A THEORETICAL MODEL OF TWO DIMENSIONAL EXPLOSION-DRIVEN FOR A TRUNCATED CIRCULAR CONE-SHELL CONTAINING STRESS CONCENTRATED LINE
This paper treats the stress concentrated line of a truncated circular cone-shell as plastic hinge ring, according to allowable motion constructs deformation mechanism and adopts corresponding plastic stressprofile and two-moment limited-interaction yield surface, equation of motion by explosion driven have been built for a truncated circular cone shell containing stress concentrated line. The boundary condition and initial condition has been put forward to solve the problem and has acquired analytical solution of this problem. At the same time, adopting ALE algorithm, the numerical simulation for this problem has been carried out, acquiring velocity field distribution are comparable with analytical solution. The calculated results really reappears deformation mechanism of equal curvature reversal for truncated circular cone-shell by explosion driven, and supports this paper s adopting assumption to deformation mechanism. The deformation process has been demonstrated by calculated results through doughnut-shaped separation, the central bore constringency, the crushed center ring, and separated rings launched at certain velocity gradient with time, these results are consistent with the observation phenomenon in the experiment.
FAN Ya-fu CAI Hong-nian
Yantai Branch of No.52 Institute of China Ordnance Industry Group, Yantai 264003, Shandong, China Beihang University, Beijing 100083, China
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
647-654
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）