| 以J积分为参量评价CVDA设计曲线在高应变区的安全裕度 |
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| 引用本文： | 胡宏玖,全其兴.以J积分为参量评价CVDA设计曲线在高应变区的安全裕度[J].化工机械,1996,23(5):20-25. |
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| 作者姓名： | 胡宏玖 全其兴 |
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| 作者单位： | [1]华东理工大学 [2]湘潭大学 |
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| 摘 要： | 以含中心圆孔边穿透裂纹的有限宽板试样模拟压力容器接管部位的应变场分布，采用弹塑性有限元方法计算回路Ｊ积分，根据裂纹尖端张开位移δｔ与Ｊ的转换关系，评价了ＣＶＤＡ设计曲线用于高应变区内小裂纹缺陷评定时的安全裕度。
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| 关 键 词： | J积分 高应变区 CVAD设计曲线 安全裕度 |
Assessment of safety coefficient of CVDA design curve within high strain zones by J integral. |
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| Hu Hongjiu,Li Peining,Wang Zhiwen.Assessment of safety coefficient of CVDA design curve within high strain zones by J integral.[J].Chemical Engineering & Machinery,1996,23(5):20-25. |
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| Authors: | Hu Hongjiu Li Peining Wang Zhiwen |
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| Abstract: | The safety coefficient of the CVDA design curve for examining small fractures in high strain zones was assessed by using a finite wide board containing a central hole with penetrated fractures to simulate the strain field distribution at the nozzle junction of pressure vessels,using elastic plastic finite element method to calculate the circuit J integral based on the transformation relation between δ t and J . |
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| Keywords: | J Integral High Strain Zone CVDA Design Curve Safety Coefficient |
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