抄録
Calculations based on large finite element solid models of actual crankshaft system are indispensable to vibration analysis of the crankshaft system of long-stroke marine diesel engines, but limitations to computer capacity or to computing time preclude analysis by conventional method. The present study covers an attempt at utilizing component mode synthesis and NASTRAN image superelements with application of the restart function, for analyzing the modal frequency response analysis of pilot model.
A simple model of crankshaft consisting of beam elements was used as a pilot model to verify the functional validity and practical accuracy of NASTRAN applied in this mode. This report presents an illustrative example of modal frequency response analysis applied to pilot models.
As a result, the effectiveness of component mode synthesis method and image superelements was confirmed. And also cost-effective computer use will be expected for runs of the large model using these methods.
