圆柱壳在径向冲击载荷作用下的弹性脉冲屈曲
Elastic Pulse Buckling of Cylindrical Shells under Radial Impulsive Loading
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摘要: 当圆柱壳承受径向脉冲载荷时,如果其径厚比大于一特定值,圆柱壳将产生弹性动力屈曲.本文根据有关实验结果,假定变形模态,采用Lagrange方法分析了有限长薄圆柱壳(a/h=480)在余弦冲击载荷作用下的弹性脉冲动力屈曲.导出了动力屈曲方程组,借助数值方法求解方程,并与有关计算结果进行了比较.Abstract: When a cylindrical shell is subjected to dynamic implusive loading in radialdirection and foe ratio of radius-to-thickness exceeds a special value.the cylindricalshell will produce elastic dynamic buckling.This paper which is based on foe results ofsome relative experiments,assumes deformation mode and utilizes Lagrange method toanalyse the elastic pluse buckling of a thin cylindrical shell with a finite length under acosine impulse.The dynamic buckling equations are derived and solved by numericalmethod.The results of calculation are compared with some relative calculation resultswhich were obtained by other authors.
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Key words:
- cylindrical shells /
- impulsive loading /
- elastic dynamic buckling
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[1] H.E.Lindberg and A.L.Florence,Dynamic Pulse Buckling,Martinus Nijhoff,The Netherland(1987),104-136. [2] Panl R.Gefken,Steven W.Kirkpatrick and Bayard S.Holmes,Response of impulsively loaded cylindrical shells,Int.J.Impact Engng.,7(2)(1955),213-227. [3] W.S.Strickland,J.E.Milton,C.A.Ross and L.J.Mente,Failure of a luminum cylindrical shells subjected to transverse blast loadings,Shock Vib.Bull.,47(4)(1977),111-120. [4] Steven W.Kirkpatriok and Bayard S.Holmes,Structural response of thin cylindrical shells subjected to impulsive external loads,AlAA Journal,26(1)(1988),96-103. [5] H.E.Lindberg and A.L.Florence,Dynamic Pulse Buckling,Martinus Nijhoff,The Netherland(1957),140-149. [6] J.N.Goodier and I.K.Mclvor,The elastic cylindrical shell under uniform redial impulse,ASME Trans.,J,Appl.Mech.,Serie E,86(31)(1964),25-266. -
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