School of Civil Engineering

Advanced computational modelling for the accurate and efficient simulation of structural impact problems

The simulation of structural impact problems is a challenging task that prominent numerical methods struggle to resolve. The most popular engineering simulation scheme, the Finite Element Method (FEM), is limited by mesh tangling under large impact deformations due to its rigid element connectivity. Although flexible meshfree methods are well suited for modelling sudden large deformations and surface creation, they are typically less accurate and efficient than the FEM. The Material Point Method (MPM) is a hybrid particle-mesh scheme conceptually placed between mesh-based and meshfree methods, combining aspects of both and showing great promise in solving structural impact problems involving history-dependent material models.

This research focuses on developing an enhanced MPM formulation that mitigates typical formulation inaccuracies (the ’grid-crossing’ error), increasing accuracy and efficiency with MPM-FEM coupling, reducing computational expense via mixed time integration and implementing advanced material models. The achievement of these research goals is anticipated to produce a numerical framework capable of robustly studying consequential structural impact problems with accuracy in a timely manner.

When
09.00am - 10.00am

Wednesday, 12 June 2019

Where

Room 502
Advanced Engineering Building (49)