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Πλοήγηση ανά Συγγραφέα "Pappa, P."

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    • Buckling and classification of high-strength steel CHS tubular members under axial compression and bending 

      Pappa, P.; Karamanos, S. A. (2012)
      EN 1993-1-1 provisions classify high-strength steel CHS members with relatively low values of D/t ratio as Class 3 or 4, so that their strength is based on elastic behavior only, neglecting their capability of sustaining ...

    • 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 ...

    • 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, ...

    • Numerical implementation of J 2 non-associative flow plasticity models 

      Pappa, P.; Karamanos, S. A. (2009)
      The present paper describes a J2 non-associative plasticity model, which takes into account the "corner-like" effects at the loading point on the yield surface, and is suitable for shell buckling calculations. The plastic ...

    • On the seismic behaviour and design of liquid storage tanks 

      Pappa, P.; Vasilikis, D.; Vazouras, P.; Karamanos, S. A. (2011)
      The paper examines some special issues on the structural behaviour of upright-cylindrical liquid storage tanks, which are widely used in industrial facilities and for water storage. Two main design standards are considered: ...

    • Seismic response of unanchored liquid storage tanks 

      Vathi, M.; Pappa, P.; Karamanos, S. A. (2013)
      Unanchored liquid storage tanks under strong seismic loading may exhibit uplifting of their bottom plate, with significant effects on the dynamic behavior and the structural integrity of the tank. In the present paper, ...

    • 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 ...

    • 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 ...