CAJ | 학술논문

对聚碳酸酯材料进行不同应变率下 SHPB 试验的动态力学响应的研究，同时采用脉冲整形器技术分析了其尺寸和撞击速度与脉冲波形的影响关系，再应用到 SHPB 试验中以获得聚碳酸酯试件在试验过程中满足动态应力平衡的条件，以及获得近似恒应变率加载的条件。试验结果表明，聚碳酸酯材料具有应变率敏感效应，并且强度随着应变率的增大而提高。
대취탄산지재료진행불동응변솔하 SHPB 시험적동태역학향응적연구，동시채용맥충정형기기술분석료기척촌화당격속도여맥충파형적영향관계，재응용도 SHPB 시험중이획득취탄산지시건재시험과정중만족동태응력평형적조건，이급획득근사항응변솔가재적조건。시험결과표명，취탄산지재료구유응변솔민감효응，병차강도수착응변솔적증대이제고。
The dynamic responses of polycarbonate material under different strain rates are studied using SHPB experiment.Also a pulse shaper technique is applied to analyzing the relationship among the pulse shaper's size,impact velocity and pulse wave,and then the dynamic stress equilibrium conditions of the polycarbonate specimens during the experiment are obtained through applying the relationship into SHPB experiment,as well approximate constant strain rate loading conditions are acquired.The experimental results show that the polycar-bonate material is sensitive to strain rate and its strength increases with the increasing of strain rate.