PSI - Issue 59

B. Ganendra et al. / Procedia Structural Integrity 59 (2024) 238–245 Ganendra et al. / Structural Integrity Procedia 00 (2019) 000 – 000

240

3

( ) ,

(3)

where is the steel yield strength, E is elastic modulus, Z is the plastic sectional modulus, S is the elastic sectional modulus, D is the diameter , and t is the thickness.  European Standard / EN1993-1-6 Within this standard, the cylindrical shell structure is classified into three groups depending on the slenderness parameter . The slenderness parameter is a function of full plastic moment ( ) , radius ( R ), wall thickness ( t ), and member length ( L ) which the value of ̅ is the boundary between non-compact and compact sections where full plastic moment ( ) would likely to occur and slenderness limit ̅ is the boundary between non-compact and slender sections which the value can be determine using equation given as follows: ̅ √ (4) Furthermore, the nominal flexural strength of cylindrical shell within this standard is determined using equation given below: , (5) where is the elastic reduction factor, is the plastic range factor, is an interaction exponent, and is the resistance – reduction parameter which can be determined using given formula: ( ) ̅ ̅ , (6) ( ̅ ̅ ̅ ̅ ) ̅ ̅ ̅ , (7) ̅ ̅ (8) There are several methods that can be used to examine the bending behavior of cylindrical shell structure, i.e., the simply-supported beam test, the cantilever beam test, and the pure bending beam test. In the experiment conducted by Guo et al. (2013) steel cylindrical shells were tested using simply-supported beam and cantilever beam test with the test setup described in Figures 1 and 2, respectively. As described in Figure 1, the simply-supported beam test was conducted by applying load to a loading bar which is connected to the beam by two supporting points. On the other hand, the cantilever beam test, described in Figure 2, was conducted by applying load at one end with the other and clamped in a fixed plate.