In this paper, dynamic and stability analysis of a flexible cam-follower system is investigated. Equation of motion is derived considering flexibility of the follower and camshaft. Viscous and Coulomb frictions are considered in the rocker arm pivot. The normalized equation of motion of the system is a 2nd- order differential equation with periodic coefficients.&#10Floquet theory is employed to...

supernatant fluid. 2. All the tuLbes showed a rapid fall in pH during the first two hours. This was attributed to the setting up of an equilibrium between the CO2 in the air of the tube and the supernatant fluid. In comparison with the control tubes, which never fell below the initial drop to 7.3 or 7.25 during the first two hlours, all the tubes showed an inicrease in the productionl of acid d...

[This corrects the article DOI: 10.1371/journal.pone.0169151.].

Abstract A crawler system provides much larger ground contact, leading to excellent terrain adaptability. Due its structural characteristics, high‐frequency vibration proportional the vehicle speed is generated during driving process. This a result of polygon and rolling effects between track wheels. field test tracked performed monitor movement signals chassis rocker arm. Their corresponding p...

The etiology of diabetic Charcot neuroarthropathy involving the midfoot often includes an inciting traumatic event or repetitive micro-trauma from an uncompensated biomechanical imbalance that potentiates an incompletely understood pathway leading to a rocker-bottom foot deformity and ulceration. In the setting of a severe Charcot foot fracture and/or dislocation with obvious osseous instabilit...

Walker-Warburg syndrome (WWS) is a rare and lethal autosomal recessive disorder, caused by defective glycosylation of α-dystroglycan that is important for muscle integrity and neuronal migration. Mutations in six genes involved in the glycosylation of α-dystroglycan (POMT1, POMT2, POMGNT1, FCMD, FKRP and LARGE) have been identified in WWS patients, and others remain under study. Prenatal diagno...

In general, joints are assumed without clearance in the dynamic analysis of multi-body echanical systems. When joint clearance is considered, the mechanism obtains two uncontrollable degrees of freedom and hence the dynamic response considerably changes. The joints’ clearances are the main sources of vibrations and noise due to the impact of the coupling parts in the joints. Therefore, the syst...