Strength Analysis On Dual-elbow-bar Mechanism Of The Full Fiber Crankshaft Of Hydraulic Press

As a key component of the internal-combustion engine, crankshaft plays a vital rolefor ship safety. Crankshaft manufacturing capacity represents the level of a country’sshipbuilding since marine crankshaft is heavy and of high precision to process anddifficult to manufacture. A new dual-elbow-bar upsetting institution was introduced basedon the analysis of various full fiber crank upsetting device in this paper. Dual-elbow-barinstitutions can dramatically improve the quality of large-scale full fiber integratedcrankshaft forgings with the method of DTR crankshaft forming. It’s good to improve ourinternational competitiveness of full fiber crankshaft manufacturing.In this paper, static and dynamic analysises of dual-elbow-bar institutions werestudied. The maximum equivalent stress variation of each component was analysed in thecase of symmetrical loading being applied to the institutions with the use ofthree-dimensional drawing software UG and finite element simulation softwareMSC.Marc. The maximum equivalent stress and axial force variation rules of eachcomponent were revealed when institutions bear the eccentric loading. The maximumoffset distance of the center of gravity of the institutional loading was determined withnumerical analysis method.In this paper, the wear condition of bearings was numerically simulated indual-elbow-bar institutions with the use of finite element simulation software MSC.Marc.The different wear conditions of bearings were studied. The allowable maximum amountof wear of bearings under different wear conditions was determined with the use ofnumerical method based on the variation curve of the maximum equivalent stress ofeasy-wear part. The relative error was analysed between numerical simulation results andtheoretical yield limit of easy-wear part in institutions when the determined criticalamount of wear was re-brought into the finite element model.In this paper, influence on the maximum equivalent stress and axial forces ofimportant components in dual-elbow-bar institutions was analysed when the toggle centerdistance was within the allowable tolerance range with the finite element analysis simulation software MSC.Marc.