Presentation
Real2Sim: Visco-elastic parameter estimation from dynamic motion
SessionData - Driven Dynamics
Event Type
Technical Papers
TimeWednesday, 20 November 201914:15 - 14:41
LocationPlaza Meeting Room P1
DescriptionThis paper presents a method for optimizing visco-elastic material parameters of a finite element simulation to best approximate the dynamic motion of real-world soft objects.
We compute the gradient with respect to the material parameters of a least-squares error objective function using either direct sensitivity analysis or an adjoint state method.
We then optimize the material parameters such that the simulated motion matches real-world observations as closely as possible.
In this way we can directly build a useful simulation model that captures the visco-elastic behaviour of the specimen of interest.
We demonstrate the effectiveness of our method on various examples such as numerical coarsening, custom-designed objective functions, and of course real-world flexible elastic objects made of foam or 3D printed lattice structures.
We compute the gradient with respect to the material parameters of a least-squares error objective function using either direct sensitivity analysis or an adjoint state method.
We then optimize the material parameters such that the simulated motion matches real-world observations as closely as possible.
In this way we can directly build a useful simulation model that captures the visco-elastic behaviour of the specimen of interest.
We demonstrate the effectiveness of our method on various examples such as numerical coarsening, custom-designed objective functions, and of course real-world flexible elastic objects made of foam or 3D printed lattice structures.