Abstract: Based on Visual Basic programming language, using the second developing language APDL of ANSYS software, the command stream file was created and used in secondary development of ANSYS, and a universal definite element calculating and analyzing program was developed. The parameters can be input in the interface, and the modeling and solving can be accomplished automatically by the program. The result can be seen directly in the program. The function of calling ANSYS to carry out the modal analysis for the constrained layer damping short cylindrical shell under VB interface was realized. After parametric modeling, to modify the parameters is needed only for the modification of the whole model, so the efficiency was improved greatly.

Key words: constrained layer damping cylindrical shell, definite element analysis, programming language, parametric, Visual Basic (VB)