تحليل تنش در تنشن ريل نورد ورق هاي فلزي

چكيده انگليسي :

Investigation into ManufacturingStress analysis of an Expanding Coiling Formatted Font Default Times New Roman 14 pt Complex Script Font Times New Mandrel as a Tension Reel Roman 14 pt Formatted Line spacing single Majid Zaghian Formatted Font Not Bold Complex Script Font Not Bold majidzaghian@me iut ac ir Formatted Font 10 pt Complex Script Font 10 pt 18 08 1388 Mechanical engineering Isfahan University of Technology Isfahan 84156 83111 Iran Formatted Font 12 pt Complex Script Font 12 ptDegree M Sc Language Farsi Formatted Line spacing single Formatted Font 10 pt Bold Complex ScriptSupervisors Font 10 pt BoldMahmud Salami salami@cc iut ac ir Formatted Left Line spacing singleMahmud Kadkhodaei kadkhodaei@cc iut ac ir Formatted Font Default Times New Roman 12 pt Complex Script Font Times New Roman 12 ptABSTRACTbstract Formatted Line spacing singleTension reels are widely used as an exit side winding system for continuous rolling mill lines to make coils by Formatted Font Default Times Newwinding the strip onto a mandrel A hydraulic cylinder expands a segmented mandrel and a clamping mechanism Roman 12 pt Complex Script Font Times Newcauses the strip to be gripped over the mandrel at the same time The whole components are mounted on the exit Roman 12 ptshaft of a gearbox whose power is provided by an electric motor Formatted Font Default Times New Roman 10 pt Complex Script Font Times NewIn this paper stress analysis for the mechanical components of gear box and expanding mandrel of a tension reel Roman 10 ptoperating in the pickling line of Mobarakeh Steel Complex MSCo is done to find the critical parts where some Formatted Font Default Times Newoptimization on geometry or material seem to be proper for higher efficiency of the whole equipment Roman 10 pt Complex Script Font Times New Roman 10 ptAt critical instances considered to analyze the equipment applied tension to the outer layer of the coil as well as the Formatted Font Default Times Newtorque transmitted to the mandrel is evaluated by using the linear velocity of the strip at exit section and electrical Roman 10 pt Complex Script Font Times Newdata obtained from the motor which causes the rotation of the mandrel Working pressure of the hydraulic cylinder Roman 10 ptwhose rod extraction causes the mandrel expansion is used to obtain axial force generated in the expandingsegments Parts of the driving gearbox of the mandrel are considered by exerting the torque which is provided by an electricmotor Bending and Contact stresses in Gears were derived and the safety factor of each gear was computed Alsofatigue failure of shafts of the gearbox was considered and the safety factors were considered Finally The Bearingslife was computed Finite element analysis for all the mechanical components of the mandrel is done by using ABAQUS As there are Formatted Font Default Times Newseveral statically indeterminate mechanisms within the mandrel usual solution methods are not capable of Roman 10 pt Complex Script Font Times New Roman 10 ptpredicting stress and strain fields for all parts The idea of substituting the two force members with elastic linearsprings is proposed in the present work To estimate the longitudinal stiffness of each two force member themember is subjected to a longitudinal force to measure the corresponding displacement while the rest of themechanism is assumed to be in stress free conditions Then the total nodal forces and displacements due to thepresence of all members are obtained by dynamic simulation of the whole mechanism containing some linearsprings instead of the actual two force members in Autodesk Inventor and the nodal forces are applied on thecorresponding nodes in the primary ABAQUS model Comparison of the results obtained using this method forselected mechanisms with known solutions shows good accuracy of the method

زاغيان، مجيد

تحليل تنش در تنشن ريل نورد ورق هاي فلزي

آناليز تنش , بهينه سازي , مندرل قابل انقباض