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Πλοήγηση ανά Θέμα "Bending (deformation)"

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    • Bending deformation capacity of large-diameter spiral-welded tubes 

      Vasilikis, D.; Karamanos, S. A.; Van Es, S. H. J.; Gresnigt, A. M. (2014)
      Numerical simulations are conducted to define the bending deformation capacity of large-diameter spiral-welded tubes, towards efficient strain-based design. Under bending loading, the principal failure mode of those tubes ...

    • Bending response of lap welded steel pipeline joints 

      Sarvanis G.C., Chatzopoulou G., Fappas D., Karamanos S.A., Keil B.D., Lucier G., Gobler F., Mielke R.D. (2020)
      The paper presents a combined experimental and numerical investigation of the bending response of lap welded joints in pressurized steel water pipelines. It is motivated by the structural performance of large-diameter steel ...

    • Buckling of internally-pressurized spiral-welded steel pipes under bending 

      Papadaki C.I., Chatzopoulou G., Sarvanis G.C., Karamanos S.A. (2018)
      The mechanical behavior of spiral-welded large-diameter steel pipes is simulated, with the purpose of defining their bending deformation capacity against local buckling. The steel pipes are candidates for hydrocarbon onshore ...

    • Buckling of thin-walled long steel cylinders under bending 

      Houliara, S.; Karamanos, S. A. (2010)
      The present paper investigates structural response and buckling of long unstiffened thin-walled cylindrical steel shells, subjected to bending moments, with particular emphasis on their stability design. The cylinder ...

    • The effect of spiral cold-bending manufacturing process on pipeline mechanical behavior 

      Chatzopoulou G., Sarvanis G.C., Papadaki C.I., Karamanos S.A. (2016)
      Large-diameter spiral-welded pipes are employed in demanding hydrocarbon pipeline applications, which require an efficient strain-based design framework. In the course of a large European project, numerical simulations on ...

    • The effect of spiral cold-bending manufacturing process on pipeline mechanical behavior 

      Chatzopoulou G., Sarvanis G.C., Karamanos S.A., Mecozzi E., Hilgert O. (2019)
      Large-diameter steel pipes, fabricated through the spiral-welding manufacturing process, are extensively used in onshore pipelines for the transmission of energy (hydrocarbon) and water resources. However, their use in ...

    • Experimental Results of Steel Lap Welded Pipe Joints in Seismic Conditions 

      Keil B.D., Gobler F., Mielke R.D., Lucier G., Sarvanis G.C., Karamanos S.A. (2018)
      Welded lap joints are commonly used in large-diameter steel pipelines for water transmission. Their structural performance constitutes a key issue for safeguarding pipeline structural integrity with no loss of pressure ...

    • Failure of locally buckled pipelines 

      Dama, E.; Karamanos, S. A.; Gresnigt, A. M. (2006)
      Mechanical damage in steel pipelines in the form of local buckles due to excessive bending deformation, may severely threaten their structural integrity. The present paper describes experimental and numerical research ...

    • Finite Element Analysis of Steel Lap Welded Joint Behavior under Severe Seismic Loading Conditions 

      Sarvanis G.C., Chatzopoulou G., Fappas D., Karamanos S.A., Keil B.D., Mielke R.D., Lucier G. (2019)
      The present paper extends the experimental and numerical research presented at the ASCE 2018 conference. The paper is numerical, based on a shell finite element simulation of the welded lap joint subjected to internal ...

    • Modelling of spiral-welded pipe manufacturing and its effect on pipeline structural performance 

      Chatzopoulou G., Sarvanis G.C., Papadaki C.I., Karamanos S.A. (2016)
      The increasing use of large-diameter spiral-welded pipes in demanding hydrocarbon pipeline applications constitutes an engineering challenge, which requires the definition of an appropriate strain-design framework. In the ...

    • Ultimate bending capacity of spiral-welded steel tubes - Part II: Predictions 

      Vasilikis D., Karamanos S.A., Van Es S.H.J., Gresnigt A.M. (2016)
      In the second part of this investigation, numerical simulations are conducted using nonlinear finite element simulations, to define the bending strength and deformation capacity of large-diameter spiral-welded steel tubes. ...

    • 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 ...