Monotonic and Ultra-Low-Cycle Fatigue Behaviour of Pipeline Steels: Experimental and Numerical Approaches

This book covers the development of innovative computational methodologies for the simulation of steel material fracture under both monotonic and ultra-low-cycle fatigue. The main aspects are summarised as follows: i) Database of small and full-scale testing data covering the X52, X60, X65, X70 and X80 piping steel grades. Monotonic and ULCF tests of pipe components were performed (buckled and dented pipes, elbows and straight pipes). ii) New constitutive models for both monotonic and ULCF loading are proposed. Besides the Barcelona model, alternative approaches are presented such as the combined Bai-Wierzbicki-Ohata-Toyoda model. iii) Developed constitutive models are calibrated and validated using experimentally derived testing data. Guidelines for damage simulation are included. The book could be seen as a comprehensive repository of experimental results and numerical modeling on advanced methods dealing with Ultra Low Cycle Fatigue of Pipelines when subjected to high strain loading conditions.

本書涵蓋了創新的計算方法，用於模擬鋼材在單調和超低循環疲勞下的斷裂。主要內容如下：
i) 數據庫包含了X52、X60、X65、X70和X80管道鋼等級的小型和全尺寸測試數據。進行了管道組件的單調和超低循環疲勞測試（包括彎曲和凹陷的管道、彎頭和直管）。
ii) 提出了新的單調和超低循環疲勞加載的本質模型。除了巴塞羅那模型外，還提出了其他方法，如結合了Bai-Wierzbicki-Ohata-Toyoda模型。
iii) 使用實驗測試數據對開發的本質模型進行了校準和驗證。書中還包括了損傷模擬的指南。本書可以被視為在高應變加載條件下，對於管道的超低循環疲勞進行先進方法的實驗結果和數值建模的綜合存儲庫。