Abstract Analysis of dynamic characteristics the defective bearing is significant for fault diagnosis machinery. At present, there are few researches on numerical modeling with roller. To solve this problem, explicit finite element method adopted in paper to establish a nonlinear model cylindrical roller spalling defects. In proposed model, flexibility all components, internal friction, relativ...

A new germfree chicken cage for rearing chicks up to 3 or 4 weeks of age has been designed and is in use at the University of Missouri. The cage and the accessory parts, the small magnet and hinged door, the "Bactytector," the built-in air filter assembly, and the glass top with connecting air outlet filter have been described in detail. The complete operating procedure for sterilizing the cage...

cage roll forming is one of the new methods of cold roll forming process which is widely used for producing erw pipes. in addition to less production cost and time, using cage roll forming provides smooth deformation on the strip. few studies can be found about cage roll forming because of its complexity, and the available knowledge is more experience-based and not science-based. in this paper,...

INTRODUCTION Transforaminal Lumbar Interbody fusion (TLIF), using interbody cages is a popular surgical method of treating various spinal disorders. In the past few years, various types of interbody cages have been introduced to spine surgeons. These interbody device and footprint sizes [1]. The footprint size of the interbody device is an important factor that determines the biomechanical stab...

The pressure acting on the part of the Rib Cage that is apposed to the costal surface of the lung is quite different from that acting on the part apposed to the diaphragm. The non uniformity of pressure distribution led Agostoni and D’Angelo (1985) to suggest that the rib cage could be usefully regarded as consisting of two compartments mechanically coupled to each other (Agostoni & D’Angelo, 1...