Itzhak Green

TL;DR: In this paper, a semi-analytical formulation for the linearized dynamic analysis of spiral-grooved mechanical gas face seals is presented, and closed-form solutions are presented for the transient natural response to initial velocity conditions, the steady-state response to rotor runout and initial stator misalignment, the transmissibility ratios, and the stability threshold.

TL;DR: In this paper, the results of a finite element analysis (FEA) used to simulate two-dimensional sliding between two interfering elasto-plastic cylinders are presented for both frictionless and frictional sliding and comparisons are drawn The effects of plasticity and friction on energy loss during sliding are isolated.

TL;DR: In this paper, the gas film stiffness and damping properties for a spiral grooved mechanical face seal in a flexibly mounted stator configuration are computed using the step jump method and a novel direct numerical frequency response method.

TL;DR: In this paper, the dominant friction and wear mechanisms in case of dry sliding of carbon nanoparticle reinforced nickel matrix composites under elastic and elasto-plastic contact conditions were investigated.

TL;DR: In this article, the stiffness characteristics of elastomeric O-ring seals with complex geometry have been investigated using a commercially available finite element code and axial and radial compression of O-rings, as well as the influence of restraining grooves and friction, are investigated.