Alternative Hull Materials and Concepts
This program addresses materials and structures under extreme dynamic conditions and alternative hull structures, both in basic and applied research areas. The fundamental research is focused on understanding the scientific phenomena associated with extreme loading events on materials from blast to shockwave and from high velocity to hyper velocity impact. Special emphasis is placed on developing novel experiments, diagnostics and characterizations to formulate constitutive models, and develop multi-scale computational methods to understand the micro structural material behavior of different materials at relevant temporal and special scales. There is a specific interest in understanding the shock physics of polymers, glassy materials and other materials, and the thermodynamic processes involved in material instabilities and phase transformation under extreme conditions.
Alternative hull structure interest areas include: the mechanics of mitigating blast effects as well as fluid/structure interaction related to slamming sea loads; on ship structures, submersibles and vehicles; associated with the use of novel coatings, meta-materials, shear thickening fluids, foams and other energy absorbing materials and structures.
Research Concentration Areas
The applied research identifies computational codes for modeling & simulation (M&S) of weapons effects on naval structures and design of protection systems. It addresses protection from extreme conditions (blast, ballistics and shockwave mitigation), hybrid material systems, e.g. polymer coatings with steel, aluminum or composites to enhance their performance. Testing in extreme conditions of weapon effects (hyper velocity impact, and laser effects), including development of diagnostics (during and post event) and design against extreme conditions. Developing concepts for innovative lightweight naval structures and increased survivability, while providing lower life cycle cost and construction cost and increasing the naval structure offensive and defensive capabilities. It addresses M&S, testing and design for chaotic events, instabilities, and fracture and failure resulting from extreme conditions and weapon effects.
Research Challenges and Opportunities
- Measurement of all the thermodynamic parameters and rates (pressure, temperature, and associated phase in hypervelocity impact experiments)
- Development of computational capability that incorporates non-conservative forces, and address both failure instabilities and fracture
- Developing a polymer with high strain rate and pressure sensitivity better than Polyurea.
- Development of coatings for implodables and submersibles for increased survivability.
Program Contact Information
How to Submit
For detailed application and submission information for this research topic, please see our Funding Opportunities page and refer to broad agency announcement (BAA) No. N00014-21-S-B001.
- Contracts: All white papers and full proposals for contracts must be submitted through FedConnect; instructions are included in the BAA.
- Grants: All white papers for grants must be submitted through FedConnect, and full proposals for grants must be submitted through grants.gov; instructions are included in the BAA.