HTPB固化胶片的超弹性本构模型

推进技术 ›› 2012, Vol. 33 ›› Issue (5): 795-798.

HTPB固化胶片的超弹性本构模型

常武军,鞠玉涛,胡少青

南京理工大学机械工程学院,江苏南京 210094;南京理工大学机械工程学院,江苏南京 210094;南京理工大学机械工程学院,江苏南京 210094

发布日期:2021-08-15
作者简介:常武军(1988—),男,硕士生,研究领域为固体火箭发动机装药结构完整性。E-mail:chang3517@163.com
基金资助:
总装重点预研项目(20101019)。

Research on Hyperelastic Constitutive Model for HTPB Crosslinked Specimen

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Published:2021-08-15

摘要/Abstract

摘要： 为描述HTPB固化胶片的力学特性,采用单轴拉伸试验方法,研究了载荷作用下的应力响应特征,建立了超弹性本构模型,并拟合试验数据得到超弹性本构参数；对比分析了Mooney-Rivlin和不同阶次的Ogden型应变能函数。结果表明,Mooney-Rivlin和二阶以上的Ogden型拟合的本构参数都能很好地表征HTPB固化胶片拉伸载荷下的力学行为,且Ogden型超弹性本构可用于预测HTPB固化胶片轻微压缩载荷下的力学特性。

关键词: HTPB粘合剂;超弹性;本构模型;应变能函数

Abstract: HTPB crosslinked characteristic is the basis of the mechanical properties of composite propellant. To describe the properties of HTPB crosslinked specimen, by means of uniaxial tension test, the stress response characteristics under loading were studied, and hyperelastic constitutive model was established. Experimental data was fitted to acquire hyperelastic constitutive parameters, and then compared Mooney-Rivlin with Ogden strain energy function. The results show that the constitutive parameters of Mooney-Rivlin and more than second-order Ogden model can effectively characterize the mechanical behavior of HTPB crosslinked specimen. Ogden model can be used to predict the slight compression mechanical properties of HTPB crosslinked specimen.

Key words: HTPB binder; Hyperelastic; Constitutive model; Strain energy function

常武军,鞠玉涛,胡少青. HTPB固化胶片的超弹性本构模型[J]. 推进技术, 2012, 33(5): 795-798.