Interactive multibody simulation in augmented reality

In this paper, the authors discuss a methodology to enhance multibody systems simulations using Augmented Reality (AR) implementation. The AR deals with the use of live video imagery which is digitally processed and augmented by the addition of computer generated graphics. The purpose is to illustrate how recent developments in computer-aided design and augmented reality can improve the realism and interactivity when simulating the movement of digital mock-ups. The paper discusses hardware and software implementations and an overview of several illustrative examples. The basic idea is described starting from a simple simulation of a falling body subjected to gravity with the initial conditions set interactively by the user. Then, a more complex interactive simulation of the kinematics of a robot whose end-effector can be grabbed and moved by the user is presented. Finally, the real time dynamic simulation of a slider crank mechanism is discussed. The integration between AR and multibody simulation has revealed to be very useful for didactical purposes and collaborative design.