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工程力学  2013 

霍普金森拉杆装置螺纹过渡段变形测量修正

DOI: 10.6052/j.issn.1000-4750.2012.03.0188

Keywords: 霍普金森杆,螺纹连接,过渡段,变形测量,修正方法

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Abstract:

基于经典三波法理论,提出了一种适用于分离式霍普金森拉杆实验装置的动态拉伸变形测量修正方法。该方法可有效避免入射杆、透射杆和试件之间的螺纹连接以及过渡段对拉伸试验结果造成的信号干扰。同时用LY12铝合金进行了霍普金森杆动态拉伸与压缩(SHTB/SHPB)试验,采用所提出的修正方法对LY12铝合金动态拉伸试验变形数据进行了修正;经过与压缩试验结果的比较分析验证了该文所提修正方法的合理性与适用性,并据此对拉伸试件外形给出了建议。

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