应力率对海冰单轴抗压强度的影响

摘要: 应力率是影响海冰单轴抗压强度的重要因素。本文介绍了渤海海冰现场抗压强度试验的部分结果;柱状晶体和颗粒状晶体海冰的单轴抗压强度都受应力率和应变率的明显影响。按应力率大小,可划分三个区段,在应力率较慢的延性区,强度与应力率之间呈现幂函数关系,强度随应力率增加而增高,在应力率较快的脆性区,强度变低,在这两者之间的过渡区,强度呈现最大值,应变率对强度具有类似影响。

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