基于损伤型本构高过载下装药强度数值仿真方法研究

推进技术 ›› 2014, Vol. 35 ›› Issue (5): 708-713.

基于损伤型本构高过载下装药强度数值仿真方法研究

王鸿丽¹,鞠玉涛¹,许进升¹,孟红磊²,王蓬勃¹

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;中国航天科技集团公司四院四十一所，陕西西安 710025;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:王鸿丽(1988—)，女，博士生，研究领域为固体火箭发动机装药结构完整性分析。E-mail :nj07wanghongli@163.com

Research on Numerical Simulation Method of Grain Strength Based on Damage Constitutive Model under High Overload

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;The 41st Institute of the Fourth Academy of CASC ，Xi ’ an 710025，China;School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China

Published:2021-08-15

摘要/Abstract

摘要： 为了准确反映改性双基推进剂装药在高过载发射条件下的破坏情况，采用基于含累积损伤的非线性粘弹性本构模型，利用ABAQUS有限元软件二次开发的UMAT子程序，对某型火箭弹在过载发射情况下的装药进行了数值研究，分析了装药在高过载条件下的变形行为和力学特性。结果显示，在最大加速度为1.39×10 4 g 的高过载下，最大应力发生在装药底部内孔处；装药径向尺寸变化很小，可以忽略发动机壳体对装药外表面的约束而将其视为自由表面。比较了最大应力强度准则和累积损伤准则对装药在加速度冲击和压强端面冲击载荷下破坏的判断，两种判据的结果都表明，装药在高过载冲击载荷下没有被破坏。

关键词: 高过载；非线性粘弹性；累积损伤；强度；固体推进剂

Abstract: In order to make accurate analysis of the grain integrity of modified double-based propellant，the numerical simulation using the secondary developed UMAT subroutine of the ABAQUS finite element software of a certain type of rocket under high overload were completed based on accumulative damage nonlinear viscoelastic constitutive model. The deformation and mechanical behavior of the grain were analyzed. The results show that the maximum stress take place in the inner circle of grain bottom under high acceleration overload with the maximum value is 1.39×10 4 g .Considering that the radial deformation of grain is too small，the constraint to grain outside surface imposed by case of solid rocket motor can be ignored and thus the grain outside surface can be taken as a free surface. Two different kinds of strength criterions were compared to judge the solid rocket propellant grain integrity under the acceleration impact load and the end face pressure impact load. The Maximum stress strength criterion as well as the strength criterion based on accumulative damage both suggest that the grain should not be destroyed.

Key words: High overload；Nonlinear viscoelastic；Accumulative damage；Strength；Solid propellant

王鸿丽,鞠玉涛,许进升,孟红磊,王蓬勃. 基于损伤型本构高过载下装药强度数值仿真方法研究[J]. 推进技术, 2014, 35(5): 708-713.

WANG Hong-li¹,JU Yu-tao¹,XU Jin-sheng¹,MENG Hong-lei²,WANG Peng-bo¹. Research on Numerical Simulation Method of Grain Strength Based on Damage Constitutive Model under High Overload[J]. Journal of Propulsion Technology, 2014, 35(5): 708-713.

参考文献

[1] 陈汝训.固体火箭发动机设计与研究(上) [M]. 北京:宇航出版社， 1991.
[2] 刘中兵，利凤祥，李越森，等. 高过载条件下固体推进剂药柱结构完整性分析计算[J]. 固体火箭技术， 2003， 26( 6) : 12- 16.
[3] 隋欣，魏志军，王宁飞，等. 炮射导弹发射过程发动机装药强度分析[J]. 弹道学报， 2009， 21(2):19-22.
[4] WANG Xin-jun， FENG Zhen-zhou， WANG Fu-sheng， et al. Dynamic Response Analysis of Bird Strike on Aircraft Windshield Based on Damage-Modified Nonlinear Viscoelastic Constitutive Relation[J]. Chinese Journal of Aeronautics ， 2007， (20):511-517.
[5] 孟红磊. 改性双基推进剂药柱结构完整性数值仿真方法研究[D]. 南京:南京理工大学， 2011.
[6] 冯震宇，王新军，王富生，等. 非线性粘弹性本构模型在有限元分析中的实现及其应用[J]. 材料科学与工程学报， 2007， 25(2):38-41.
[7] 岑威钧，朱岳明. 基于ABAQUS的土石料本构模型二次开发及其应用[J]. 水利水电科技进展， 2005， 25(6):78-81.
[8] 孟红磊，赵秀超，鞠玉涛，等. 基于累积损伤的双基推进剂强度准则及实验[J]. 推进技术， 2011， 32(1) : 109-113. (MENG Hong-lei， ZHAO Xiu-chao， JU Yu-tao， et al. Strength Criterion Based On Accumulative Damage for Double-Base Propellant and Experiment[J]. Journal of Propulsion Technology ， 2011， 32(1) : 109-113.)
[9] Audrey Jardin， Jean-Baptiste Leblond， Daniel Berghezan. Definition and Experimental Validation of a New Model for the Fatigue of Elastomers Incorporating Deviations from Miner’s Linear Law of Cumulative Damage[J]. Procedia Engineering ， 2010， 2(1):1643-1652.
[10] 彭云. 基于ABAQUS的非线性粘弹性本构模型二次开发 [ J ]. 南昌航空大学学报， 2011， 25(2):19-22.
[11] 付凯敏，黄晓明. 基于AUAQUS的修正Burgers蠕变模型二次开发[J]. 公路工程， 2008， 33(3):132-137.
[12] 朱卫兵. 固体火箭发动机药柱结构完整性及稳定性分析[D]. 哈尔滨:哈尔滨工程大学， 2005.
[13] Bills K W. Observations On The Linear Cumulative Damage Concept[C]. Maryland: Proceedings of the JANNAF Structures And Mechanical Behavior Subcommittee Meeting， Chemical Propulsion Information Agency Publication ， 1980:57-59.
[14] Laheru K L. Development of a Generalized Failure Criterion for Viscoelastic Materials [J]. Journal of Propulsion And Power ， 1992， 8(3):756-759.
[15] 魏卫，王宁飞. 高加速度冲击下固体推进剂药柱轴向形变的数值模拟[J]. 固体火箭技术， 2003， 26(2):42-45.