拉伸速率对HTPB推进剂并行流变框架模型的影响
2025,47(1):42-50
周仕明
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
徐一航
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
李道奎
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
申志彬
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
徐一航
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
李道奎
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
申志彬
国防科技大学 空天科学学院， 湖南 长沙 410073 ;
空天任务智能规划与仿真湖南省重点实验室， 湖南 长沙 410073
摘要：
为分析四组元HTPB推进剂不同拉伸速率组合对并行流变框架模型的精度影响，基于并行流变框架建立了推进剂的非线性黏弹性本构模型；通过对不同拉伸速率实验进行组合构建了本构模型，得到相应的模型参数。将有限元模型和数值计算结果与实验结果进行对比，将不同速率组别构建的本构模型误差进行了对比分析。结果表明当采用高速率与低速率组别相结合的方式即可精确建立本构模型，无须进行中间速率的大量实验。且高速率推进剂拉伸实验的速率可以截至3 000 mm/min，无须再增加速率。此分析为简化推进剂材料实验提供了合理建议，提高了实验效率。同时，为快速预测推进剂材料的力学性能开辟了一条有效途径。
为分析四组元HTPB推进剂不同拉伸速率组合对并行流变框架模型的精度影响，基于并行流变框架建立了推进剂的非线性黏弹性本构模型；通过对不同拉伸速率实验进行组合构建了本构模型，得到相应的模型参数。将有限元模型和数值计算结果与实验结果进行对比，将不同速率组别构建的本构模型误差进行了对比分析。结果表明当采用高速率与低速率组别相结合的方式即可精确建立本构模型，无须进行中间速率的大量实验。且高速率推进剂拉伸实验的速率可以截至3 000 mm/min，无须再增加速率。此分析为简化推进剂材料实验提供了合理建议，提高了实验效率。同时，为快速预测推进剂材料的力学性能开辟了一条有效途径。
基金项目：
国家自然科学基金资助项目（11872372）；湖南省杰出青年基金资助项目（2021JJ10046）；湖南省自然科学基金资助项目（2021JJ30770）
国家自然科学基金资助项目（11872372）；湖南省杰出青年基金资助项目（2021JJ10046）；湖南省自然科学基金资助项目（2021JJ30770）
Influence of tensile rate on parallel rheological framework model of HTPB propellant
ZHOU Shiming
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
XU Yihang
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
LI Daokui
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
SHEN Zhibin
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
XU Yihang
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
LI Daokui
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
SHEN Zhibin
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073 , China ;
Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073 , China
Abstract：
In order to analyze the effect of different combinations of stretching rates of four-component HTPB propellant on the accuracy of the parallel rheological framework model, a nonlinear viscoelastic constitutive model of the propellants was developed based on the parallel rheological framework method. A constitutive model was constructed by combining experiments with different tensile rates, the corresponding constitutive model parameters were obtained and compared with experimental results using finite element models and numerical calculations. The constitutive model errors of the calibration for different rate groups were compared and analyzed. The results show that the model can be calibrated more accurately when a combination of high rate and low rate groups is used, without the need for extensive experiments at intermediate rates. And the high rate propellant tensile test rate can be up to 3 000 mm/min, no need to increase the rate. This analysis provides justified suggestions for simplifying propellant material tests and improving the efficiency of the experiments. Concurrently, it paves an effective way to rapidly predict the mechanical properties of propellant materials.
In order to analyze the effect of different combinations of stretching rates of four-component HTPB propellant on the accuracy of the parallel rheological framework model, a nonlinear viscoelastic constitutive model of the propellants was developed based on the parallel rheological framework method. A constitutive model was constructed by combining experiments with different tensile rates, the corresponding constitutive model parameters were obtained and compared with experimental results using finite element models and numerical calculations. The constitutive model errors of the calibration for different rate groups were compared and analyzed. The results show that the model can be calibrated more accurately when a combination of high rate and low rate groups is used, without the need for extensive experiments at intermediate rates. And the high rate propellant tensile test rate can be up to 3 000 mm/min, no need to increase the rate. This analysis provides justified suggestions for simplifying propellant material tests and improving the efficiency of the experiments. Concurrently, it paves an effective way to rapidly predict the mechanical properties of propellant materials.
收稿日期：
2022-06-16
2022-06-16
