Numerical investigation of compliance equations used in the R-curve testing for clamped SE(T) specimens

作者：Huang Y; Zhou W^*

来源：Fatigue and Fracture of Engineering Materials and Structures, 2015, 38(10): 1137-1154.

DOI：10.1111/ffe.12293

• compliance
• R curve
• single-edge tension (SE(T))
• three-dimensional finite element analysis (3D FEA)

Three-dimensional finite element analysis of clamped single-edge tension specimen is performed to examine the accuracy of the crack-mouth opening displacement compliance equations reported in the literature. The analysis covered both plane-sided and side-grooved specimens with a wide range of specimen configurations including nine relative crack lengths (a/W) ranging from 0.1 to 0.9 and seven relative thicknesses (B/W) ranging from 0.25 to 4. Based on the finite element analysis results, the crack length/compliance modification factors (((a/W)) and ((BCE))) are developed to improve the accuracy of the compliance equations. The results of this study can improve the accuracy of the experimentally determined J-R and CTOD-R curves using the single-specimen technique and single-edge tension specimens.

• 出版日期2015-10