A damage model for void configuration and failure under different constrained deformation regions in ductile matrix

作者：Kikuchi M^*; Geni M

来源：Metals and Materials (Institute of Metals), 2001, 7(4): 337-341.

• MMC
• SiC particle
• SEM
• FEM
• stress-triaxiality
• void volume fraction
• void configuration
• gurson model

The constraint effects of SiC particle volume fractions and their specimen geometry are analyzed by conducting tensile tests while changing the SiC particle volume fraction 0%, 2% and 10% and the tensile specimen notch radius 0.5, 1.0, 2.0, 4.0, 8.0 and 16.0 mm. The effect of constraint on the void configuration and coalescence are investigated experimentally using 3-dimensional SEM fracture surface observations and 3-dimensional. image analysis. It was found that the final void volume fraction and void shape were greatly affected by stress triaxiality and deformation constraint.

• 出版日期2001-8
• 单位新疆大学