Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions: President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
Other Post: Vice President of the Chinese Society of Rock Mechanics and Engineering CSRME
Title of Paper:动力作用下硬颗粒诱发裂缝弯曲和分叉机理研究
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Date of Publication:2012-08-25
Journal:水电能源科学
Included Journals:PKU、ISTIC
Issue:08
Page Number:94-96+219
ISSN No.:1000-7709
Key Words:脆性材料;裂缝弯曲;裂缝分叉;颗粒
Abstract:脆性材料在动荷载作用下的裂缝弯曲和分叉行为,对深入了解材料的抗拉特性和破坏模式有着重要意义。基于损伤演化原理的有限元方法,针对脆性材料中颗粒物诱发裂缝分叉的机理展开研究,通过比较无颗粒与有颗粒两种裂缝扩展模式,分析了硬颗粒对裂缝扩展模式的影响。结果显示,当颗粒物刚度较大物性较好、裂缝扩展遭遇颗粒时裂隙将沿着交界面绕行,易发生弯曲分叉,两者具有迥异的扩展模式。
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