. 71, pp. 102701, May 2020. DOI

 

Structural strength of lap welded pipeline joints

Representative publications 

[1]   McPherson, D. L., Duffy, M., Koritsa, E., Karamanos, S. A. and Plattsmier, J. R.,Improving the performance of steel pipe welded-lap joints in geohazard areas”, ASCE Pipelines Conference Paper No. 183, Kansas City, MO, July 2016. DOI

[2]   Keil, B. D., Gobler, F., Mielke, R. D., Lucier, G., Sarvanis, G. C., Karamanos, S. A., “Experimental Results of Steel Lap Welded Pipe Joints in Seismic Conditions.”, ASCE Pipelines Conference, paper No. 386906, Toronto, ON, Canada, July 2018. DOI

[3]   Chatzopoulou, G., Fappas, D., Karamanos, S. A., Keil, B. D. and Mielke, R. D., “Numerical Simulation of Steel Lap Welded Pipe Joint Behavior in Seismic Conditions.”, ASCE Pipelines Conference, paper No. 387141, Toronto, ON, Canada, July 2018. DOI

[4]   Card, R. J., Karamanos, S. A., Sarvanis, G., Chatzopoulou, G., “Joint Strength or “Efficiency” Factors of Steel Lap Welded Joints for Use in Water Conveyance”, ASCE Pipelines Conference, paper No. 535636, Nashville, TN, USA, July 2019. DOI

[5]   Keil, B. D., Lucier, G., Karamanos, S. A., Mielke, R. D., Gobler, F., Fappas, D., Sarvanis, G. C., Chatzopoulou, G., Card, R. J., “Experimental Investigation of Steel Lap Welded Pipe Joint Performance Under Severe Axial Loading Conditions in Seismic or Geohazard Areas”, ASCE Pipelines Conference, paper No. 744005, San Antonio, TX, USA, August 2020.

[6]   Keil, B. D., Mielke, R. D., Gobler, F., Lucier, G., Sarvanis, G. C., Chatzopoulou, G., Fappas, D., Karamanos, S. A., “Newly Developed Seismic Resilient Steel Pipe Joint Safeguards Pipeline Structural Integrity during Severe Geohazard Events”, ASCE Pipelines Conference, paper No. 744041, San Antonio, TX, USA, August 2020.

Modelling of line pipe manufacturing process and its effect on pipeline strength and collapse

Representative publications 

[1]   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

[2]   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

[3]   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

[4]   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

[5]   Antoniou, K., Chatzopoulou, G., Karamanos, S. A., Tazedakis, A., Palagas, C., Dourdounis, E., “Simulation of JCO-E Line Pipe Fabrication Process”, 15th Pipeline Technology Conference, Berlin, March 2020.

 

Structural members under severe cyclic loading

Representative publications 

[1]   Varelis, G. E., Karamanos, S. A., and Gresnigt, A. M., “Pipe Elbows Under Strong Cyclic Loading.”, Journal of Pressure Vessel Technology, ASME, Vol.135, No.1, Article Number: 011207, February 2013. DOI

[2]   Varelis, G. E., and Karamanos, S. A., “Buckling of High-Strength Steel Cylinders Under Cyclic Bending in the Inelastic Range.”, Journal of Pressure Vessel Technology, ASME, Vol. 136, Article Number: 021207, April 2014. DOI

[3]   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

[4]   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

[5]   Chatziioannou, K., Huang Y. and Karamanos S. A., “Simulation of piping ratcheting experiments using advanced plane-stress cyclic elastoplasticity models”, Pressure Vessel and Piping Conference, ASME, PVP2019-93507, San Antonio, Texas, USA, July 2019. DOI

Reeling and buckling of lined steel pipes

Representative publications 

[1]   Vasilikis, D. and Karamanos, S. A., “Mechanical Behavior and Wrinkling of Lined Pipes.”, International Journal of Solids and Structures, Vol. 49, No. 23-24, pp. 3432-3446, November 2012. DOI

[2]   Vasilikis, D. and Karamanos, S. A., “Wrinkling of Lined Steel Pipes Under Bending.”, Offshore Mechanics and Arctic Engineering Conference, ASME, OMAE2013-11122, Nantes, France, June 2013. DOI

[3]   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

[4]   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

Non-associative models for structural instability simulations

Representative publications 

[1]   Pappa, P. and Karamanos, S. A., "Non-Associative J2 Plasticity Model for Finite Element Buckling Analysis of Shells in the Inelastic Range", Computer Methods in Applied Mechanics and Engineering, Vol. 300, pp. 689–715, March 2016. DOI

[2]   Nasikas, A., Karamanos, S. A. and Papanicolopulos, S. A., “A framework for formulatingand implementing non-associative plasticity models forshell buckling computations”, Computers & Structures, submitted for publication

Pipeline analysis and design in geohazard areas

Representative publications 

[1]     Vazouras, P., Karamanos, S. A.and Dakoulas, P., “Finite Element Analysis of Buried Steel Pipelines Under Strike-Slip Fault Displacements, Soil Dynamics and Earthquake Engineering, Vol. 30, No. 11, pp. 1361–1376, November 2010. DOI

[2]     Vazouras, P., Karamanos, S. A. and Dakoulas, P., “Mechanical behavior of buried steel pipes crossing active strike-slip faults”, Soil Dynamics and Earthquake Engineering, Vol. 41,pp. 164-180, October 2012. DOI

[3]     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

[4]     Ferino, J., Fonzo, A., Di Biagio, M., Demofonti, G. Spinelli, C. M., 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

[5]     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

[6]     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

[7]     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

[8]     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

[9]     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

[10]  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. DOI

 

Seismic analysis of liquid storage tanks and industrial piping components

Representative publications 

[1]   Labbé, P., Reddy, G. R., Mathon, C., Moreau, F., Karamanos, S. A., “The OECD-NEA Programme on Metallic Component Margins Under High Seismic Loads (MECOS)”, Pressure Vessel and Piping Conference, ASME, PVP2016-63119, Vancouver, Canada, July 2016. DOI

[2]   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

[3]   Vathi, M., Karamanos, S. A., Kapogiannis, I. A. and Spiliopoulos, K. V., “Performance criteria for liquid storage tanks and piping systems subjected to seismic loading.”, Journal of Pressure Vessel Technology, ASME, Vol. 139, Article Number: 051801, October, 2017. DOI

[4]   Vathi, M. and Karamanos, S. A., “A Simple and Efficient Model for Seismic Response and Low-Cycle Fatigue Assessment of Uplifting Liquid Storage Tanks.”, Journal of Loss Prevention in the Process Industries, Vol. 53, pp. 29-44, May 2018. DOI

 

 

Spyros A. Karamanos, PhD

Department of Mechanical Engineering | University of Thessaly | Pedion Areos, Volos 38334, Greece
Phone: +30 - 24210 74086, 74360 | Fax : +30 - 24210 74360 | Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

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