In this paper, the nonlinear vibration behavior of a rotor with asymmetric shaft considering misalignment is studied. The system consists of a rectangular shaft and a disk which is connected to a motor through a flexible coupling. In order to consider higher order deformations, nonlinear Bernoulli beam is used for modeling the shaft. Gibbons’ equations are utilized to apply misaligned coupling ...

BACKGROUND Flexible intramedullary nailing has emerged as an accepted procedure for paediatric femoral fractures. Present indications include all patients with femoral shaft fractures and open physis. Despite its excellent reported results, orthopaedic surgeons remain divided in opinion regarding its usefulness and the best material used for nails. We thus undertook a retrospective study of pae...

Guaranteeing transaction semantics in a highly available and fault tolerant manner is desirable to application developers. Besides, it is a very valuable feature for database-backed applications. SHAFT is a pessimistic concurrency control protocol for partitioned and replicated data, which can be distributed across multiple datacenters. Laying its basis on the Paxos algorithm, the SHAFT protoco...

Soil-structure frictional resistance is an important parameter in the design of many foundation systems. The soil-structure interface area responsible for load transferring from structure to surrounding soil. mobilized shaft axially loaded, long slender pile embedded dense, dry sand experimentally and numerically analyzed when subjected pullout force. Experimental setup including instrumented m...

We report a flexible shaft-based mechanical scanning photoacoustic endoscopy (PAE) system that can be potentially used for imaging the human gastrointestinal tract via the instrument channel of a clinical video endoscope. The development of such a catheter endoscope has been an important challenge to realize the technique's benefits in clinical settings. We successfully implemented a prototype ...

Considering backlash, time-varying mesh stiffness and radial clearance of bearing, nonlinear dynamic model of gear bearing flexible shaft system is established taking into account breathing crack in shaft and tooth wear. Nonlinear dynamic equations are solved by Runge-Kutta method. Effect of backlash, crack in shaft and tooth wear faults on the nonlinear dynamic behavior of gear-shaft-bearing s...