Wrinkling Behavior Of Laminated Steel Sheets

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

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Its initiation may be due to material properties geometric constraints and stress applied.

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. In addition they conducted rectangular panel forming tests and compared the wrinkling resistance of monolithic sheets and laminated sheets as. These sheets are prone to wrinkling during forming which is a major defect. 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.

Thin metal sheets are increasingly used for different purposes in automotive and aerospace industry. It has been observed that the laminated sheets are prone to wrinkling during stamping processes. Laminated steel sheets sandwiched with a polymer core are increasingly used for automotive applications to improve vehicle s vibration damping performance without adding additional weight. Wrinkles are formed due to non uniform compressive stresses resulting from multi axial stretching of materials.

For example the clad sheet such as damping steel sheet in which plastics are sandwiched with steels is now in practical use. Due to the significant difference in material properties between the polymer core and the skin steel fem. The wrinkling behavior of laminated steel sheet was investigated 11. It has been observed that the laminated sheets are prone to wrinkling during stamping processes.

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