摘要
针对一次性使用的防爆筒端盖进行设计,使其满足1.5kg TNT的爆炸冲击。爆炸后容器内产生的压力会使端盖产生变形,造成端盖的结构应力和变形分布不均,其中端盖厚度参数对其变形的影响更为显著。通过公式计算和经验数据的数值缩比对端盖厚度取2个极限值,利用ANSYS有限元软件对极限值区间内的不同端盖厚度进行静态受力分析,选取25mm作为设计厚度。为更好地验证设计的合理性,对整个筒体的1/4进行建模和爆炸数值模拟,即对端盖进行更为准确的动态力分析。数值计算结果表明,最大应力值小于端盖材料的屈服极限985 MPa,端盖最大位移量小于2 mm,变化范围较小。研究结果表明,设计具有一定的可行性。
The end cover of disposable explosion proof cylinder was designed to make it meet the explosive impact of 1 5 kg TNT. The pressure generated in the container after explosion will cause the deformation of the end cover ^ tural stress and deformation distributions therein, where the influence of the end cover thickness on the deformation is more sig-nificant Two limit values of the end cover thickness were adopted through the formula calculation and scaling and the static ;^orce analysis of end covers with different thickness within the limit value range were conducted by using ANSYS fi-nite element software, where 25 mm was selected as the design thickness. To better verify the rationality of the design, numerical modelling and simulation were carried out on 1/4 of the whole cylinder for more accurate dynamic force analysis on the end cover. The numerical results show that the maximum stress value of the end cover is less than the yield limit 985 MPa of the end cover material, and the maximum displacement of the end cover is less than 2 mm with smaller range of variation. The results show that the design is feasible.
作者
韩悦
高喜银
HAN Yu e;GAOXiyin(College of Mechanical＆ Klectrical Kngineering , Hebei Agricultural University, Baoding, Hebei 071000, China)
出处
《中国科技论文》
北大核心
2017年第22期2549-2554,共6页
China Sciencepaper
关键词
端盖设计
有限元分析
密闭式防爆筒
应力
位移
design of end cover
finite element analysis
closed explosion proof cylinder
stress
displacement
