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Meggie Cheng

dblp:272/7445 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2020
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Graphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Computer animation and physical simulation · 100%

Topics — the 2 heaviest of 2, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Computer animation and physical simulation › fracture simulation
dynamic fracture animation
0.412020
AnisoMPM: animating anisotropic damage mechanics · ACM Trans. Graph. 2020
Computer animation and physical simulation › particle-based simulation
material point method
0.412020
AnisoMPM: animating anisotropic damage mechanics · ACM Trans. Graph. 2020

Methods — techniques the papers use, named apart from their topics

structural tensor · 0.4hyperelasticity · 0.4galerkin weak form · 0.4continuum damage mechanics · 0.4QR decomposition · 0.4
YearPublicationVenuePosition
2020 AnisoMPM: animating anisotropic damage mechanics
abstract
Dynamic fracture surrounds us in our day-to-day lives, but animating this phenomenon is notoriously difficult and only further complicated by anisotropic materials---those with underlying structures that dictate preferred fracture directions. Thus, we present AnisoMPM: a robust and general approach for animating the dynamic fracture of isotropic, transversely isotropic, and orthotropic materials. AnisoMPM has three core components: a technique for anisotropic damage evolution, methods for anisotropic elastic response, and a coupling approach. For anisotropic damage, we adopt a non-local continuum damage mechanics (CDM) geometric approach to crack modeling and augment this with structural tensors to encode material anisotropy. Furthermore, we discretize our damage evolution with explicit and implicit integration, giving a high degree of computational efficiency and flexibility. We also utilize a QR-decomposition based anisotropic constitutive model that is inversion safe, more efficient than SVD models, easy to implement, robust to extreme deformations, and that captures all aforementioned modes of anisotropy. Our elasto-damage coupling is enforced through an additive decomposition of our hyperelasticity into a tensile and compressive component in which damage is used to degrade the tensile contribution to allow for material separation. For extremely stiff fibered materials, we further introduce a novel Galerkin weak form discretization that enables embedded directional inextensibility. We present this as a hard-constrained grid velocity solve that poses an alternative to our anisotropic elasticity that is locking-free and can model very stiff materials.
Joshuah Wolper, Yunuo Chen 0001, Minchen Li, Yu Fang 0010, Ziyin Qu, Jiecong Lu, Meggie Cheng, Chenfanfu Jiang
ACM Trans. Graph.7