Instability Predictions for Circumferentially Cracked Type-304 Stainless Steel Pipes under Dynamic Loading Volume 2: Appendixes

摘要

This report provides methods to predict margins of safety for circumferentially cracked Type 304 stainless steel pipes subjected to applied bending loads. An integrated combination of experimentation and analysis research was pursued. Two types of experiments were performed: (1) laboratory-scale tests on center-cracked panels and bend specimens to establish the basic mechanical and fracture properties of Type 304 stainless steel, and (2) full-scale pipe fracture tests under quasi-static and dynamic loadings to assess the analysis procedures. Analyses were based upon the simple plastic collapse criterion, a J-estimation procedure, and elastic-plastic large-deformation finite element models.nIt was found that the plastic-collapse failure criterion, modified for the effect of pipe ovalization, generally provides a good prediction of the fracture load under quasi-statically applied bending loads.