Effects of imperfection on buckling strength of cylinders in shear and bending under transverse shearing loads

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:191362

Murakami, Toshiaki; Yoguchi, Hiromitsu; Hirayama, Hiroshi ^[1]; Nakamura, Hideharu; Matsuura, Shinichi ^[2]

---

1. Toshiba Corp., Yokohama (Japan)
2. Central Research Inst. of Electric Power Industry, Chiba (Japan)

The main vessel of a fast breeder reactor (FBR) is a relatively thin-walled cylindrical shell with a reactor core, coolant and shallow-dished head at one end. In this paper, imperfection effects of cylinders on buckling in shear and in bending were clarified with regard to degradation of buckling strength and energy absorption capacity under seismic loads. The imperfections considered here were (1) boundary condition (end closure), (2) geometric imperfections in the manufacturing process and (3) geometrical imperfections in operating conditions (ratcheting deformations). Static and pseudo-dynamic buckling tests for nearly perfect cylinders and cylinders with intentional imperfections made by press-working technique were carried out under transverse shearing loads. These imperfection effects were clarified from test results and FEM and nonlinear SDOF response analyses.

• OSTI ID: 191362
• Report Number(s): CONF-950740--; ISBN 0-7918-1337-1
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
DEFORMATION
EARTHQUAKES
EXPERIMENTAL DATA
FBR TYPE REACTORS
FINITE ELEMENT METHOD
MECHANICAL TESTS
PRESSURE VESSELS
SEISMIC EFFECTS