本文利用缺陷规范场理论给出有效临界扩展力,并且从理论上分析了有效临界扩展力的对数值是断口分形维数的线性函数的合理性,澄清了分形用于断裂韧性研究中存在的不定性问题。
Using gauge field theory of defects, the effective critical extensionforce in elastic-plastic fracture mechanics was given. The rationality of logarithmof effective critical extension force as a linear function of the fractal dimensionali-ty of the fracture was analyzed in theory. The explanation in approach to studyingmaterial toughness using the fractal has been clarified.
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