飞机撞击反应堆安全壳的有限元分析
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摘要
为提高核电厂抵抗飞机蓄意撞击的能力,应用经典显式非线性有限元动力程序LS-DYNA,并采用HAD101/04标准中提供的撞击荷载函数模拟分析飞机撞击反应堆安全壳外壳。混凝土和钢筋分别采用Johnson_Holmquist_Concrete、Plastic_Kinematic本构模型,模拟这2种材料在飞机撞击时产生的大应变、高应变率的非线性性能。计算结果表明,某反应堆安全壳完全有抵抗HAD101/04中波音707-320型飞机撞击的能力。
In order to assess and enhance the capability of nuclear power plants to stand the deliberate crash of aircraft,the classical explicit nonlinear finite element dynamic program ( LS-DYNA) was adopted,in which the impact load function in HAD101 /04 was used on the containment of a nuclear reactor. The constitutive model of Johnson_Holmquist _Concrete and Plastic_Kinematic were used respectively to simulate the nonlinear performances of concrete and steel when aircraft crashing: large strain and high strain rate. The results show that the reactor containment can resist the impact of Boeing 707-320 simulated by HAD101 /04.
In order to assess and enhance the capability of nuclear power plants to stand the deliberate crash of aircraft,the classical explicit nonlinear finite element dynamic program ( LS-DYNA) was adopted,in which the impact load function in HAD101 /04 was used on the containment of a nuclear reactor. The constitutive model of Johnson_Holmquist _Concrete and Plastic_Kinematic were used respectively to simulate the nonlinear performances of concrete and steel when aircraft crashing: large strain and high strain rate. The results show that the reactor containment can resist the impact of Boeing 707-320 simulated by HAD101 /04.
引文
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[4]左家红.秦山核电厂安全壳在飞机撞击下的非线性分析[J].核科学与工程,1992,12(1):35-42.
[5]李笑天,何树延.飞机撞击核反应堆安全壳的动力学分析[J].核动力工程,2004,11(3):426-429.
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[7]Holmquist T J,Johnson G R,Cook W H.A computational constitutive model for concrete subjected to large strains,high strain rates,and high pressures[C]//14th International Symposium on Ballistics,1995:591-600.
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[10]姜华,王君杰.弹体侵彻混凝土数值模拟失效指标研究[J].振动与冲击,2009,28(8):30-34.
[11]The Nuclear Energy Institute.Methodology for performing aircraft impact assessments for new plant designs[R].Walnut Creek,California:The Nuclear Energy Institute,2009.
[2]Livermore Software Technology Corporation.LS-DYNA keyword user's manual[M].California:Livermore Software Technology Corporation,2007:307,1394.
[3]王远功,余爱萍.飞机撞击核反应堆安全壳荷载-时间曲线的确定[J].核科学与工程,1991,11(3):208-215.
[4]左家红.秦山核电厂安全壳在飞机撞击下的非线性分析[J].核科学与工程,1992,12(1):35-42.
[5]李笑天,何树延.飞机撞击核反应堆安全壳的动力学分析[J].核动力工程,2004,11(3):426-429.
[6]Hallquist J O.LS-DYNA Theory Manual[M].California:Livermore Software Technology Corporation,2005:259.
[7]Holmquist T J,Johnson G R,Cook W H.A computational constitutive model for concrete subjected to large strains,high strain rates,and high pressures[C]//14th International Symposium on Ballistics,1995:591-600.
[8]温万治.网格线示踪点法(MOCL)及其在数值模拟中的应用[R].北京:北京理工大学机电工程学院,1998.
[9]冯国忠.基于ANSYS/LS-DYNA的混凝土靶板侵彻问题的数值模拟与分析[D].哈尔滨:中国地震局工程力学研究所,2006.
[10]姜华,王君杰.弹体侵彻混凝土数值模拟失效指标研究[J].振动与冲击,2009,28(8):30-34.
[11]The Nuclear Energy Institute.Methodology for performing aircraft impact assessments for new plant designs[R].Walnut Creek,California:The Nuclear Energy Institute,2009.
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