Modeling and animation of brittle fracture in three dimensions
Author
Küçükyılmaz, Ayşe
Advisor
Özgüç, Bülent
Date
2007Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
This thesis describes a system for simulating fracture in brittle objects. The
system combines rigid body simulation methods with a constraint-based model
to animate fracturing of arbitrary polyhedral shaped objects under impact. The
objects are represented as sets of masses, where pairs of adjacent masses are connected
by a distance-preserving linear constraint. The movement of the objects
is normally realized by unconstrained rigid body dynamics. The fracture calculations
are only done at discrete collision events. In case of an impact, the forces
acting on the constraints are calculated. These forces determine how and where
the object will break.
The problem with most of the existing fracture systems is that they only
allow simulations to be done offline, either because the utilized techniques are
computationally expensive or they require many small steps for accuracy. This
work presents a near-real-time solution to the problem of brittle fracture and a
graphical user interface to create realistic animations.
Keywords
Physically based modelingReal-time computer animation
Brittle fracture
Plastic deformation
Crack formation
Dynamics