This paper presents an LS-DYNA ® simulation of the impact event when a golf club hits a golf ball. This is a challenging subject for finite element simulations because it is characterized by high strain rate behavior: the impact occurs within milliseconds and the golf ball experiences very large deformation during this period because of the ball’s polymeric shell and core. The simulation strate...

The ball and beam system is a laboratory equipment with high nonlinearity in its dynamics. The aims of this research are to model the ball and beam system considering nonlinear factors and coupling effect and to design controllers to control the ball position. The LQR is designed considering two Degrees-of-Freedom and

This paper describes a versatile, robust, and parametric ball animation model that can be used in many types of interactive Virtual Reality (VR) environments. The generic model is particularly useful for animation of ball-like objects such as tennis balls, footballs, or darts, and for networked collaborative environments where low frame rates, network delays and information losses complicate co...

This paper investigates two fundamental structures for biped robots and a control strategy to achieve stable biped running. The first biped structure contains straight legs with telescopic springs, and the second one contains knees with compliant elements in parallel with the motors. With both configurations we can use a standard linear discrete-time state-feedback control strategy to achieve a...