Chapter
Apr 26, 2012
Constitutive Model for High Density Polyethylene to Capture Strain Reversal
Authors: Abdul Ghafar Chehab and Ian D. MooreAuthor Affiliations
Publication: Pipelines 2006: Service to the Owner
Abstract
Models available for estimating the rheological response of high density polyethylene (HDPE) are reviewed. A constitutive model combining elastic, viscoelastic, and viscoplastic components is proposed to calculate strain recovery and long term stress conditions in HDPE pipes pulled into place using trenchless construction methods. The ability of the new model to capture HDPE creep, relaxation, strain reversal, and strain accumulation and recovery during cyclic loading is examined by comparing simulations with experimental data. The new model is better able to provide response involving unloading and strain reversal. Temperature effects on the mechanical behaviour of HDPE are not considered in this paper.
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© 2006 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Constitutive relations
- Construction engineering
- Construction methods
- Density (material)
- Engineering fundamentals
- Engineering materials (by type)
- Geotechnical engineering
- Material mechanics
- Material properties
- Materials characterization
- Materials engineering
- Mathematics
- Plastics
- Polyethylene
- Rheology
- Strain
- Synthetic materials
- Trenchless technology
- Tunneling
- Tunnels
Authors
Affiliations
Abdul Ghafar Chehab
Research Assistant, GeoEngineering Centre at Queen's- RMC, Queen's University, Kingston, ON, K7L 3N6 Canada
Ian D. Moore
Professor and Canada Research Chair, GeoEngineering Centre at Queen's- RMC, Queen's University, Kingston, ON, K7L 3N6 Canada
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.