Fracture behavior of PBX simulation subject to combined thermal and mechanical loads

被引:81
|
作者
Liu, Z. W. [1 ]
Xie, H. M. [2 ]
Li, K. X. [1 ]
Chen, P. W. [3 ]
Huang, F. L. [3 ]
机构
[1] Beijing Inst Technol, Sch Astronaut, Dept Mech, Beijing 100081, Peoples R China
[2] Tsinghua Univ, Dept Eng Mech, FML, Beijing 100084, Peoples R China
[3] Beijing Inst Technol, Natl Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
基金
中国国家自然科学基金;
关键词
PBXs; Particulate composite; Fracture behavior; Creep strain; CREEP; EXPLOSIVES;
D O I
10.1016/j.polymertesting.2009.05.011
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The fracture behavior and mechanical properties of a Polymer Bonded Explosives (PBX) simulation material were studied using the Digital Image Correlation (DIC) method. The fracture mechanism was analyzed as the material was subjected to combined thermal and mechanical loads. The macroscopic fracture mode changed from mainly shear action to a combination of extension and shear action, whereas the microscopic fracture changed from cleavage fracture and transcrystalline rupture to interfacial debonding, breaking of filler particles and a combination of transcrystalline and intercrystalline rupture. Microanalysis of the creep properties showed the random nature of initial damage and the interaction between creep, damage and nearby damage, were the main reasons for the local creep strain repetition increase. During the process of high temperature creep, extensive cracks are first formed followed by the initiation and extension of shear cracks, eventually joining and causing a macroscopic fracture within the material. The main microscopic fracture mode has been found to be intercrystalline cracking and binder tearing failure. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:627 / 635
页数:9
相关论文
共 50 条
  • [1] Fracture of electrostrictive solids subjected to combined mechanical and electric loads
    Gao, Cun-Fa
    Mai, Yiu-Wing
    ENGINEERING FRACTURE MECHANICS, 2010, 77 (10) : 1503 - 1515
  • [2] Numerical Modelling of the Mechanical Behaviour of Steel Pipes subject to Combined Loads
    Sanchez Sanchez, H. A.
    Perez de la Cruz, M. J.
    Flores Cobos, V.
    PROCEEDINGS OF THE TENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY, 2010, 93
  • [3] Dynamic Mechanical Behavior of PBX
    Xiao, You Cai
    Sun, Yi
    Li, X.
    Zhang, Q. H.
    Liu, S. W.
    Yang, H.
    PROPELLANTS EXPLOSIVES PYROTECHNICS, 2016, 41 (04) : 629 - 636
  • [5] Simulation and Experimental Study on the Thermal Shock Behavior of Notched PBX Cylinders
    Tang, Ming-Feng
    Gan, Hai-Xiao
    Wen, Mao-Ping
    Wang, Sheng-Nan
    Hanneng Cailiao/Chinese Journal of Energetic Materials, 2021, 29 (01): : 41 - 47
  • [6] Thermal mechanical behavior of a functionally graded shape memory alloy cylinder subject to pressure and graded temperature loads
    Xue, Lijun
    Mu, Haozhi
    Feng, Jingjing
    JOURNAL OF MATERIALS RESEARCH, 2018, 33 (12) : 1806 - 1813
  • [7] Thermal mechanical behavior of a functionally graded shape memory alloy cylinder subject to pressure and graded temperature loads
    Lijun Xue
    Haozhi Mu
    Jingjing Feng
    Journal of Materials Research, 2018, 33 : 1806 - 1813
  • [8] THERMOMECHANICAL FATIGUE UNDER COMBINED AND INDEPENDENT THERMAL AND MECHANICAL LOADS
    IVANOV, AI
    TRAKHTENBERG, BF
    FEDOTOV, AF
    INDUSTRIAL LABORATORY, 1979, 45 (09): : 1054 - 1057
  • [9] A novel approach to analyzing thermoelastic behavior of brake disc under the combined action of thermal and mechanical loads
    Meng, Dejian
    Zeng, Xiangxin
    Zhang, Lijun
    Li, Birui
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2025, 224
  • [10] The mechanical behavior of RPC under combined shear and compressive loads
    Shen, Le
    Ding, Miao
    Chen, Kang
    Feng, Chen
    Yang, Bo
    Elchalakani, Mohamed
    CEMENT & CONCRETE COMPOSITES, 2021, 121