Mode I plane stress crack-tip constraint for elastic-plastic materials with different strain hardening |
| |
Authors: | Sun Jun |
| |
Affiliation: | (1) Department of Materials Science and Engineering, Xi'an Jiaotong University, 710049 Xi'an, People's Republic of China |
| |
Abstract: | Finite element analyses and simulations have been undertaken to investigate the triaxial constraint in the crack-tip regions of a stationary crack and a steady-state growing crack under mode I plane stress for elastic-plastic materials with different strain hardening. The results show that the triaxial constraint in the crack-tip region is independent of specimen geometry, and material strain hardening, both for a stationary and an extending crack quasi-statically. The triaxial constraints for the various configurations examined are in better accordance with those required by the HRR solution for a stationary crack, which defines the low and similar constraints in crack-tip regions for different material strain hardening in the plane stress case. Along the entire ligament ahead of a crack tip, the constraint level transites gradually from that defined by the HRR solution within the near tip zone to that characterized by the stress intensity factor K
I in the far field. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|