期刊
POLYMER ENGINEERING AND SCIENCE
卷 61, 期 8, 页码 2183-2192出版社
WILEY
DOI: 10.1002/pen.25745
关键词
crack growth; crack growth angle; mixed mode; strain energy density factor; unfilled elastomers
This article investigates the prediction of crack growth angles of internal cracks in EPDM rubber under mixed mode loading. The determination of the strain energy density factor successfully predicted the crack growth angles, which showed very good accordance with the experimental measurements.
This article investigates the prediction of the crack growth angle of an existing internal crack under mixed mode loading at the crack tip for an unfilled ethylene propylene diene terpolymer rubber (EPDM). For the realization of mixed mode loading, the cracks of the uniaxial loaded specimens were oriented with different angles to the loading direction. The energy density factor was used as a potential criterion for determining the crack growth angle. The determination of the strain energy density factor was carried out simulatively in Abaqus. The second-order Ogden model was used to describe the rubber-like material behavior. The relative local minimum of the strain energy density factor provides the possible growth angle. The experimental investigations show that the initial cracks grow orthogonally to the loading direction for the different crack orientation angles. For the crack orientation angle parallel to the load direction, the crack growth was observed because the strong stretching of the specimen caused strong necking in the crack region. The crack growth for the remaining crack orientation angles were induced due to shear loading at the crack tip. The predictive angle of different crack orientation angles shows very good accordance to the measured crack growth angles.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据