The Calculation of Plastic Component of CTOD Inconsideration of Crack Extension
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摘要: 针对现行CTOD测试标准中考虑裂纹扩展时的CTOD塑性分量(δp)计算式量纲不一致的问题,基于塑性铰链模型和三角形相似原理对δp计算式进行了推导,更正了现行标准中关于裂纹扩展后CTOD塑性分量计算式的错误,并对该错误产生的测试误差进行了分析。Abstract: For the problem of dimension inconsistency in calculationof plastic component of CTOD (δp) given by the current standards, the formula of δp is deduced based on the plastic hinge model in consideration of crack extension. The correct formula is obtained and the deviation caused by the technical error is analyzed.
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Key words:
- CTOD /
- Crack extension /
- δp
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