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高温SHPB实验温度修正的差分方法

DOI: 10.11858/gywlxb.2010.03.010, PP. 219-224

Keywords: 固体力学,分离式Hopkinson压杆,高温,差分方法,温度修正

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Abstract:

将波在具有温度梯度的波导杆中运动的控制方程离散,利用差分格式编写程序,根据杆上任意一点的应变信号,计算出当波传到杆上其它任意点处的应变信号。设计实验,验证了该方法的正确性。此方法可应用于高温Hopkinson实验中,即:在波导杆上处于室温的某处粘贴应变片,由该应变片采集的应变信号,计算出试件与波导杆接触处的高温区的应变信号,利用此应变信号即可获得高温Hopkinson实验中试件的应力-应变关系。

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