动态热机械分析预估极限抗压性能

The Estimation of Ultimate Compression Properties by Dynamic Mechanical Analysis

以 ANA发射药为例研究用动态热机械分析 (DMA)测定动态力学性能预估破坏 (极限 )抗压强度σb和极限压缩率λb的方法。应用与动态模量叠合主曲线相同的水平位移因子 ,极限抗压强度和压缩率的数据分别与动态储能模量和储能柔量主曲线有很好的叠合。结果表明 ,σb和 λb的预估值与实测值的偏差均在测试误差范围内。

In this paper, a method used to estimate the ultimate compression strength σ b and the compression ratio λ b by dynamic mechanical properties, which were measured by DMA, was proposed and ANA propellant was used as an example. By using the same horizon shift factors as dynamic modulus master curve, the data of compression strength and compression ratio were perfectly superimpose on storage modulus and storage compliance master curve. The results showed that the deveation of estimating data from testing data was within the range of experimental error.