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摘要: 通过自编程序调整入射波、透射波和反射波的相对位置。当移动波相对位置时,程序界面显示2 幅图:一幅显示入射波、透射波、反射波以及透射波与反射波之差;另一幅显示试样的3条应力应变。这3条 曲线分别由第1幅图中的入射波与透射波、入射波与反射波以及三波法求得。根据SHPB实验的基本假定, 这3条应力应变曲线的塑性段应该一致,同时透射波与入射波之差应等于反射波,把这2个等价的特点作为 正确处理SHPB实验数据标准的方法称为三波校核法。
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关键词:
- 固体力学 /
- 三波校核 /
- Hopkinson压杆 /
- 数据处理
Abstract: Therelativepositionsofincidentwave,transmission waveandreflection wavecanbe changedbytheself-developedprogram.Whentherelativepositionofthewavesisadjusted,theselfdevelopedprogramgivestwoimages. Oneimagedisplaysincident,transmission,reflectionwavesand thedifferencebetweentransmissionandincidentwaves.Theotherimagelaysoutthethreestrainstresscurvesofthespecimen. Thethreecurvesareplottedseparatelythroughincidentandtransmissionwaves, incidentandreflectionwaves,andthethreewavesfromthefirstimage.Accordingtothe basicassumptionsoftheSHPBexperiment,thethreecurvesshouldbeconsistentintheplasticregion, andthedifferenceoftransmissionandincidentwavesshouldbeequaltothereflectivewave. Thetwoequivalentcharacteristicscanbeusedascriteriaoftreatingtheexperimentaldatacorrectlyor not.Thisexperimentaldatatreatmentmethodiscalledthethree-wavecheckingmethod.-
Key words:
- solidmechanics /
- three-wavecoupling /
- SHPB /
- dataprocessing
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