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OMAE2014-23507

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by

Claudio Paz

on 22 May 2014

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Transcript of OMAE2014-23507

Material Modeling
Collapse Analysis
Propagation Analysis
Introduction
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
Geometries
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis.
OMAE2014-23507
Conclusions
Results
Acknowledgement
The authors acknowledge the financial support by:


Sinochem Brazil;

Petrobras;

National Petroleum Agency of Brazil (ANP);

Research and Project Financial Support of Brazil (FINEP);

China Scholarship Council.
Thank you!
Any question: claudiopaz@lts.coppe.ufrj.br
Our research: http://www.lts.coppe.ufrj.br
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).
How to calculate SHCC's
parameters?
Get the geometries and initial imperfections;

The measurement was performed with the aid of FARO's portable measuring arm each 500 mm than 6000 mm of the tube;

The ovality is determined with the following expression:
33rd International Conference on Ocean, Offshore and Arctic Engineering,
San Francisco, CA, June 8-13, 2014.
Sandwich Pipes With Strain Hardening Cementitious (SHCC). Numerical Analysis (OMAE2014-23507).
Introduction

Geometries

Material Modeling

Collapse Analysis

Propagation Analysis

Reel-lay Installation Analysis

Results

Conclusions
The average of results will be used to SHCC numerical analysis with Drucker Prager model.

Stainless Steel (304) modeling by Chen [4]: J2-flow with isotropic hardening.









The big bang of the offshore exploration in deep water at Brazil: Pre-salt case:

Large distances from shore (average 186 miles);

High pressures ;

The low temperature (5ºC).







Alternative solutions for subsea pipelines.
Pipe-in-Pipe x Sandwich Pipe
2D quarter model with CPEG8R element mesh;

Analysis used to mesh sensitivity for circumferential and radial direction;

Symmetric BCs in x and y;

Riks method.
Collapse Analyses
Reeling Installation Analyses
Propagation Analyses
A nonlinear finite element model;

3D with C3D8I element type;

F3D4 Fluid element;

A model length of 10D;

The initial imperfection with 5%;

Symmetric planes, as indicated at down figure.

Reel-lay Installation Analysis
Sandwich Pipes With Strain Hardening Cementitious Composites (SHCC). Numerical Analysis (OMAE2014-23507).

3D numerical model represents the reel-lay simulator at Subsea Technology Laboratory;

Kinematic hardening plasticity model (Steel stainless);

Half-length and half-transverse section symmetry conditions were considered;

The displacements are in Y direction on control point;
Schematic view of the pipe been reeled (a) and unreeled/straighten (b).
SHCC can be used for a new core material for SP;

The good correlation between numerical and experimental results demonstrates that the numerical models can accurately predict the mechanical behavior of the sandwich pipes;

More bending experimental tests will help get better correlations in straightening process. Although the numerical model can calculate the maximum strain in reeling process;

The next step is start the parametric study and calculate the costs to fabricate this technology.
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