Jul. 23, 2025 Home   |   About Journal   |   Editorial Board   |   Instruction   |   Subscriptions   |   Contacts Us   |   中文
  2013, Vol. 34 Issue (6): 550-556    DOI:
论文 Current Issue | Archive | Adv Search |
Adaptability of Four Strength Criterions in Polymer Bonded Explosives Strength Analysis
Download: PDF (1255 KB)   HTML (1 KB) 
Export: BibTeX | EndNote (RIS)      
Abstract  Strength criterion is an important component in explosive failure mechanics, and is also the basis of appraising the supporting capacity of explosive parts. Two types of polymer bonded explosives (PBXs), HMX-based PBX and TATB-based PBX, are employed. An end-bounded cylinder collapse method, based on uniaxial loading technique, is proposed to test strength failure under complex stress states. The stress field is presented according to finite element simulation, and the adaptability of criterions in PBXs’ strength analysis is illustrated based on principal stresses of initial failure position at last. Among these four criterions, Mohr-Coulomb criterion has the best precision with a error less than 15%, Twin-shear criterion and Drucker-Prager criterion take second place, Uniaxial-strength criterion is relatively poor. On the other hand, Uniaxial-strength criterion has the best safety threshold with a margin more than 75%, Mohr-Coulomb criterion, Twin-shear criterion and Drucker-Prager criterion follow. In a word, Mohr-Coulomb criterion can predict the apparent strength upper limit of HMX-based PBX and the lower limit of TATB-based PBX, whose upper limit can be predicted by Twin-shear criterion.
Key wordsSolid mechanics      Strength criterion      Polymer bonded explosive      Apparent strength     
Received: 15 November 2012     
:  O346.4  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:   
URL:  
http://manu39.magtech.com.cn/Jwk_gtlxxb/EN/     OR     http://manu39.magtech.com.cn/Jwk_gtlxxb/EN/Y2013/V34/I6/550
Copyright © Editorial Board of
Supported by: Beijing Magtech