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| A practical interpolation method for determining cohesion toughness KcIc of double-K fracture model |
| Received:April 27, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20101008 |
| KeyWord:concrete fracture test norm double-K fracture model cohesion toughness KcIc interpolation |
| Author | Institution |
| 高洪波 |
海南大学 土木建筑工程学院, 海口 ;大连理工大学 海岸和近海工程国家重点实验室 结构工程研究所, 大连 |
| 徐世烺 |
大连理工大学 海岸和近海工程国家重点实验室 结构工程研究所, 大连 |
| 吴智敏 |
大连理工大学 海岸和近海工程国家重点实验室 结构工程研究所, 大连 |
| 卜丹 |
大连理工大学 海岸和近海工程国家重点实验室 结构工程研究所, 大连 |
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| Abstract: |
| To extend the application of concrete fracture test norm in engineering, a bivariate Lagrangian interpolation function method for determining double-K fracture model cohesion toughness KcIc, of which caused by the cohesive force σ(x) along the fictitious crack zone in the critical state, is proposed. Then the initiation toughness KiniIc can be easily evaluated using the three-parameter law of toughness in quasi-brittle materials. Compared with the values of cohesion toughness KcIc calculated by the numerical integration, this interpolation method is of high accuracy. Further, the calculation of KcIc is simplified much more, all calculations can be performed with a pocket calculator and it is very convenient for practical engineers. |
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