Wrinkling Behavior Of Laminated Steel Sheets

It has been observed that the laminated sheets are prone to wrinkling during stamping processes.

Wrinkling behavior of laminated steel sheets.

A steel polymer steel three layer laminate is a new composite sheet which recently starts to be used in automobile parts and panels for the purpose of vibration damping and weight reduction. These sheets are prone to wrinkling during forming which is a major defect. It has been observed that the laminated sheets are prone to wrinkling during stamping processes. Its initiation may be due to material properties geometric constraints and stress applied.

Wrinkles are formed due to non uniform compressive stresses resulting from multi axial stretching of materials. Thin metal sheets are increasingly used for different purposes in automotive and aerospace industry. Studied the wrinkling behavior of laminated steel sheets sandwiched with a polymer core and verified their fem results using experimental data provided by youshida and a wedge strip testing. Due to the significant difference in material properties between the polymer core and the skin steel fem prediction of the occurrence the location and the shapes of wrinkles in the forming of laminated sheets is still a great challenge.

Due to the significant difference in material properties between the polymer core and the skin steel fem. Laminated steel sheets sandwiched with a polymer core are increasingly used for automotive applications to improve vehicle u27s vibration damping performance without adding additional weight. The wrinkling behavior of laminated steel sheet was investigated 11. For example the clad sheet such as damping steel sheet in which plastics are sandwiched with steels is now in practical use.