RDX晶体颗粒聚集体压缩刚度曲线的振荡分析

为考察晶体颗粒压制过程的振荡现象,对三类五种RDX晶体颗粒进行了压缩刚度试验,发现压制曲线的振荡特征与单个颗粒凝聚强度有密切关系。定义并测量了破碎阶段的压制曲线振荡幅值,其中重结晶RDX样品的振荡幅值约为2.4 MPa,远高于普通RD X颗粒的1.2 MPa,而高品质D-RDX的振荡幅值为4.4 MPa,表明D-RDX破碎的许用应力最高,其晶体颗粒凝聚强度得到显著提高。研究表明利用压缩刚度法分析颗粒品质特征还需考虑曲线振荡幅值,同时也表明高品质的晶体颗粒不易通过压制获得较理想的破碎状态。

Fluctuation Analysis of Compression Curves of RDX Crystalline Ensembles

In order to investigate the fluctuation phenomena of RDX crystalline particles subject to pressing, the compression stiffness tests (CST) were conducted for five types RDX crystalline particle ensembles from three sources and it is found that the fluctuation of the compression relates closely to the coherence strength of single particle of RDX. The measured fluctuation amplitudes of re-crystallized is about 2.4 MPa, which is much higher than that of commonly used RDX, say, 1.2MPa, and D-RDX bears the highest fluctuation amplitude of 4.4 MPa, it means that D-RDX has a maximum largest allowable failure stress and its quality has been well improved compared to the rest of the samples. This study shows that when using CST to evaluate the quality, the fluctuation should be considered carefully.