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A note on the nonli...
A note on the nonlinear mechanical behavior of planar random network structures subjected to in-plane compression
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- Åslund, Pär, 1984- (författare)
- Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),FSCN
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- Isaksson, Per, 1968- (författare)
- Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),FSCN
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(creator_code:org_t)
- 2011-10-12
- 2011
- Engelska.
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Ingår i: Journal of composite materials. - : SAGE Publications. - 0021-9983 .- 1530-793X. ; 45:25, s. 2697-2703
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The microstructural effect on the mechanical behavior of idealized two-dimensional random fiber networks subjected to in-plane compression is studied. A finite element model utilizing nonlinear beam elements assuming a linearly elastic material is developed. On a macroscopic level, random fiber networks often display an asymmetric material behavior when loaded in tension and compression. In mechanical models, this nonlinearity is traditionally described using continuum elastic-inelastic and/or damage models even though using a continuum approach risks overlooking microstructural effects. It is found that even though a linear elastic material model is used for the individual fibers, the network gives a nonlinear response in compression. The nonlinearity is found to be caused by buckling of individual fibers. This reversible nonlinear mechanism is limited in tensile loading and hence offers an alternative explanation to the global asymmetry of random fiber networks.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- random fiber network; compression; mechanical behavior; nonlinearity
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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