| 平板双侧刚性压头对压的开裂分析 |
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| 引用本文： | 蔡永梅,谢禹钧.平板双侧刚性压头对压的开裂分析[J].工程力学,2012,29(2):235-238,250. |
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| 作者姓名： | 蔡永梅 谢禹钧 |
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| 作者单位： | 中国石油大学(华东)储运与建筑工程学院, 山东, 青岛 266555;2. 辽宁石油化工大学机械工程学院, 辽宁, 抚顺 113001 |
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| 基金项目： | 国家自然科学基金项目(50771052,50971068);辽宁省自然基金项目(20082188);辽宁省教育厅重点实验室项目(LS2010100) |
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| 摘 要： | 当弹性平板受双侧刚性压头对压时,在压头与平面接触角点附近会产生奇异应力场和K-控制区。与I 型裂纹类似,应力强度因子可作为断裂参量描述应力场的应力集中程度。该文利用经典守恒积分方法研究平板双侧刚性压头对压情况下应力强度因子和触压边界开裂的临界载荷问题,给出边界开裂临界开裂条件,并采用有限元法给出数值算例。
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| 关 键 词： | 断裂 触压 应力强度因子 临界载荷 开裂 |
| 收稿时间： | 2010-05-17 |
CRACKED ANALYSIS FOR PANEL UNDER DOUBLE-SIDE INDENTATIONS |
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| CAI Yong-mei,XIE Yu-jun.CRACKED ANALYSIS FOR PANEL UNDER DOUBLE-SIDE INDENTATIONS[J].Engineering Mechanics,2012,29(2):235-238,250. |
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| Authors: | CAI Yong-mei XIE Yu-jun |
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| Affiliation: | College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China;2. Department of Mechanical Engineering, Liaoning Shihua University, Fushun, Liaoning 113001, China |
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| Abstract: | When an elastic panel is subjected to double-side indentations by two relatively rigid,square-ended uniform punches,a singular stress field and K-dominant region would be arisen adjacent to the punch edges.The stress intensity factor for such stress fields is also a fracture parameter similar to the Mode I crack,which represents the intensification of the stress fields.In this paper,a method to formulize the SIF and critical load induced by double-side indentations is proposed based on the conservation integral.The critical condition of the boundary cracking is found.Numerical investigations had been carried out by using the proposed method and the finite element method. |
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| Keywords: | fracture indentation stress intensity factors critical load cracking |
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