Abstract
This paper proposes ductile failure simulation under high strain rate conditions using finite element (FE) analyses. In order to simulate a cracked component under a high strain rate condition, this paper applies the stressmodified fracture strain model combined with the Johnson/Cook model. The stress-modified fracture strain model determines the incremental damage in terms of stress triaxiality (σm/σe) and fracture strain (ϵf) for a dimple fracture using the tensile test results. To validate the stress-modified fracture strain model under dynamic loading conditions, the parameters are calibrated using the tensile test results under various strain rates and the fracture toughness test results under quasi-static conditions. The calibrated damage model predicts the CT test results under a high strain rate. The simulated results were then compared with the experimental data.
Original language | English |
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Pages (from-to) | 167-173 |
Number of pages | 7 |
Journal | Transactions of the Korean Society of Mechanical Engineers, A |
Volume | 40 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2016 Feb |
Bibliographical note
Publisher Copyright:©2016 The Korean Society of Mechanical Engineers.
Keywords
- Damage simulation
- Ductile fracture
- Finite element analysis
- High strain rate condition
ASJC Scopus subject areas
- Mechanical Engineering