The objective of the present work is the computational micromechanical analysis of unidirectional fiber-reinforced composites, considering defects. The micromechanical model uses refined beam theories based on the Carrera unified formulation (CUF) and involves using the component-wise (CW) approach, resulting in a high-fidelity model. Defects are introduced in the representative volume element (RVE) in the form of matrix voids by modifying the material properties of a certain quantity of the Gauss points associated with the matrix. The quantity of Gauss points thus modified is based on the required void volume fraction, and the resulting set is prescribed a material property with negligible stiffness to model voids. Two types of void distribution are considered in the current work—randomly distributed voids within the matrix and voids clustered in a region of the RVE. The current study investigates the influence of the volume fraction of voids present in the matrix and their distribution throughout the RVE domain on the macroscale mechanical response. Material nonlinearity is considered for the matrix phase. Numerical assessments are performed to investigate the influence of the volume fraction and the distribution of the voids on the macroscopic response.

Elastoplastic Micromechanical Analysis of Fiber‑Reinforced Composites with Defects / Nagaraj, M. H.; Kaleel, I.; Carrera, E.; Petrolo, M.. - In: AEROTECNICA MISSILI & SPAZIO. - ISSN 2524-6968. - ELETTRONICO. - 101:1(2022), pp. 53-59. [10.1007/s42496-021-00103-4]

Elastoplastic Micromechanical Analysis of Fiber‑Reinforced Composites with Defects

M. H. Nagaraj;I. Kaleel;E. Carrera;M. Petrolo
2022

Abstract

The objective of the present work is the computational micromechanical analysis of unidirectional fiber-reinforced composites, considering defects. The micromechanical model uses refined beam theories based on the Carrera unified formulation (CUF) and involves using the component-wise (CW) approach, resulting in a high-fidelity model. Defects are introduced in the representative volume element (RVE) in the form of matrix voids by modifying the material properties of a certain quantity of the Gauss points associated with the matrix. The quantity of Gauss points thus modified is based on the required void volume fraction, and the resulting set is prescribed a material property with negligible stiffness to model voids. Two types of void distribution are considered in the current work—randomly distributed voids within the matrix and voids clustered in a region of the RVE. The current study investigates the influence of the volume fraction of voids present in the matrix and their distribution throughout the RVE domain on the macroscale mechanical response. Material nonlinearity is considered for the matrix phase. Numerical assessments are performed to investigate the influence of the volume fraction and the distribution of the voids on the macroscopic response.
File in questo prodotto:
File Dimensione Formato  
NKCP_ATMS_2021.pdf

non disponibili

Descrizione: Pre-print
Tipologia: 1. Preprint / submitted version [pre- review]
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 2.08 MB
Formato Adobe PDF
2.08 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
NKCP_ATMS_2021_Revised.pdf

Open Access dal 09/11/2022

Descrizione: Post-print
Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: PUBBLICO - Tutti i diritti riservati
Dimensione 2.45 MB
Formato Adobe PDF
2.45 MB Adobe PDF Visualizza/Apri
NKCP_ATMS_2022.pdf

non disponibili

Descrizione: Online version
Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 2.19 MB
Formato Adobe PDF
2.19 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2959982