Surface evaluation in a stamping manufacturing process utilizing true reflection line methodology and computer graphics technology

A method for simulating a stamping and evaluating a surface quality of a simulated part formed using the simulated stamping, said method comprising the steps of:

• A. providing a computer model of a desired part;
• B. calculate and display at least one image of true reflect line on said computer model;
• C. obtaining a finite element analysis springback blank representative of a part before a simulated stamping;
• D. processing said finite element analysis springback blank with springback simulation software to obtain a deformed finite element analysis springback blank, said finite element analysis springback software utilizing a plurality of variables to obtain said deformed finite element analysis springback blank, wherein said plurality of variables includes material property, constitutive model, friction, draw bead forces, and binder tonnage;
• E. calculate and display true reflect lines on the deformed finite element analysis springback blank;
• and
• F. comparing said true reflect line of said deformed finite element analysis springback with said true reflect line on said computer model to determine variance of said deformed finite element analysis springback blank with said computer model.