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Updated: Jun 23, 2025
09:32
Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores
Published on: November 20, 2014
12.2K
Plastically Deformed Tubes Subjected to Mechanical Expansion Processes.
Zijian Zhao1, Abdel-Hakim Bouzid1, Nor Eddine Laghzale2
1Ecole de Technologie Superieure, 1100 Notre-Dame Ouest, Montreal, QC H3C 1K3, Canada.
Materials (Basel, Switzerland)
|June 19, 2024
Summary
This study introduces a new analytical method to calculate stresses and strains in expanded tubes, validated by finite element analysis and experiments. The findings improve understanding of tube expansion for engineering applications.
Area of Science:
- Engineering Mechanics
- Materials Science
Background:
- Ensuring structural integrity of expanded tubes is vital to prevent stress corrosion cracking.
- Current theoretical methods for stress distribution in tubes expanded by ogive shapes are limited.
Purpose of the Study:
- To develop and validate a novel analytical approach for estimating stresses and strains in mechanically expanded tubes.
- To analyze the expansion of 3/8 inch copper and stainless-steel tubes using an expanding bullet.
Main Methods:
- A novel analytical model segments the tube into three zones, applying distinct theories to each.
- Validation using an axisymmetric finite element model with multi-linear kinematic hardening.
- Measurement of tangential and longitudinal strains during tube expansion.
Main Results:
- The analytical model accurately estimates stresses and strains in expanded tubes.
- The model's prediction of the expanding mandrel's push force shows good agreement with numerical simulations and experimental data.
Conclusions:
- The developed analytical method provides a reliable approach for analyzing stress states in expanded tubes.
- This research enhances the understanding of mechanical tube expansion processes, crucial for structural integrity.
Keywords:
beam on elastic foundationdeformation energyelasto-plastic material behaviorfinned tubestube expansionMore Related Videos
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