Page 44 - 《含能之美》2019封面论文

416 段晓畅，孙杰，刘迎彬，常双君，赵龙，袁洪魏，唐维

Uniaxial Quasi⁃static Stress⁃strain Relationship of TATB⁃based PBX Based on SVM Algorithm

DUAN Xiao⁃chang 1，2 ，SUN jie ，LIU Ying⁃bin ，CHANG Shuang⁃jun ，ZHAO Long ，YUAN Hong⁃wei ，TANG Wei 2
2
2
2
1
1
（1. School of Environment and Safety Engineering，North University of China，Taiyuan 030051，China；2. Institute of Chemical Materials，CAEP，Mianyang
621999，China）
Abstract：Taking 1，3，5‑triamino‑2，4，6‑trinitrobenzene（TATB）‑based high polymer bonded explosive（PBX） material as re‑
search object，the quasi‑static uniaxial tension and compression tests were carried out at - 40-75 ℃ ，and the stress‑strain rela‑
tionship data at 17 preset temperature points were obtained. Setting temperature and strain as independent variables，stress as de‑
pendent variable，the stress‑strain relationship under the tension and compression conditions was described based on support
vector machine（SVM）algorithm，and the error analysis of the constructed relationship was carried out. The results show that
the tensile strength and compressive strength of the materials deteriorate with increasing the temperature in the temperature range
of -40-75 ℃ and the non‑linearity of stress‑strain curve and asymmetry of tension compression change obviously. Meanwhile，a
set of parameters based on SVM algorithm is used to realize the description of the tensile and compressive strain‑strain relation‑
ship of TATB‑based PBX at different temperatures，which solves the problem that the model parameters often change with tem ‑
perature. The average absolute percentage error of the constructed relationship is not more than 7.77%，and the correlation coef‑
ficients are all greater than 0.998，showing a good applicability.
Keywords：polymer bonded explosive（PBX）；support vector machine（SVM）；stress‑strain relationship
CLC number：TJ55 Document code：A DOI：10.11943/CJEM2018205

（责编：高 毅）

www.energetic-materials.org.cn
Chinese Journal of Energetic Materials，Vol.27, No.5, 2019（410-416） 含能材料