New Insight into Predicting the Compression Flow Behavior of Metal Foam
- Resource Type
- Authors
- Qiqi Ge; Yongliang Mu; Guoyin Zu; Yongdong He
- Source
- Metallurgical and Materials Transactions A. 51:6132-6135
- Subject
- 010302 applied physics
Materials science
Structural material
Metallurgy
Constitutive equation
0211 other engineering and technologies
Metals and Alloys
02 engineering and technology
Metal foam
Mechanics
Condensed Matter Physics
01 natural sciences
Ideal gas
Isothermal process
Nonlinear system
Mechanics of Materials
0103 physical sciences
Metallic materials
Hardening (metallurgy)
021102 mining & metallurgy
- Language
- ISSN
- 1543-1940
1073-5623
A novel constitutive model for predicting the compression behaviors of closed-cell Al foam was proposed. In contrast to existing models, it gives a nonlinear stress-strain response, which is in accordance with the hardening behaviors of foam. The new constitutive relation is derived based on the mean-field approximation and isothermal reversible compression approximation of ideal gas. Except for the overestimated densification behavior, good agreement is observed between the stress-strain curves and the predictions of the model.