Crack-tip shape in the crack-growth rate transition of filled elastomers

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• 作者：Yoshihiro Morishita^a ; ^b ; ^{yoshihiro.morishita@bridgestone.com} ; Katsuhiko Tsunoda^a ; Kenji Urayama^b ; ^{urayama@kit.ac.jp}
• 关键词：Crack growth ; Crack tip shape ; Nonlinear elasticity
• 刊名：Polymer
• 出版年：2017
• 出版时间：13 January 2017
• 年：2017
• 卷：108
• 期：Complete
• 页码：230-241
• 全文大小：2603 K
• 卷排序：108

文摘

Filled elastomers show a discontinuous-like transition of the crack-growth rate in a narrow range of the tearing energy. Crack-tip shapes deviate from the expectation of the linear elastic fracture mechanics in a high-rate regime. Weakly nonlinear elasticity theory, which considers the second-order elasticity, successfully explains the crack-tip shapes. Threshold tearing energy for the transition is governed by the effect of nonlinear elasticity and fracture toughness.