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<p>The Gurson–Tvergaard–Needleman (GTN) concept is used in the present&#xa0;study to numerically predict an experimentally obtained <i>J</i>-R curve. The experimental findings are strongly related to the numerically derived <i>J</i>-R curve that is used to measure initiation fracture toughness. <i>J</i>-R curves obtained experimentally and numerically, are used to predict the fracture behavior of a cracked CT specimen. The current study presented a combined phenomenological and fracture mechanics strategy for predicting future crack initiation and growth in a numerically predicted <i>J</i>-R curve derived from tensile test data for the investigated material.</p>

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The Determination of Material Parameters of a Gurson–Tvergaard–Needleman Damage Model to Predict Experimental Results

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Chitragupt Swaroop Chitransh,
  • Sanjeev Saxena

摘要

The Gurson–Tvergaard–Needleman (GTN) concept is used in the present study to numerically predict an experimentally obtained J-R curve. The experimental findings are strongly related to the numerically derived J-R curve that is used to measure initiation fracture toughness. J-R curves obtained experimentally and numerically, are used to predict the fracture behavior of a cracked CT specimen. The current study presented a combined phenomenological and fracture mechanics strategy for predicting future crack initiation and growth in a numerically predicted J-R curve derived from tensile test data for the investigated material.