冲击载荷下贫氧推进剂的压缩力学响应
发布时间：2018-08-06 11:07
【摘要】：为了解贫氧推进剂在冲击载荷下的力学响应,实施了贫氧推进剂的SHPB实验,获得了推进剂相应的动态压缩力学特性。实验结果表明,贫氧推进剂在高应变率下具有显著的应变率敏感性,推进剂的应力随应变率增加而不断上升;推进剂的最大应力与应变率对数存在线性关系;从应力-应变曲线推断,该推进剂在高应变率变形时表现出粘弹性和超弹性相结合的性质。实验研究可作为研究贫氧推进剂药柱在点火阶段结构完整性的重要依据。
[Abstract]:In order to understand the mechanical response of oxygen-poor propellants under impact loading, the SHPB experiments of oxygen-poor propellants were carried out, and the corresponding dynamic compression mechanical properties of the propellant were obtained. The experimental results show that the strain rate sensitivity of oxygen-poor propellants is remarkable at high strain rate, and the stress of the propellant increases with the increase of strain rate, and there is a linear relationship between the maximum stress and the logarithm of strain rate. It is inferred from the stress-strain curve that the propellant exhibits a combination of viscoelasticity and hyperelasticity at high strain rate deformation. The experimental study can be used as an important basis for studying the structural integrity of oxygen-poor propellants in the ignition stage.
【作者单位】： 南京理工大学机械工程学院;
【分类号】：V512.3
本文编号：2167541
[Abstract]:In order to understand the mechanical response of oxygen-poor propellants under impact loading, the SHPB experiments of oxygen-poor propellants were carried out, and the corresponding dynamic compression mechanical properties of the propellant were obtained. The experimental results show that the strain rate sensitivity of oxygen-poor propellants is remarkable at high strain rate, and the stress of the propellant increases with the increase of strain rate, and there is a linear relationship between the maximum stress and the logarithm of strain rate. It is inferred from the stress-strain curve that the propellant exhibits a combination of viscoelasticity and hyperelasticity at high strain rate deformation. The experimental study can be used as an important basis for studying the structural integrity of oxygen-poor propellants in the ignition stage.
【作者单位】： 南京理工大学机械工程学院;
【分类号】：V512.3
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