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首页> 外文期刊>Journal of Materials Engineering and Performance >Failure of Cross-Rolled Beryllium Plates due to a Point Load
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Failure of Cross-Rolled Beryllium Plates due to a Point Load

机译：点载荷引起的横轧铍板失效

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摘要

Failure prediction of cross-rolled beryllium SR-200 sheets loaded in a complex state of stress was demonstrated by means of the Tsai-Wu failure theory. A total of sixteen beryllium plates, 2.54 mm thick with various length-to-width ratios and support conditions, were tested in the laboratory with a central trans-verse point load. Finite-element analyses of the plates were coupled with the failure prediction theory. Prediction of failure from numerical simulation was compared with strain gage and displacement transducer measurements. Analysis of the load history of the specimens revealed a primary and an ultimate failure load. Ultimate failure of a fully clamped plate caused an unusual delamination phenomenon, whereby a circular region displaced in the direction of the load, but did not separate from the plate.
机译：通过蔡-吴破坏理论，证明了在复杂应力状态下交叉轧制铍SR-200薄板的失效预测。在实验室中以中心横向点载荷测试了总共16个2.54 mm厚，具有各种长宽比和支撑条件的铍板。板的有限元分析与故障预测理论相结合。将通过数值模拟进行的故障预测与应变计和位移传感器的测量结果进行了比较。对样品的载荷历史的分析显示出主要和最终的失效载荷。完全夹紧的板的最终故障会导致异常的分层现象，从而使圆形区域在载荷方向上发生位移，但并未与板分离。

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