Simple constitutive models to represent the effect of mechanical damage and abrasion on the short-term load-strain response of geosynthetics

Paula, António Miguel; Pinho-Lopes, Margarida

Publicação

Simple constitutive models to represent the effect of mechanical damage and abrasion on the short-term load-strain response of geosynthetics

2018Comunicação em conferência

dc.contributor.author	Paula, António Miguel
dc.contributor.author	Pinho-Lopes, Margarida
dc.date.accessioned	2020-04-30T10:23:19Z
dc.date.available	2020-04-30T10:23:19Z
dc.date.issued	2018
dc.description.abstract	This paper discusses simple constitutive models to represent the tensile response of two geosynthetics (geo-textile GTX and reinforcement geocomposite GCR) and the influence of two endurance durability agents on that response: mechanical and abrasion damage, acting independently and combined. The damage was in-duced in laboratory under standard conditions. The polynomial models approximated the short-term tensile experimental data very well and better than the hyperbolic-based models. The polynomial model parameters have no physical meaning. The equations from the literature did not always represent the parameters of hy-perbolic-based models and their physical meaning. The secant stiffness for 5% strain obtained from the models was conservative for GTX and too optimistic for GCR. No clear relationship was found between the model parameters of the undamaged samples and the samples submitted to mechanical damage (MEC), abrasion damage (ABR) or mechanical and abrasion damage (MEC+ABR). The model parameters were normalised to the reduction factors for damage and to the tensile strength of each sample. A unique trend be-tween parameters was not found. For GTX the normalised parameter b/Tult,sample was reduced after damage and all damaged samples exhibited a similar value.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Paula, António Miguel; Pinho-Lopes, Margarida (2018). Simple constitutive models to represent the effect of mechanical damage and abrasion on the short-term load-strain response of geosynthetics. In 9TH EUROPEAN CONFERENCE ON NUMERICAL METHODS IN GEOTECHNICAL ENGINEERING. University of Porto. Faculty of Engineering, Portugal , Porto. p.279-287	pt_PT
dc.identifier.isbn	978-1-138-33198-3
dc.identifier.uri	http://hdl.handle.net/10198/21882
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Taylor & Francis Group	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.title	Simple constitutive models to represent the effect of mechanical damage and abrasion on the short-term load-strain response of geosynthetics	pt_PT
dc.type	conference paper
dspace.entity.type	Publication
oaire.citation.conferencePlace	University of Porto. Faculty of Engineering, Portugal , Porto	pt_PT
oaire.citation.endPage	287	pt_PT
oaire.citation.startPage	279	pt_PT
oaire.citation.title	9TH EUROPEAN CONFERENCE ON NUMERICAL METHODS IN GEOTECHNICAL ENGINEERING	pt_PT
person.familyName	Paula
person.givenName	António Miguel
person.identifier.ciencia-id	D115-1763-07B0
person.identifier.orcid	0000-0003-4788-8644
rcaap.rights	restrictedAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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