Dwell Behavior of Ceramic Matrix Composites During the Projectile Penetration
GAO Jubin1,2, WANG Yangwei3, 4,WANG Fuchi3,4, SUN Jianzhuo1,2
(1.Beijing Aeronautical Science and Technology Research Institute of COMAC, Beijing 102211, China;
2. Beijing Key Laboratory of Civil Aircraft Structures and Composite Materials, Beijing 102211, China;
3. National key laboratory on materials science and technology under shock and impact, Beijing 100081, China;
4. School of materials science and technology, Beijing Institute of Technology, Beijing 100081, China )
Abstract：With the purpose of increasing application value and revealing the ballistic mechanism of ceramic matrix
composites, it is necessary to investigate dwell phenomenon and ballistic performance of the material in the process
of projectile penetration. In this paper, the behavior law of dwell is studied by utilizing numerical simulation method. The
dwell behavior of aforementioned materials is investigated. Stress level and damage evolution of ceramic composites during
dwell process are analyzed, and compared to common armor ceramics at the same condition. It is concluded that energy
dissipated during dwell process reaches 845J in ceramic composite, respectively increasing by 46.0%, 30.2% and 35.7%
to the energy of B4C, SiC and AD99 Al2O3. The damage evolution in ceramic during dwell process is different from that
in ceramic and full damaged composites can bear higher compression load than ceramics in the same state. As a result, the
damage energy dissipation of composites accounts for 23.9% of the total dwell energy dissipation, which is almost twice as
much as that dissipated in ceramic.
2017, 
