Modeling the Crushing Behavior of Polymer Foams in Sandwich Structures Operating in Arctic Regions
Abstract
Modeling the Crushing Behavior of Polymer Foams in Sandwich Structures Operating in Arctic Regions. It is desirable to use structural polymer foams in the core of navy composite sandwich vessels operating in Arctic regions, where temperatures can be as low as -60 degree Celsius.These foams are currently used in the manufacture of affordable and extremely strong and stiff, lightweight sandwich structures. They can be made with high toughness and impact resistance and their shock attenuation characteristics have made them dependable materials for sandwich structures exposed to blast and impact. An added benefit of using them in the Arcticregion is their excellent insulation properties. However, very little is known about the crushing behavior and energy absorption of these materials at Arctic temperature regimes. The objective of this research project is to characterize and quantify the crushing and post-yield behavior of foams at very low temperatures through experimentation and analytical modeling. Foams that are currently used in marine surface and subsea applications, such as Divinycell H100, HM100 and HCP30, are of interests in this research. Experiments will be conducted to characterize the elastic and post-yield behavior of these foams at temperatures 20, 0, -20,-40, -60 deg C. Hysteresis curves of the foam will be obtained in multiple modes, including in-plane and out-of-plane compression, tension and shear using Arcan butterfly and dumbbell specimens and Digital Image Correlation techniques in previous ONR-sponsored research. Such experiments have never been conducted before and are necessary to quantify foam crushing behavior at Arctic temperatures.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 20, 2020
- Source ID
- N000142012604
Entities
People
- Michelle Hoo Fatt
Organizations
- Office of Naval Research
- United States Navy
- University of Akron