What is Digimat-VA (“Virtual Allowables”)?
- Productive solution to predict virtual allowables for a full test matrix in just few clicks,
- Unique integration of nonlinear multi-scale modeling, progressive failure and finite element analysis technologies,
- Process, material and testing variability modelling,
- Intuitive and easy to use interface.
Digimat-VA combines efficient micromechanical modeling, progressive failure analysis, and non-linear finite element analysis (FEA) in an integrated solution. With Digimat-VA, engineers can compare laminates stiffness and strength virtually before going into the extensive and expensive process of developing physical allowables. They define their test matrix through Digimat-VA’s “point-and-click” interface, and the software generates the virtual allowable based on the test parameters and the ply data.
Designing lightweight continuous fiber reinforced plastics (CFRP) structures with confidence requires access to allowables values. Allowables generation is extremely time and money consuming. Various layups, coupon tests and environment conditions must be covered for each characterized material system. Each test configuration must be repeated many times to obtain a statistical evaluation of the mechanical property…
…Virtual allowables can be predicted thanks to advanced multi-scale simulation. By combining mean-field homogenization, progressive failure, non-linear FEA analysis and stochastic methods, allowables become accessible at a fraction of the usual cost and time…
…The comparison with experiment reveals that both mean and B-Basis values are generally predicted within 10 % of error compared to experimental response.
"Digimat-VA reduces the number of coupon tests for material qualification, accelerates the trade-off studies in the down-selection process for certifying new materials and improves the aircraft performance identifying the critical material and manufacturing variables to maximize material performance for a given application. The introduction of a dedicated computer-aided environment, as Digimat-VA, in regulations can have clear benefits potential in terms of reduction in coupon tests by more than 65%."− Salvatore Russo, New Airframe Technologies, Alenia Aermacchi, A Finmeccanica Company
"In a matter of a few clicks, you can define hundreds of coupon simulations using state-of-the-art multi-scale modeling, and take into account the variability of your composite material and process to predict composite A and B-basis values."− Dr Roger Assaker, CEO of e-Xstream engineering, Chief Material Strategist of MSC Software