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软煤拉伸应力-应变关系的实验研究
Authors
丁雁生
俞善炳
+3 more
孟祥跃
朱怀球
谈庆明
Publication date
1 January 1997
Publisher
Abstract
提供一种用于测量软煤或土的抗拉强度、拉伸应力-应变关系等拉伸特性的实验装置。利用模具压制出均匀的煤环试件,对煤环内壁施加均布径向水压力使其拉伸变形和破坏。根据实验结果,提出了弹脆性拉断破坏的理论模型,并据此对煤的抗拉强度、弹性常数以及等效孔隙压力系数等进行了分析和讨论。实验数据稳定可靠,散布小,重复性好,说明所提供的实验装置和实验方法简单而有效
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018