| 激光加热双层金属薄膜的热弹性研究 |
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| 引用本文： | 熊启林,周勇,田晓耕.激光加热双层金属薄膜的热弹性研究[J].固体力学学报,2011(Z1). |
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| 作者姓名： | 熊启林 周勇 田晓耕 |
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| 作者单位： | 西安交通大学强度与振动教育部重点实验室;河南省电力公司信阳供电公司; |
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| 基金项目： | 国家自然科学基金项目(10872158); 高等学校学科创新引智计划(B06024)资助 |
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| 摘 要： | 基于电子-声子相互作用的双曲两步热传导模型,并计及晶格的热传导效应,利用有限元方法研究了无限大双层金属薄膜在短暂激光冲击下诱导的位移、应力、应变和温度等物理量的演化特点.比较了计及电子热爆发力与不计电子热爆发力对位移、应力等物理量的影响,说明计及电子热爆发力的必要性.研究有利于对微型金属器件受到强热冲击产生破坏与失效的更深层次的理解,具有一定的学术意义和工程应用价值.
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| 关 键 词： | 双曲两步热传导模型 有限元方法 电子热爆发力 热冲击 |
STUDY OF THERMOELASTICITY OF DOUBLE-LAYER METAL FILM DURING LASER HEATING |
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| Qilin Xiong Yong Zhou Xiaogeng Tian.STUDY OF THERMOELASTICITY OF DOUBLE-LAYER METAL FILM DURING LASER HEATING[J].Acta Mechnica Solida Sinica,2011(Z1). |
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| Authors: | Qilin Xiong Yong Zhou Xiaogeng Tian |
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| Affiliation: | Qilin Xiong1 Yong Zhou2 Xiaogeng Tian1(1 The State Key Laboratory of Mechanical Structural Strength and Vibration,Xi'an Jiaotong University,Xi'an,710049)(2 Xinyang Power Supply Company of Electric Power of Henan,Xinyang,464000) |
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| Abstract: | The thermomechanical response of an infinite double-layered metal film impacted under ultral-short laser pulses is investigated by using finite element method(FEM) based on hyperbolic two-step heat conduction model with electron-phonon interaction.Finite element governing equations are established and solved in time domain directly.The results,including electron and lattice temperatures,stresses and displacements,are presented graphically and compared with literatures.The results show that FEM method can be... |
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| Keywords: | hyperbolic two-step heat conduction model finite element method hot-electron blast thermal shock |
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