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Monotonic, low-cycle fatigue and ultra-low cycle fatigue behaviours of the X52, X60 and X65 piping steels grades

Monotonic, low-cycle fatigue and ultra-low cycle fatigue behaviours of the X52, X60 and X65 piping steels gradesSeismic actions, soil settlements and landslides, fluctuations in permafrost layers, accidental loads and reeling may be responsible for large plastic deformations and widespread yielding of pipelines, which may lead to damage or failure, either due to monotonic loading or due to cyclic plastic strain fluctuations of high amplitude and short duration (Ni <~100 cycles).

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Nautilus Rotary Test Rig

Nautilus Rotary Test RigPDL engineers provided computational fluid dynamics (CFD) consultancy support to the project through the development of validated models using the ANSYS CFX package complete with a customised graphical user interface (GUI) and a sub-modelling approach

Category: PDL Case Studies / Document PDF (262.05 KB) Download

Finite Element Analysis of Cyclically-Loaded Steel Pipes During Deep Water Reeling installation

Finite Element Analysis of Cyclically-Loaded Steel Pipes During Deep Water Reeling installationUsing advanced material models and finite element tools, the present study examines the effect of cyclic loading due to reeling on the mechanical behavior of thick-walled seamless steel pipes. In particular, it examines the effects of reeling on cross-sectional ovalization and the corresponding material anisotropy and, most importantly on pipe resistance against high external pressure and pressurized bending.

Category: PDL Research and Collaboration / Document PDF (174.54 KB) Download

Numerical Simulation of UOE Pipe Process and its Effect on Pipe Mechanical Behaviour in Deep-Water Applications

Numerical Simulation of UOE Pipe Process and its Effect on Pipe Mechanical Behaviour in Deep-Water ApplicationsThick-walled steel pipes during their installation in deep-water are subjected to a combination of loading in terms of external pressure, bending and axial tension, which may trigger structural instability due to excessive pipe ovalization with catastrophic effects.

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Paper Handling and Media Transportation: ATM 3

Paper Handling and Media Transportation: ATM 3PDL engineers carried out a design and analysis project to develop a compact keypad cover mechanism for a 'drive-up' ATM. The keypad cover was required to conceal a pin code keypad, which under normal use would be superseded by a touch screen. When required, the keypad cover should quickly and reliably retract.

Category: PDL Case Studies / Document PDF (492.13 KB) Download

Paper Handling and Media Transportation: ATM 2

Paper Handling and Media Transportation: ATM 2PDL engineers supported a world leader in consumer transaction technologies and specifically in the supply of automated teller machines (ATM).

Category: PDL Case Studies / Document PDF (396 KB) Download

Paper Handling and Media Transportation: ATM 1

Paper Handling and Media Transportation: ATM 1PDL engineers carried out a computational fluid dynamics (CFD) analysis using ANSYS CFX to assess the flow and temperature distribution in a fan and display system incorporated within an ATM to predict and mitigate screen misting.

Category: PDL Case Studies / Document PDF (351.58 KB) Download

Numerical Modelling of Steel Pipelines subjected to severe Monotonic and Cyclic Straining

Numerical Modelling of Steel Pipelines subjected to severe Monotonic and Cyclic StrainingThe paper is focused on the analysis of existing code procedures for strain based design and to their comparison with advanced criteria for monotonic and cyclic loading.

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Finite element Analysis of UOE Pipes under External Pressure and Bending

Finite element Analysis of UOE Pipes under External Pressure and BendingIn the present study, the effect of UOE line pipe manufacturing process on the bending response of externally-pressurized thick-walled pipes is examined, using finite element simulation tools

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Structural performance of Steel Pipe Tee-Junctions

Structural performance of Steel Pipe Tee-JunctionsThe 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 tests under constant and increasing amplitude displacement-controlled loading schemes leading to low-cycle fatigue failure.

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Keywords for: PDL Publications

case studies, presentations, research and development, PDL, PDL Group, PDL Solutions, reduce development costs, mitigate risk, engineering design analysis, consultancy services, Global dynamic analysis, Orcaflex, Finite Element Analysis, FEA, Computational Fluid Dynamics, CFD, Engineering Design, CAD, Multibody Dynamics, RecurDyn