On the macroscopic scale, the elastic modulus and the plastic parameters for both pore collapse and plastic shearing processes are expressed as functions of water saturation degree.
在宏观尺度上，弹性模量和塑性参数，包括对塑性孔隙塌陷机理和塑性剪切机理，被表达成水饱和度的函数。
This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method.
建立了射孔段套管弹性抗挤性能分析控制一般方程，并采用摄动理论给出了的孔段套管弹性抗挤能力降低系数一般计算公式。
The strength of the junction may be limited by plastic collapse of the junction or by elastic or plastic buckling of the ring.
转折连接的主要破坏模式包括塑性破坏及环梁的弹性或塑性屈曲。
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