爆炸焊接锐楔区动力学状态参数数值分析

PDF(1375 KB)

振动与冲击 ›› 2013, Vol. 32 ›› Issue (5) : 96-98.

论文

爆炸焊接锐楔区动力学状态参数数值分析

谢飞鸿，吴启红，李文渊，万世明，杨有莲

作者信息 +

Numerical calculation analysis on dynamics parameter of explosive welding in sharp wedge zone

XIE Fei-hong，WU Qi-hong，LI Wen-yuan，WAN Shi-ming，YANG You-lian

Author information +

文章历史 +

摘要

用运动界面高精度差分格式求解二维Navier-stokes方程，直接模拟不同炸药爆轰速度、基复板安装间距碰撞点锐楔区的压力场及速度流场，分析爆炸复合板锐楔区压力场分布特点及历时作用形式，发现爆轰压力作用下基板表面产生不同程度的反激波现象，及锐楔区空气介质流动在弯折复板与基板之间呈扇形状分布的层流射流状态流动。锐楔区反激波现象研究对爆炸焊接熔化层形成的分析具有一定参考价值。

Abstract

Used to high-precision differential format of movement interface for deriving two-dimensional Navier-stokes equation， to directly simulate pressure and velocity flow field in based-upset board installation sharp wedge of collision point at different explosives detonation velocity， mainly analyze pressure distributions characteristic and duration action lasted form of explosive Composite plate explosion in sharp wedge zone， it will be found different degrees of anti-shock produced phenomenon under detonation pressure in substrate surface， also can simulate to find air medium flow distribution in fan-shaped jet state laminar flow bending shape between upset and based plate， this study can be certain reference for explosive welding melt layer formed analysis. A finite element model and its boundary conditions of quayside gantry crane are established in this paper. The first ten natural frequencies， the corresponding mode shapes and time-history of displacement response are given based on the analysis of the modes and dynamic response of this gantry crane system. The calculation and analysis above may be helpful for preventing the gantry crane from working on resonant area and for keeping the oversize dynamic deformation under restraint， which can be applied to design quayside gantry crane systems.

导出引用

谢飞鸿;吴启红;李文渊;万世明;杨有莲. 爆炸焊接锐楔区动力学状态参数数值分析[J]. 振动与冲击, 2013, 32(5): 96-98

XIE Fei-hong;WU Qi-hong;LI Wen-yuan;WAN Shi-ming;YANG You-lian. Numerical calculation analysis on dynamics parameter of explosive welding in sharp wedge zone[J]. Journal of Vibration and Shock, 2013, 32(5): 96-98