We encounter different materials on every day, and these materials are often being transformed in very different ways. One type of such transformations is called dynamic fracture, and this phenomenon is famous for the difficulty associated with attempts to animate this physical process using computer graphics and image processing algorithms, especially when dealing with anisotropic materials.
In a recent paper published by Association for Computing Machinery, a team of scientists from the University of Pennsylvania present a new method to animate dynamic fractures, which works for isotropic, transversely isotropic and orthotropic materials.
The method called AnisoMPM includes algorithms and numeric geometric modeling framework that are used to calculate the response of the simulated (i.e. animated) material by evaluating its key physical parameters, thereby bringing more realism to how different kinds of material damage processes are animated during creation of visual effects.
AnisoMPM clearly stands as a robust and general approach to animating dynamic fracture of not only isotropic materials, but also the significantly more complex transversely isotropic and orthotropic materials. Furthermore, AnisoMPM offers both the efficient and easy to implement explicit damage and the stable and robust implicit damage, giving flexibility based on the desired fracture behavior and simulation constraints. Finally, we believe AnisoMPM also poses numerous exciting directions for future study, ranging from an intuitive interface for artistic control to the exploration of other types of fracture effects.
Link to the research article: AnisoMPM: Animating Anisotropic Damage Mechanics, Joshuah Wolper, Yunuo Chen, Minchen Li, Yu Fang, Ziyin Qu, Jiecong Lu, Meggie Cheng, Chenfanfu Jiang (SIGGRAPH 2020)