| 聚碳酸酯板裂纹顶端的弹塑性研究 |
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| 引用本文： | 冯英先 沈家瑶. 聚碳酸酯板裂纹顶端的弹塑性研究[J]. 实验力学, 1990, 5(3): 302-309 |
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| 作者姓名： | 冯英先 沈家瑶 |
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| 作者单位： | 南京华东工学院，南京华东工学院，南京华东工学院 |
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| 摘 要： | 本文研究了聚碳酸酯板的延性断裂特征;提出了修正的强化Dugdale条带屈服模型,并用实验-数值计算混合法确定了强化弹塑性材料裂纹顶端附近的应力场参数.实验测定结果与理论等色线,计算的裂纹前沿塑性区长度相符合.由此,验证了所提出的修正强化Dugdale条带屈服模型的合理性.
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| 关 键 词： | 聚碳酸酯 裂纹 弹塑性 板 |
Elastoplastic Field Around Crack Tip of Polycarbonate Plate |
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| Feng Yingxian Shen Jiayao Liu Xinhua. Elastoplastic Field Around Crack Tip of Polycarbonate Plate[J]. Journal of Experimental Mechanics, 1990, 5(3): 302-309 |
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| Authors: | Feng Yingxian Shen Jiayao Liu Xinhua |
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| Affiliation: | East China Institute of Technology |
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| Abstract: | In this paper, the ductile fracture characters of polycarbonate plate are studied. A modified hardening Dugdale strip yield model is proposed. The stress filed around ductile crack tip is determined by hybrid experimental-numerical analysis method. Experimcntal results show good agreements with theoretical isochromatics and lengths of strip yield zones. So that the developed modified hardening Dugdale strip yield model is reasonable. |
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| Keywords: | Dugdale model polycarbonate fracture |
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