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This article describes strain analysis techniques for troubleshooting formability and process discrepancies throughout a tooling development and production stamping cycle. The techniques include strain calculations of a flat blank, forming limit curve, and forming limit diagram. The article describes the types of strain analysis, namely, thinning strain analysis and circle grid strain analysis. It also provides information on the applications of the thinning strain analysis.

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Daniel J. Schaeffler, Evan J. Vineberg, Troubleshooting Formability Problems Using Strain Analysis, Metalworking: Sheet Forming, Vol 14B, ASM Handbook, Edited By S.L. Semiatin, ASM International, 2006, p 697–706,

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