Incremental profile ring rolling with axial and circumferential constraints
نویسندگان
چکیده
منابع مشابه
Research on Filling Limit of Profile Ring Rolling on Circumferential Surface
In the present study, we designed a ring rolling preform for producing a ringed product with a grooved outer circumferential surface. One of the most common defects in the profile of a ring rolling process is unfilling, which occurs when the deformation amount of product is small or the depth of the groove in the outer surface is large. To prevent unfilling, the deformation amount should be inc...
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Ring rolling is a complicated process, in which rolling parameters influence directly the quality of ring. It is a process method with high productivity and few waste of material, widely used in transportation industry including automotive, shipbuilding, aerospace etc. During the rolling process of large-sized parts, crinkle and hollows often appear on surface, due to inconsistence of rolling m...
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This paper uses an orthotropic shell model to investigate in detail the long axial wavelength circumferential vibration of microtubules (MTs). The deformation patterns in the vibrations were explored and their phonon dispersion relations were presented for MTs with increasing radius. It was shown that with the growth of the axial wavelength, the associated frequency of MTs would finally approac...
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Pelvic ring disruptions in the polytraumatized patient are associated with a mortality rate of up to 25%.1 Acute uncontrolled hemorrhage and its complications are the leading causes of death in these patients.2 Treatment algorithms for resuscitation and control of hemorrhage are aimed at reducing morbidity and mortality. Although variations exist among these algorithms, essentially all include ...
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Elastic arteries are significantly prestretched in an axial direction. This property minimises axial deformations during pressure cycle. Ageing-induced changes in arterial biomechanics, among others, are manifested via a marked decrease in the prestretch. Although this fact is well known, little attention has been paid to the effect of decreased prestretch on mechanical response. Our study pres...
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ژورنال
عنوان ژورنال: CIRP Annals
سال: 2017
ISSN: 0007-8506
DOI: 10.1016/j.cirp.2017.04.114