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.
|Number of pages||7|
|Journal||Transactions of the Korean Society of Mechanical Engineers, A|
|Publication status||Published - 2016 Feb|
Bibliographical notePublisher Copyright:
©2016 The Korean Society of Mechanical Engineers.
- Damage simulation
- Ductile fracture
- Finite element analysis
- High strain rate condition
ASJC Scopus subject areas
- Mechanical Engineering