| 摘要 |
PURPOSE:To obtain values having high accuracy with not only displacement but stress as well by preparing such generalized coordinates where there are no missing parts for the external force terms and making calculation. CONSTITUTION:A mode expressing the deformation of the entire structure and a mode expressing the deformation of respective partial structures are used. The mode taking the influence of external force into consideration is added in addition to the mode of normal vibration as the mode expressing the deformation of the partial structures. Processings 1-7 are executed with, for example, respective elements and the hyper-element matrix is made and is outputted to a file A. The result is read as the element data by element matrix formation (coordinate transformation) 9, by which the calculation over the entire part is made. The parts of reference mode calculation 5 and eigenvalue calculation 12 are rewritten to the calculation of the generalized coordinates taking the external force terms into consideration. The construction of the program is not disturbed even if such generalized coordinates are incorporated into the conventional program. The values having high accuracy are thus obtd. |
