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分析了SHPB试验中导致试件早期应力不均匀性的主要因素,指出试件中应力波的波速是与试件材料的应力应变曲线耦合在一起的,提出了考虑应力不均匀性的解耦方法,这种解耦方法具有普遍性,可广泛用于SHPB实验数据处理。
The main factors that lead to the early stress inhomogeneity in the SHPB test are analyzed. It is pointed out that the wave velocity of the stress wave in the specimen is coupled with the stress-strain curve of the specimen, and a decoupling method considering stress inhomogeneity is proposed This decoupling method is universal and can be widely used in SHPB experimental data processing.