【摘要】 应用人造多晶冰开展了正弦振动荷载和恒荷载压缩蠕变实验。振动应力的最大值为０．５０ＭＰａ，最小值为０．３４ＭＰａ，对时间的平均值为０．４２ＭＰａ，实验频率在１０￣（－２）—５Ｈｚ范围内变动。恒荷载实验的初始应力为０．４２ＭＰａ，实验温度一律为－１℃。当应变很小时（低于～０．１４％）样品在一个振动周期内发生的可恢复应变随应变的增加而增加。一个振动周期内可恢复应变的量级为１０￣（－４）。振动荷载下样品最小平均应变率为恒荷载实验结果的１．４倍。为获得最小平均应变率所需的应变与恒荷载实验所得结果相同。更多还原

【Abstract】 Uniaxial compression test on laboratory prepared polycrystalline ice was carried out un－der both sinusoidally cyclic loading and constant loading．The maximum and　minimum ofcyclic stress are 0．50 and 0． 34 MPa respectively， with a time mean stress of 0．42 MPa．Thefrequencies are ranged from 10^－2 to 5 Hz．The initial stress for test under constant loading is0．42 MPa．The unique temperature for test is－1℃．Under small strain（＜～0．14％），therecoverable strain amplitude within one loading cycle increases with increase of strain． Theorder of the recoverable strain amplitude is 10^－4The minimum mean strain rate under cyclicloading is 1．4 times of the minimum strain rate under constant loading． The strain to the min－imum mean strain rate is the same as that to the minimum strain rate under constant loading．更多还原