论文部分内容阅读
从动态力学表征、损伤机理、动态断裂和动态本构4个方面,对固体推进剂动态力学行为进行了综述。分析表明,动态力学实验重点关注固体推进剂的初始弹性模量、屈服应力、强度等参数,填充颗粒破裂是动态损伤的主要形态,动态断裂主要集中动态起裂研究,并对3类动态本构模型性进行了评述。在此基础上,梳理了下一步研究的重点,认为深化实验研究、力学数值模拟和含损伤热粘-超弹性动态本构模型将是下一步研究的重点。
The dynamic mechanical behavior of solid propellants is reviewed from the aspects of dynamic mechanical characterization, damage mechanism, dynamic fracture and dynamic constitutive. The analysis shows that the dynamic mechanical experiments mainly focus on the initial elastic modulus, yield stress and strength of the solid propellants. The fractured particles are the main forms of dynamic damage, and the dynamic fracture mainly focuses on dynamic cracking. Model was reviewed. On the basis of this, the key points of the next research are combed, and deepening experimental research, numerical simulation of mechanics and dynamic constitutive model of thermal viscous-hyperelastic damage will be the focus of the next step.