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Advances in simulation enable optimal use of composites

12 June 2020 • In Products
Advances in simulation enable optimal use of composites

e-Xstream engineering, part of Hexagon’s Manufacturing Intelligence division, has launched the latest version of its Digimat multi-scale material modelling software, extending its advanced composite design capabilities across all scales as part of the Hexagon 10X Integrated Computational Materials Engineering (ICME) solution.

Reducing the cost of developing new composites is a priority for materials suppliers and the manufacturers specifying composites, but material development remains highly complex because every aspect of a material system from the chemical composition of the resin to the manufacturing process affects final performance.

To manage this complexity, Digimat’s integration with molecular dynamics software has been enhanced to extend its micro-level capabilities to predict a material’s properties based on its chemical structure. On the meso-level, the direct engineering workflow for unidirectional composites has also been enhanced, enabling ply properties prediction based on their physical and virtual constituents.

The effect of defects, such as porosity or gaps from automatic fibre placement can now be characterised at the full-scale coupon level using the state-of-the-art progressive failure analysis (PFA) models developed in collaboration with Pr. Camanho. As a result, the margins-of-safety engineers use to optimise material use and lightweight parts may be optimised with greater confidence.

Furthermore, Digimat 2020 makes this advanced PFA modelling available within Marc, MSC Nastran as well as other structural analysis software via user subroutine, so that engineers can make detailed and accurate damage predictions of structures under load, reducing over engineering.

Design for manufacturing is also improved. New capabilities help manufacturers avoid costly tooling rework by embedding a digital twin of the composite manufacturing process from Digimat within thermo-mechanical finite element analyses tools such as Marc, Abaqus or LS Dyna. This open integration enables the designer to account for distortions introduced by processing and modify their mould design to achieve the required geometry.

www.e-xstream.com/whats-new-digimat-2020.0

Michael Tyrrell

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Michael Tyrrell

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Hexagon Manufacturing Intelligence software

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