Design and Accomplish of Visual Performance Calculation System of Oil-film Bearing

During the calculating process of system design and development,a large amount of mathematical calculation is needed.The source calculation programs of oil-film bearing are developed by Fortran language due to its powerful numeric calculation and mathematical analysis capacity.However,its disadvantage lies in complicated operations and poor visual effect.Due to the above situation,dynamic link library and VB are used for mix programming.The visual calculation application interface is designed for input and output function by VB.Firstly,input and output parameters are extracted from source programs,and then they are transformed into dynamic link application program.Consequently,calculation results could be visually displayed on VB interface by calling Fortran DLL.Meanwhile,VB interface is optimized by using MDI window.Finally,the visual calculation application system could be successfully accomplished.