Ultimate Strength of Steel Panels and Stiffened Plates with Longitudinal Through-thickness Cracks under Compression

Abstract

A series of nonlinear finite element analysis for unstiffened and stiffened plates with initial defect is carried out by ANSYS software. The ultimate strength of steel panels and stiffened plates with longitudinal through-thickness cracks under longitudinal compression is studied in this paper. The influence of mesh size, initial deflections of plate and stiffeners to ultimate strength is considered in the numerical analyses. Comparisons between the results by the paper and those from the experiment are made. The effects of crack position, plate thickness on ultimate strength are investigated and discussed for unstiffened plates. The different increasing values of the ultimate strength contributed by adding plate thickness, stiffeners with same steel weight, with crack either in plate or in plate-stiffener connection are compared. Finally, some conclusions are drawn with practical significance to engineering.

Structural Resistance of Simplified Side Hull Models Accounting for Stiffener Design and Loading Type

“…Quantification of the structural results in this work provides a set of reference data that build on pioneering works on plated structures, which predominantly applied shell elements. ese works have varied, e.g., nonlinear buckling [47], compressive strength [48,49], and plate-beam combination [50]. Salomon [51] studied similar subjects to those presented in this work and introduced an analytical theory describing different deflection phenomena on the shell model and 3D model (solid).…”

Ultimate Strength Behaviour and Optimization of Laser-Welded Web-Core Sandwich Panels under In-Plane Compression

“…In the present study, the first mode of linear eigenvalue buckling analysis is chosen to simulate the initial deformation of plates and stiffened plates. However, the ultimate strength and the mode of collapse of the stiffened panels are affected only slightly [43,44].…”