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预应力钢管混凝土组合构件的稳定性研究
预应力 钢管混凝土
2013/10/28
给出了预应力筋初始张拉力和有效张拉力的计算方法. 根据弹性力学理论和能量法原理,建立了组合构件挠曲微分方程,推导了各种边界条件的预应力钢管混凝土组合构件的压屈载荷计算公式,并由强度条件确定了界限长细比. 算例分析表明,对超过界限长细比的钢管混凝土组合构件,施加预应力可以有效地提高其稳定承载力.
Polymorphism, superheating, and amorphization of silica upon shock wave loading and release
Polymorphism superheating silica
2014/4/8
We present a detailed and quantitative examination of the thermodynamics and phase
change mechanisms (including amorphization) that occur upon shock wave loading and
unloading of silica. We apply De...