Intelligentized Data Input Research On Ship Vibration Prediction

The traditional ship design method could not meet the demand of the modern ship design and the ship market competition is more and more intensified. In these years, the design and calculation work are simplified as the computer technology has applied to the ship design. Many kinds of foreign software have been applied to the sea boat design, but the AutoCAD is still largely used by the warship and keel ship design. The foreign design software can be connected with the AutoCAD by the DXF document. To analyze the geometrical and physical parameter of the ship structure is apparently important to the ship dynamics and static's calculation by dealing with the ship structure data under the AutoCAD IDE.This paper is based on it to realize the intelligentized data input of the ship vibration prediction by studying the digital of the ship drawing. VBA is selected as tool to develop AutoCAD. And this method is applied to the AutoCAD drawing research of ship structure.This paper introduces the most key knowledge, namely the program principle of the B- spline curve first in order to use it to characterize the ship shape. Then parameterized recognizes the components and planes of the ship structure. The data gained will be put into the module database built beforehand which prepared for the ship vibration prediction. The intelligentized program of the ship vibration prediction data input is completed at last. This program substitutes the manpower data input based on AutoCAD. And the vibration prediction is entirely completed up to now. On the other hand, the program is verified in the process of the application.The program can be commonly used to the AutoCAD drawing of any type of ship.