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Webtraining – Multiscale modeling with Abaqus
9 Mar, 2023 @ 10:00 am - 11:00 am
During this webtraining 4RealSim will introduce multiscale modeling, the benefits and how it is integrated in Abaqus.
4RealSim believes in continuous Abaqus learning and regularly organizes webtrainings for our customers. Join our webinar and learn more about Abaqus, get more confident in the usage and become more efficient!
Multiscale material modeling
The goal of multiscale material modeling is to predict material behaviors at the macro-level using information at smaller scales. The information can be communicated between scales from the bottom up; the microstructure of the composite material is represented by a Representative Volume Element (RVE), then a homogenization scheme is applied to the RVE, which provides a prediction of macro-constitutive behavior at a material point.
The information can also be communicated from a macro scale down to smaller scales by applying the macro-strain as a far-field strain to the RVE. The state of the constituents on the micro-level, such as strain and stress, are then updated, and the averaged quantities are communicated back to the material point at the macro-level.
Mean-field homogenization is based on analytical models of a single inclusion problem, and it gives an approximation of the averaged stresses and strains in each constituent of the composite. The averaged strain of each constituent is determined based on the specific homogenization method, which is based on assumptions of the interaction between inclusions and the matrix. Since only volume-averaged quantities are considered, this approach is unable to capture local stress concentration inside the RVE and the size effects of the inclusions; however, it is computationally efficient compared to the FE-RVE approach in which the RVE is modeled with a finite element model.
The mean-field homogenization approach gives good predictions for linear elastic composites. Since the homogenization is performed during the analysis, nonlinear and history-dependent behavior can be captured. However, in the case of highly nonlinear constituent materials, calibration is usually necessary for better predictions. If experimental results are not available, the results of an FE-RVE that represent details of the microstructure can be used as an alternative for calibration.
Who can attend the 4RealSim Abaqus webtraining?
This 4RealSim webtraining is intended for our Abaqus customers.