scholarly journals Influence of transcrystalline layer on finite element mesoscale modeling of polyamide 6 based single polymer laminate composites

2020 ◽  
Vol 232 ◽  
pp. 111555 ◽  
Author(s):  
Shafagh D. Tohidi ◽  
Ana Maria Rocha ◽  
N. Dourado ◽  
Mohammadali Rezazadeh ◽  
Nguyễn T. Quyền ◽  
...  
Keyword(s):  
Finite Element ◽  
Polyamide 6 ◽  
Mesoscale Modeling ◽  
Laminate Composites ◽  
Transcrystalline Layer

scholarly journals Mechano-morphological studies of polyamide 6 based single polymer laminate composites prepared by different reactive processing techniques

2019 ◽  
Vol 79 ◽  
pp. 106017
Author(s):  
Shafagh Dinparast Tohidi ◽  
Zlatan Z. Denchev ◽  
Ana Maria Rocha ◽  
Nadya V. Dencheva ◽  
Bernhard Engesser ◽  
...  
Keyword(s):  
Polyamide 6 ◽  
Reactive Processing ◽  
Laminate Composites ◽  
Morphological Studies ◽  
Processing Techniques

Modeling Fracture of Fiber Reinforced Polymer

2011 ◽  
Vol 488-489 ◽  
pp. 150-153
Author(s):  
Joško Ožbolt ◽  
Vesna Lacković ◽  
Joško Krolo
Keyword(s):  
Finite Element ◽  
Strength Properties ◽  
Irreversible Thermodynamics ◽  
Constitutive Law ◽  
Fiber Reinforced ◽  
Laminate Composites ◽  
Strain Compatibility ◽  
Modeling Fracture ◽  
The Matrix ◽  
Band Method

In the present paper 3D rate sensitive constitutive model for modeling of laminate composites is presented. The model is formulated within the framework of continuum mechanics based on the principles of irreversible thermodynamics. The matrix (polymer) is modeled using 3D rate sensitive microplane model. For modeling of fibers (glass) a uni-axial constitutive law is employed. The fibers are assumed to be uniformly smeared-out over the matrix. The formulation is based on the assumption of strain compatibility between matrix and fibers. To account for the de-lamination of fibers, the matrix is represented by the periodically distributed bands with non-uniform strength properties over the band width. The input parameters of the model are defined by the mechanical properties of matrix and fibers (elastic properties, strength and fracture energy), the volume content of fibers and by their orientation in 3D space. The model is implemented into a 3D finite element code. To assure mesh objective results, the localization limiter is based on the assumption of constant energy dissipation within each finite element, i.e. the crack band method is used. The performance of the model is shown on one numerical example for specimens loaded in uni-axial tension. It is demonstrated that the proposed model is able to realistically predict the resistance and failure mode of complex fiber-reinforced composite for different orientation of fibers.

Elastic Properties and Failure Behavior of Tiled Laminate Composites

2018 ◽  
Vol 774 ◽  
pp. 564-569 ◽  
Author(s):  
Wouter de Corte ◽  
Arne Jansseune ◽  
Wim van Paepegem ◽  
Jan Peeters
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Elastic Properties ◽  
Fatigue Loading ◽  
Failure Behavior ◽  
Element Analysis ◽  
Laminate Composites ◽  
Permanent Formwork ◽  
Laminate Theory ◽  
Highly Loaded

This paper focuses on the elastic properties and the failure behavior of tiled laminate composites. Such laminates, in which the plies are not parallel to the outer surfaces are found in InfraCore® based GFRP panels. This technology is developed for the construction of a robust FRP panel that is applicable for highly loaded structures, e.g. for bridges or lock gates. In general, the drawback in traditional FRP sandwich structures has always been debonding of skin and core. Such a debonding problem may occur after impact, followed by fatigue loading. Through the use of the InfraCore® technology, debonding is no longer possible, as multiple overlapping Z-shaped and two-flanged web structures are alternated with polyurethane foam cores acting as non-structural permanent formwork. Consequently, the fibers in the upper and lower skins as well as in the vertical webs run in all directions, especially in the connection between them, rendering a resin-dominated crack propagation impossible. As a result of the integration of core and skin reinforcement, a skin material is created in which the reinforcement is not parallel to the outer surfaces, but at a small angle. Such stacking is called a tiled laminate (TL), as opposed to plane-parallel (PP) and is not fully described by the classic laminate theory. In the paper, finite element analysis is used to assess the effect of the ply angle and the interlaminar properties on the assessment of stiffness and failure behavior of a tiled laminate.

scholarly journals Micromechanical finite element parametric study of polyamide 6 based single polymer composites reinforced by woven textile structures

2019 ◽  
Vol 225 ◽  
pp. 111088
Author(s):  
Shafagh D. Tohidi ◽  
Ana Maria Rocha ◽  
Bernhard Engesser ◽  
Nadya V. Dencheva ◽  
Zlatan Denchev
Keyword(s):  
Finite Element ◽  
Polymer Composites ◽  
Parametric Study ◽  
Polyamide 6 ◽  
Woven Textile

scholarly journals Preparation and properties of polyamide-6-based thermoplastic laminate composites by a novel in-mold polymerization technique

2013 ◽  
Vol 131 (8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Nadya Dencheva ◽  
Ana S. Sampaio ◽  
Filipa M. Oliveira ◽  
António S. Pouzada ◽  
Antonio M. Brito ◽  
...  
Keyword(s):  
Polyamide 6 ◽  
Laminate Composites
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