An Energy-Based Concept for Yielding of Multidirectional FRP Composite Structures Using a Mesoscale Lamina Damage Model

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dc.contributor.authorRahimian Koloor, Seyed Saeid
dc.contributor.authorKarimzadeh, Atefeh
dc.contributor.authorYidris, Noorfaizal
dc.contributor.authorPetrů, Michal
dc.contributor.authorAyatollahi, Majid Reza
dc.contributor.authorNasir Tamin, Mohd
dc.date.accessioned2020-01-08T07:11:50Z
dc.date.available2020-01-08T07:11:50Z
dc.date.issued2020
dc.description.abstractComposite structures are made of multidirectional (MD) fiber-reinforced polymer (FRP) composite laminates, which fail due to multiple damages in matrix, interface, and fiber constituents at different scales. The yield point of a unidirectional FRP composite is assumed as the lamina strength limit representing the damage initiation phenomena, while yielding of MD composites in structural applications are not quantified due to the complexity of the sequence of damage evolutions in different laminas dependent on their angle and specification. This paper proposes a new method to identify the yield point of MD composite structures based on the evolution of the damage dissipation energy (DDE). Such a characteristic evolution curve is computed using a validated finite element model with a mesoscale damage-based constitutive model that accounts for different matrix and fiber failure modes in angle lamina. The yield point of composite structures is identified to correspond to a 5% increase in the initial slope of the DDE evolution curve. The yield points of three antisymmetric MD FRP composite structures under flexural loading conditions are established based on Hashin unidirectional (UD) criteria and the energy-based criterion. It is shown that the new energy concept provides a significantly larger safe limit of yield for MD composite structures compared to UD criteria, in which the accumulation of energy dissipated due to all damage modes is less than 5% of the fracture energy required for the structural rupture.cs
dc.format.extent18 strancs
dc.identifier.doi10.3390/polym12010157
dc.identifier.orcid0000-0002-1820-6379 Rahimian Koloor, Seyed Saeid
dc.identifier.urihttps://dspace.tul.cz/handle/15240/154324
dc.identifier.urihttps://www.mdpi.com/2073-4360/12/1/157
dc.language.isocscs
dc.publisherMDPI
dc.relation.ispartofPolymers 2020
dc.subjectcomposite structurescs
dc.subjectmultidirectional FRP composite laminatescs
dc.subjectcomposite yieldingcs
dc.subjectdamage dissipation energycs
dc.subjectcontinuum damage modelcs
dc.subjectfinite element simulationcs
dc.titleAn Energy-Based Concept for Yielding of Multidirectional FRP Composite Structures Using a Mesoscale Lamina Damage Modelcs
local.accessopen access
local.identifier.publikace7006
local.relation.issue1
local.relation.volume12
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