The stability and smoothness of rolling stock running could be defined accurately by universal Sperling's comfort index. divergences variation index a passenger car under specific operating conditions gear are examining in this paper. Numerical simulations with independently rotating wheels various have been performing. Gained results showed that the particularly significant due to component os...

To meet the requirement of lightweight, an increasing number solid shafts are designed to be hollow in transportation industry. In this study, a novel method flat-knifing cross-wedge rolling (FCWR) with single guide is proposed including modified roller, horizontal mill, and single-guide structure, its key problems studied by numerical simulations experimental tests. A mathematical model FCWR r...

Twin-roll casting AZ31 Mg alloy sheets have been fabricated by normal unidirectional-rolling, head-to-tail rolling, and clock-rolling, respectively. It has been demonstrated that head-to-tail rolling is the most effective to refine the microstructure and weaken the basal texture among the three rolling routes. Excellent integrated tensile properties can be obtained by the head-to-tail rolling. ...

Abstract In this paper, a numerical analysis of the cold thread-rolling process using flat dies is presented as function die geometry design. Five geometries with different threading and finishing ratios were modelled to induce screw deformation rates. An analytical method was proposed by authors design roll rotation. Screw accuracy, induced stress, wear selected compare tested geometries. The ...

In order to develop the technique predict surface characteristics of fatigue specimens austenitic stainless steels by controlling finishing processing lathe turning and shot peening, applicability response models formerly created present authors using experimental design experiments approaches with different types and/or rolling conditions have been investigated. The conclusive remarks could be...

Leukocyte capture and rolling are mediated by selectins expressed on leukocytes (L-selectin) and the vascular endothelium (P- and E-selectin). To investigate the role of core 2 beta1-6-N-glucosaminyltransferase (C2GlcNAcT-I) for synthesis of functional selectin ligands in vivo, leukocyte rolling flux and velocity were studied in venules of untreated and tumor necrosis factor-alpha (TNFalpha)-pr...

In this paper‎, ‎we study the class of rings in which every $P$-flat‎ ‎ideal is flat and which will be called $PFF$-rings‎. ‎In particular‎, ‎Von Neumann regular rings‎, ‎hereditary rings‎, ‎semi-hereditary ring‎, ‎PID and arithmetical rings are examples of $PFF$-rings‎. ‎In the context domain‎, ‎this notion coincide with‎ ‎Pr"{u}fer domain‎. ‎We provide necessary and sufficient conditions for‎...