Essay About Beam Model And Fem Projectcrank Shaft Analysisproblem

Modal Analysis of Crank Shaft Using Beam Equivalent Model
Essay Preview: Modal Analysis of Crank Shaft Using Beam Equivalent Model
Report this essay
FEM PROJECTCRANK SHAFT ANALYSISProblem: Modal analysis and harmonic loading analysis of crankshaft using beam model In this problem, we converted a 3D element to a beam model element as  it is easy to compute and gives pretty much accurate results.The following 3 D model was used as a reference and we equated moment of inertia of the 3 d model elements and beam elements to get the reff for the beam model.[pic 1]The following pictures depict the formulae used for getting the reff.The FEM analysis is explained via the following pictures: Part : Make a line of 320 mm in partProperties:  We used grey cast Iron as the component .Insert the properties  Density = 7200 kg/m3Young’s modulus = 6.62e10Poisson’s ratio = .27Create section:Select a section and select it as beam Assigned section to it Similarly do for the other parts created by edge partition of initial length Assign beam orientation:Click assign beam orientation and select the whole line Assembly: Go to assembly and click to create instance and select bar then okSTEP :FOR FIRST 20 NATURAL FREQUENCY        BOUNDARY CONDITIONS:FIXING THE BOTH ENDS OF THE CRANK SHAFT                                                                   MESHING :                               VISULIZATION:FIRST MODE (280.17)       SECOND MODE ():                                                                                                                                                                                                 THIRD MODE(2358.1):FOURTH MODE(2620.3):IFTH MODE(5042.6):SIXTH MODE(6356.7):SEVENTH MODE(8530.1):