夹心杆系统中一维弹塑性波演化精细分析(Ⅱ):弹塑性交界面与平台段反射衰减OA北大核心CSTPCD
Meticulous analysis of one-dimensional elasto-plastic wave evolution in sandwich rod systems(part Ⅱ):reflection attenuation at the elasto-plastic interface and platform section
相对于入射波加载阶段透反射分析过程,入射波平台段持续时间长且弹塑性传播与演化行为复杂得多,此阶段试件内弹塑性波相互作用的影响非常明显.开展了矩形入射波作用下试件内弹塑性波的相互作用及其在两个界面上的弹塑性透反射行为计算,定量研究了夹心杆系统中反射波的衰减特征.结果表明:强入射波作用下,由于弹塑性波相互作用,试件内形成了曲线型弹塑性交界面,使透射端达到屈服状态的时间明显提前,该弹塑性交界面以大于弹性声速的速度向反射端变速传播;在塑性阶段,反射波的衰…查看全部>>
Compared to the reflection and transmission analysis process during the incident wave loading phase,the incident wave plateau phase lasts longer,and the elastic-plastic propagation and evolution behavior are much more complex.The effects of elastic-plastic wave interactions within the specimen during this phase are very pronounced.Using the elastic-plastic incremental wave theory,combined with numerical simulation,the calculations of elastic-plastic wave's i…查看全部>>
高光发
南京理工大学机械工程学院,江苏 南京 210094
力学
分离式Hopkinson压杆弹塑性交界面应力衰减反射波透射波广义波阻抗
split Hopkinson pressure barelastic-plastic interfacestress attenuationreflected wavetransmitted wavegeneralized wave impedance
《爆炸与冲击》 2024 (8)
120-130,11
国家自然科学基金(12172179,U2341244,11772160)
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