Abstract
An elastic analysis for a hole side plate (breadth 265mm and height 220mm) of the corrugated fiberboard case with the grip hole (breadth 50mm, height 2r=25mm and distance h0=25∼75mm between the hole center and upper edge of the plate) under uniform stress in the upper hole center was performed by finite element method, and from this analysis, relations between stress components and h0 were considered.
Large absolute values of normal stressesσx andσy in breadth and height directions and shear stressτxy are near the upper edge and sides of the hole. Maximum of|σx|is at the middle of the upper edge in the hole of h0<41. 25mmm and at the middle in the upper plate edge of h0≥41. 25mm, and maximum of|σy|is at hole sides of h0<75mm and at the middle of the upper edge in the hole of h0≥75mm. And maximum (=|τxymin|) of|τxy|is at positions r⁄2 (r : curvature radius of the hole) in upper direction from hole side. The maximum ofσy increases with h0 increase, and other absolute values of maximum and minimum components decrease.
