| 陶瓷三点弯曲切口梁断裂实验与承载力分析 |
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| 引用本文： | 戈晓霞,王利民,张东焕,华珍.陶瓷三点弯曲切口梁断裂实验与承载力分析[J].山东理工大学学报,2008,22(5):1-5,10. |
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| 作者姓名： | 戈晓霞 王利民 张东焕 华珍 |
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| 作者单位： | 山东理工大学交通与车辆工程学院,山东淄博255049 |
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| 基金项目： | 国家自然科学基金，山东省自然科学基金 |
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| 摘 要： | 为探讨带切口陶瓷试件的最大承载力计算方法，采用实验机对7种不同切口尺寸的粗瓷矩形截面梁试件和4种切口尺寸的细瓷试件进行了三点弯曲加载实验，得到了各个试件的载荷一加载点位移关系曲线，并由实验最大载荷值和预制裂纹尺寸计算了其应力强度因子。通过黏聚裂纹模型和双K断裂准则计算弯曲切口梁的承载力，再由恒定应力强度因子计算该结构的承载力，并分别与实验载荷作比较。结果表明，由黏聚裂纹理论和双K断裂准则得到的计算值与实验结果符合较好。
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| 关 键 词： | 陶瓷断裂实验 三点弯曲梁 应力强度因子 双K断裂参数 承载力 |
Fracture experiment and load-bearing capacity analysis for notched ceramics three-point bending beam |
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| GE Xiao-xia,WANG Li-min,ZHANG Dong-huan,HUA Zhen.Fracture experiment and load-bearing capacity analysis for notched ceramics three-point bending beam[J].Journal of Shandong University of Technology:Science and Technology,2008,22(5):1-5,10. |
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| Authors: | GE Xiao-xia WANG Li-min ZHANG Dong-huan HUA Zhen |
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| Institution: | GE Xiao-xia,WANG Li-min,ZHANG Dong-huan,HUA Zhen(School of Traffic , Vehicle Engineering,Sh,ong University of Technology,Zibo 255049,China) |
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| Abstract: | In order to investigate the calculation method of maximum load bearing capacity of ceramics with notch,coarse porcelain beam specimens and fine porcelain specimens with different notch were tested under three-point bending load.A series of curves of load-displacement were obtained for each specimen;the stress intensity factors were calculated through the maximum tested load value and the initial crack length.Two kinds of method were applied to calculate the load bearing capacity,one of which was about the l... |
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| Keywords: | ceramics fracture experiment three-point bending beam stress intensity factor double-K fracture parameters load bearing capacity |
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