| 激光辐照充压柱壳温度场和应力场数值模拟 |
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| 引用本文： | 李雅娣,张钢锤,王华,南宝江.激光辐照充压柱壳温度场和应力场数值模拟[J].固体火箭技术,2006,29(1):19-21,55. |
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| 作者姓名： | 李雅娣 张钢锤 王华 南宝江 |
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| 作者单位： | 中国航天科技集团公司四院设计部,西安,710025 |
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| 摘 要： | 考虑了材料参数随温度的变化,用有限元法计算了充压柱壳在不同预应力载荷、光强分别为均匀分布和高斯分布的激光辐照下的瞬态热力学耦合过程,计算出温度场和应力场。分析了热力学耦合规律,给出了破坏的危险部位。计算得到,应力峰值出现在激光加热的高温区和常温区的交界处;对于光强高斯分布,破坏首先发生在光斑中心附近;而对光强均匀分布,破坏首先会发生在边缘处。
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| 关 键 词： | 激光 柱壳 温度场 应力场 |
| 文章编号： | 1006-2793（2006）01-0019-03 |
| 收稿时间： | 2005-04-06 |
| 修稿时间： | 2005-04-062005-04-27 |
Numerical simulation on temperature and stress fields of pressurized cylindrical shell exposed to laser irradiation |
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| LI Ya-di,ZHANG Gang-chui,WANG Hua,NAN Bao-jiang.Numerical simulation on temperature and stress fields of pressurized cylindrical shell exposed to laser irradiation[J].Journal of Solid Rocket Technology,2006,29(1):19-21,55. |
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| Authors: | LI Ya-di ZHANG Gang-chui WANG Hua NAN Bao-jiang |
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| Abstract: | The change of the material parameters with temp er ature was considered,then the transient thermodynamic coupling of the pressurize d cylindrical shell exposed to laser irradiation with uniform and Gauss light in tensity under different pre-stress loads was calculated respectively by using finite element method.The temperature and stress fields were obtained,and therm odynamic coupling law was analyzed.The dangerous locations of failure were give n.Calculation results show that stress peak value appears in the interface of h igh temperature area and normal temperature area;the failure first occurs near facular center for Gauss light intensity and in the marginal zone for uniform li ght intensity. |
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| Keywords: | laser cylindrical shell temperature field str ess field |
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