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<p>Biaxial testing is done to characterize anisotropic behavior of sheet metals under various loading conditions. These tests are limited by specimen geometry, and thus, maximum equivalent plastic strain is enough only to determine yielding behavior of sheet metals. The present work is related to a novel estimation of biaxial stress–strain curve of sheet metals to a higher strain range. This is achieved using hybrid experimental–numerical method wherein the sheet metal is first deformed biaxially to a predetermined level of strains. Later, cruciform specimens are carved out from these sheets to conduct biaxial tensile test to determine biaxial stress–strain curve up to ~ 10-12% effective plastic strain.</p>

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Estimation of Biaxial Stress–Strain Curve of Sheet Metal to a Higher Strain Range Using Hybrid Experimental–Numerical Approach

  • 期刊论文

  • 发表日期：

    2026年4月2日

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  • Abhishek Raj,
  • Pundan K. Singh,
  • Shaik Shamshoddin,
  • Ankit Kumar,
  • Rahul Kumar Verma

摘要

Biaxial testing is done to characterize anisotropic behavior of sheet metals under various loading conditions. These tests are limited by specimen geometry, and thus, maximum equivalent plastic strain is enough only to determine yielding behavior of sheet metals. The present work is related to a novel estimation of biaxial stress–strain curve of sheet metals to a higher strain range. This is achieved using hybrid experimental–numerical method wherein the sheet metal is first deformed biaxially to a predetermined level of strains. Later, cruciform specimens are carved out from these sheets to conduct biaxial tensile test to determine biaxial stress–strain curve up to ~ 10-12% effective plastic strain.