Computational tools and design of lightweight composite hydrogen tanks
Licentiatavhandling, 2025
In the first paper, a numerical framework for modelling tow-based discontinuous composites (TBDCs) is developed using a multi-scale approach and computational homogenisation to predict the elastic properties from statistical volume elements (SVEs). The framework is validated for three TBDC material systems, i.e. thick, thin, and ultra-thin tow systems.
The second paper exploits the developed models to study the significance of material design parameters both at tow and plate levels. Specifically, a parametric study based on this approach has been used to evaluate the impact of parameters such as the tow modulus, in-plane tow aspect ratio, tow thickness, plate size, and preferred fibre orientation distributions (FODs). A sensitivity analysis is performed to compare and quantify the effects. Key findings for future material optimisation are reported.
Finite element analysis
homogenisation
Discontinuous reinforcement
Tow-based composite
Mesostructural effects
Mechanical properties
Multiscale modelling
Examination
Författare
Luis Fernando Gulfo Hernandez
Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik
Inkluderade delarbeten
A 3D voxel-based mesostructure generator for finite element modelling of tow-based discontinuous composites
Composites Part B: Engineering,;Vol. 278(2024)
Artikel i vetenskaplig tidskrift
Luis Gulfo, Ioannis Katsivalis, Leif E. Asp, Martin Fagerström. A parametric study on the mesostructure design and stiffness of tow-based discontinuous composites using a voxel finite element model.
Manuskript
Kategorisering
Drivkrafter
Hållbar utveckling
Styrkeområden
Transport
Materialvetenskap
Ämneskategorier (SSIF 2025)
Solid- och strukturmekanik
Kompositmaterial och kompositteknik
Teknisk mekanik
Övrigt
Utgivare
Chalmers