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一种新的裂纹尖端临界张开角的计算方法 被引量:1

A New Calculating Method of Crack Tip Opening Angle (CTOA)
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摘要 介绍了一种新的裂纹尖端张开角 (CrackTipOpeningAngle ,简称CTOA)的计算方法。利用联盟管道的有关数据及有限元分析 ,拟合得出了高韧性管材 (CTOA) C 与Charpy冲击韧性CV 非线性段的经验公式 ;用管材Charpy冲击韧性CV 试验结果计算得到的 (CTOA) C 与用DWTT试验结果的经验公式计算得到的 (CTOA) C 非常吻合。这为高韧性管材 (CTOA) C 的计算提供了新的方法 ,可对天然气管道断裂控制计划的制定提供参考。 The calculating model and method of crack tip opening angle (CTOA) have been introduced.A new correlation between (CTOA) C and Charpy energy C V at non-linear stage has been established,by use of fitting the test results of Alliance Pipeline and FEA calculating.The calculated (CTOA) C by above formula from C V is coincidence well with that by the formula from DWTT.This provides a new method for (CTOA) C calculation of high toughness pipeline material.
出处 《焊管》 2004年第6期18-21,87,共4页 Welded Pipe and Tube
关键词 计算方法 输气管道 断裂控制系统 临界张开角 CTOA 天然气管道 gas pipeline fracture control crack tip opening angle (CTOA)
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参考文献11

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二级参考文献6

共引文献9

同被引文献12

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