Confinement effects on the dynamic compressive properties of an epoxy syntactic foam.
- University of Arizona, Tucson, AZ
Dynamic compressive properties of an epoxy syntactic foam at various strain rates under lateral confinement have been investigated with a pulse-shaped split Hopkinson pressure bar (SHPB). The quasi-static responses were obtained with an MTS 810 materials test system. The quasi-static and dynamic stress-strain behavior of the foam under confinement exhibited an elastic-plastic-like response whereas an elastic-brittle behavior was observed under uniaxial stress loading conditions. The modulus of elasticity and yield strength, which had higher values than those in uniaxial stress case, were both sensitive to strain rates. However, the strain-hardening behavior under confinement was not strain-rate sensitive. A phenomenological elastic-plastic type of material model was employed to describe the strain-rate-dependent compressive properties of the syntactic foam under confinement, which agreed well with experimental results.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1004341
- Report Number(s):
- SAND2003-3082J
- Journal Information:
- Proposed for publication in Journal of Composite Structures., Journal Name: Proposed for publication in Journal of Composite Structures. Journal Issue: 3 Vol. 67; ISSN 0263-8223; ISSN COMSE2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Compressive Properties of a Closed-Cell Aluminum Foam as a Function of Strain-Rate and Temperature.
Characterization and Modeling of Polymeric Foam Under Multi-Axial Static and Dynamic Loading