客观描述高应变率作用下的约束混凝土的力学行为需要考虑加载历史。
To objectively describe the behavior of confined concrete under high strain rates the loading history has to be taken into account.
在SHPB实验中，通过采用整形器技术，实现实验过程中的应力平衡和常应变率加载。
A pulse shaping technique has been used in split Hopkinson bar (SHPB) experiment, for ensuring the specimen in dynamic stress equilibrium and loaded under constant strain rate during the test.
本文重点针对传统的SHPB实验技术试样中早期应力不平衡和实验中难以达到常应变率加载这两大问题，建立了入射波整形技术。
Because it is hard to obtain dynamic stress equilibrium and constant strain rate in soft materials specimen during the conventional SHPB experiments, a pulse shaping technique is developed.
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