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Improvement and val...
Improvement and validation of a physically based model for the shear and transverse crushing of orthotropic composites
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- Costa, Sergio, 1987 (author)
- RISE,SICOMP,Chalmers University of Technology, Sweden
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- Bru, Thomas, 1990 (author)
- RISE,SICOMP,Chalmers University of Technology, Sweden
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- Olsson, Robin, 1958 (author)
- RISE,SICOMP
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- Portugal, André (author)
- INOV Contacto Programme, Portugal
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(creator_code:org_t)
- 2018-10-25
- 2019
- English.
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In: Journal of Composite Materials. - : SAGE Publications. - 1530-793X .- 0021-9983. ; 53:12, s. 1681-1696
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Abstract
Subject headings
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- This paper details a complete crush model for composite materials with focus on shear dominated crushing under a three-dimensional stress state. The damage evolution laws and final failure strain conditions are based on data extracted from shear experiments. The main advantages of the current model include the following: no need to measure the fracture toughness in shear and transverse compression, mesh objectivity without the need for a regular mesh and finite element characteristic length, a pressure dependency of the nonlinear shear response, accounting for load reversal and some orthotropic effects (making the model suitable for noncrimp fabric composites). The model is validated against a range of relevant experiments, namely a through-the-thickness compression specimen and a flat crush coupon with the fibres oriented at 45° and 90° to the load. Damage growth mechanisms, orientation of the fracture plane, nonlinear evolution of Poisson's ratio and energy absorption are accurately predicted.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Geofysisk teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Geophysical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Keyword
- friction
- Crushing
- damage mechanics
- finite element analysis
Publication and Content Type
- art (subject category)
- ref (subject category)
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