Thesis of Elsa Flechon


Subject:
Simulation of deformable objects

Defense date: 09/12/2014

Advisor: Fabrice Jaillet
Coadvisor: Florence Zara

Summary:

My PhD work takes place in the context of the realization of a childbirth simulator that aims to assist the learning of medical gestures. For this, the organs involved during childbirth have to be modeled carefully. Next, we can simulate in a realistic and interactive way their behavior in 3D when submitted to internal or external interactions.
I go by Vincent Baudet work (LIRIS phD) which aimed to develop a io-mechanical model guided with an underlying mass-spring system. The parameters of this latter are defined by the mechanical properties of the simulated object (Young modulus ans Poisson's ratio).
The key notion of this work is the introduction of corrective forces mandatory to allow the integration of Poisson's ratio in the parameterization of the mass-spring system.
Currently, I am implementing this model within the SOFA framework. I have proposed two improvements to this model in applying the corrective forces and in establishing forces for volume conservation in the case of an incompressible material (like organs). Improvements in interactivity could be achieved by working on the mechanical model, on the mesh of the object to simulate (refinement, multi-resolution), on the parallelization...
In this continuity, my thesis work will be oriented either to the topic of dynamically refining meshes or on the management of collisions.