Low-velocity perforation of punch-impact-loaded metal plates

The deformation and failure of structures when loaded statically or dynamically is important for safety calculations of various structural systems in the nuclear engineering, vehicle crash-worthiness, offshore engineering, naval architecture, and defense industries. In particular, the deformation and perforation behavior of plates is important for the design of containment and protective structures against projectiles or dropped objects or impact by fragments generated during an industrial explosion. Here, an approximate quasi-static theoretical analysis is presented for the behavior of punch-impact-loaded metal plates. Based on the principle of virtual work, load-deflection relationships are first obtained and then used to predict the energy-absorbing capabilities of plates subjected to low-velocity impacts that cause perforation. It is demonstrated that the theoretical predictions are in good agreement with experimental observations on fully clamped steel plates when material strain rate sensitivity is taken into consideration and provided that perforation does not occur by adiabatic shear plugging.

[1]  C. Ruiz,et al.  Impact loading of plates — An experimental investigation , 1983 .

[2]  Nicholas Perrone,et al.  A Simplified Method to Account for Plastic Rate Sensitivity With Large Deformations , 1979 .

[3]  G. Eason,et al.  Velocity fields for circular plates with the von Mises yield condition , 1958 .

[4]  C. R. Calladine.  CHAPTER IV – THEOREMS OF PLASTIC THEORY , 1969 .

[5]  A. Sawczuk.  Large deflections of rigid-plastic plates , 1966 .

[6]  M. Langseth,et al.  Dropped objects' plugging capacity of steel plates: An experimental investigation , 1990 .

[7]  Norman Jones,et al.  A Comment on the Low Speed Impact of a Clamped Beam by a Heavy Striker , 1991 .

[8]  N. Jones,et al.  Experimental Investigation into the Dynamic Plastic Response and Perforation of a Clamped Circular Plate Struck Transversely by a Mass , 1994 .

[9]  Yu Jilin,et al.  Further experimental investigations on the failure of clamped beams under impact loads , 1991 .

[10]  Nicholas Perrone,et al.  Simplified Large Deflection Mode Solutions for Impulsively Loaded, Viscoplastic, Circular Membranes , 1984 .

[11]  M. Langseth,et al.  The behaviour of square steel plates subjected to a circular blunt ended load , 1992 .

[12]  Y. Bai,et al.  Plugging: physical understanding and energy absorption , 1982 .

[13]  Norman Jones,et al.  Experimental investigation of the scaling laws for metal plates struck by large masses , 1993 .

[14]  Norman Jones,et al.  Quasi-static analysis of structural impact damage , 1995 .

[15]  R M Haythornthwaite,et al.  The Load Carrying Capacity of Circular Plates at Large Deflection , 1954 .

[16]  Norman Jones,et al.  A theoretical study of the dynamic plastic behavior of beams and plates with finite-deflections , 1971 .

[17]  Stephen R Reid,et al.  Deformation and failure of clamped beams under low speed impact loading , 1995 .