Impact is indispensable in robotic manipulation tasks in which objects and/or manipulators move at high speeds. Applied research using impact has been hindered by underdeveloped computational foundations for rigid body collision. This paper studies the computation of tangential impulse as two rigid bodies in the space collide at a point with both tangential compliance and friction. It extends S...

‎The water wave generation by wave paddle and a freely falling rigid body are examined by using an Incompressible Smoothed Particle Hydrodynamics (ISPH)‎. ‎In the current ISPH method‎, ‎the pressure was evaluated by solving pressure Poisson equation using a semi-implicit algorithm based on the projection scheme and the source term of pressure Poisson equation contains both of divergence free ve...

Ground vibrations near railway lines are generated by the forces that acting between wheel and rail. It seems to be a straight forward assumption vehicle dynamics important for level frequencies of excitation forces. Different phenomena analysed their role in ground vibrations: rigid body modes bogies, elastic (bending) car body, wheelset. The theoretical analyses use models, simplified detaile...

Classical flight control design techniques treat the aircrafts as rigid bodies. Extra effort and time is required for the development of a separate vibration controller that addresses the flexible nature of the aircraft. Researchers have concentrated in developing integrated design techniques where a single controller is designed to provide satisfactory control of the rigid modes, and vibration...

The ability to infer dynamic motions from an equilibrium (static) conformation of a protein can be essential in establishing structure– function relationships. In particular, the low-frequency motions are of functional interest because statistical mechanics predicts these motions will have the largest amplitudes. In this paper, we address the computational cost of normal mode analysis (NMA) app...

The paper studies the stability and control of radial deployment an electric solar wind sail with consideration high-order modes elastic tethers. is modeled by combining flexible tether dynamics, rigid-body dynamics central spacecraft, flexible-rigid kinematic coupling. process nodal position finite element method in arbitrary Lagrangian–Eulerian framework. A symplectic-type implicit Runge–Kutt...

Langevin mode theory and the coarse-grained elastic network model (ENM) for proteins are combined to yield the Langevin network model (LNM). Hydrodynamic radii of 6 A were assigned to each alpha-carbon on the basis of matching experimental translational and rotational diffusion constants of lysozyme, myoglobin, and hemoglobin with those calculated using a rigid body bead model with hydrodynamic...

A common problem in aerodynamic and astrodynamic engineering is accurate modeling of systems that combine flexible and rigid bodies with a controller. Mechanical and control simulators typically represent only rigid bodies and require preliminary transformation of flexible body problems into a suitable approximation. Analytical methods and commercial off-the-shelf (COTS) flexible-body analysis ...