The paper presents novel models of reconfigurable parallel mechanisms (RPMs) with a single active degree-of-freedom (1-DOF). contain three to six identical kinematic chains, which provide (for the tripod) zero hexapod) uncontrollable DOFs. Screw theory is applied carry out mobility analysis and proves existence controllable DOFs these mechanisms. Each chain in synthesized consists planar spatia...

We show that testing reachability in a planar DAG can be performed in parallel in 0(log n log* n) time(0(logn) time using randomization) using 0(n) processors. In general we give a paradigm for reducing a planar DAG to a constant size and then expanding it back. This paradigm is developed from a property of planar directed graphs we refer to as the Poincare index formula. Using this new paradig...

This paper presents a detailed analysis of the constant-orientation wrench-closure workspace of planar three-degree-of-freedom parallel mechanisms driven by four cables. The constantorientation wrench-closure workspace is defined as the subset of the plane wherein, for a given orientation of the moving platform, any planar wrench applied on the moving platform can be balanced by the cable-drive...

the model fluids containing hard ellipses (hes) and gay-berne (gb) particles where their center is moving in one dimension and confined between two parallel walls with different interactions are investigated using monte carlo simulation, nvt ensemble. the dependency of fluid pressure with respect to the wall distances is studied. the oscillatory behaviors are seen in this quantity against wall ...