Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5016371 | International Journal of Mechanical Sciences | 2016 | 13 Pages |
Abstract
In this work, a load-independent creep constraint parameter Q* was introduced, and its load-independence was confirmed by 3D finite element analyses of six different cracked specimens. A fixed distance r=0.2 mm ahead of crack tips was chosen to define the Q*. In addition, the parameter Q* was used to quantify the in-plane constraint induced by crack depths, specimen widths and loading configurations and the constraint effects induced by specimen thicknesses. The results revealed that the values of Q* increased with increasing the crack depths (a/W â¤0.5) and specimen thicknesses and decreased with increasing the width-thickness ratio W/B of specimens. Furthermore, the highest constraint level occurred in the CT specimen while the lowest occurred in the CCT specimen.
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Authors
Lianyong Xu, Xingfu Zhang, Lei Zhao, Yongdian Han, Hongyang Jing,