摘要
为探究带助爆环锥反拱爆破片在快速加压工况下的失效机理及爆破压力影响因素,结合爆破试验,对爆破片的爆破过程进行了数值模拟,探讨了爆破片结构参数对爆破压力的影响规律。研究结果表明,反拱带锥型爆破片的爆破可分为稳定压缩、根部塌陷、高速翻转-刺破和高速翻转-断裂4个阶段。其中,爆破片的根部塌陷主要由压缩膜力引起;在根部塌陷之后,爆破片丧失了稳定性,并开始高速翻转;爆破片与助爆环锥接触后,接触区域的膜力和剪力迅速增大,超过屈服极限,此时,爆破片的断裂失效模式为拉伸-剪切混合失效。爆破片的爆破压力受爆破片拱高、厚度及直径影响较大,受助爆锥结构参数的影响很小。爆破片的爆破压力随拱高和直径的增大而减小,随厚度的增加而明显增大。研究结果可为反拱爆破片结构优化设计及其工程应用提供理论依据。
To investigate the failure mechanism and influencing factors of bursting pressure for reverse arch bursting discs with booster ring cones under rapid pressurization,numerical simulations of the bursting process were conducted alongside burst tests,examining the influence of structural parameters on bursting pressure.Research results show that the bursting process of reverse arch conical bursting discs comprises four stages:stable compression,root collapse,high⁃speed flipping⁃piercing,and high⁃speed flipping⁃tearing.Among these,root collapse is primarily induced by compressive membrane forces.After root collapse,the disc loses stability and initiates high⁃speed flipping.Upon contacting the booster ring cone,membrane forces and shear stresses in the contact area rapidly exceed the yield limit,resulting in tensile⁃shear mixed failure.Bursting pressure is significantly influenced by disc arch height,thickness,and diameter,but minimally affected by booster cone structural parameters.Bursting pressure decreases with increasing arch height and diameter,while increasing substantially with greater thickness.The research results can provide a theoretical basis for the optimal design and engineering application of the reverse arch bursting disc structure.
作者
梁浩
余耀文
陈长海
蒲炜强
LIANG Hao;YU Yaowen;CHEN Changhai;PU Weiqiang(Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang 621900,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《压力容器》
北大核心
2025年第3期20-28,共9页
Pressure Vessel Technology
基金
国家自然科学基金项目(52071149)。
关键词
反拱爆破片
爆破压力
失效机理
助爆环锥
结构参数
reverse arch bursting disc
bursting pressure
failure mechanism
booster ring cone
structural parameters
