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<p>In the present study, the effect of changing the specimen size and its geometry on the J-integral value under mode-I loading is investigated through experimental, numerical, and statistical analyses. Two new geometries, namely curved single-edge crack (CSEC) and double curved single-edge crack (DCSEC) specimens, are developed and fabricated. It is shown that varying the size and geometry of the rubbery specimens significantly affects the J-integral value, leading to changes of up to 34% and 42%. Notably, by employing a statistical approach, the critical displacement of the fourth specimen is predicted according to the experimental data obtained from three other similar specimens of different sizes. Moreover, the critical displacement of the DCSEC geometry is estimated using the data derived from the CSEC geometry.</p>

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Size and geometry effects on fracture of elastomers: Experimental, statistical, and numerical investigations

  • 期刊论文

  • 发表日期：

    2026年4月18日

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  • Mahdi Rezanejad,
  • Mahdi Heydari-Meybodi,
  • Majid R. Ayatollahi

摘要

In the present study, the effect of changing the specimen size and its geometry on the J-integral value under mode-I loading is investigated through experimental, numerical, and statistical analyses. Two new geometries, namely curved single-edge crack (CSEC) and double curved single-edge crack (DCSEC) specimens, are developed and fabricated. It is shown that varying the size and geometry of the rubbery specimens significantly affects the J-integral value, leading to changes of up to 34% and 42%. Notably, by employing a statistical approach, the critical displacement of the fourth specimen is predicted according to the experimental data obtained from three other similar specimens of different sizes. Moreover, the critical displacement of the DCSEC geometry is estimated using the data derived from the CSEC geometry.