NICOP - Dynamic performance of 3D assembled composite structures
Abstract
Dynamic performance of 3D assembled composite structures:The ability to independently control fiber alignments and structural geometry is critical for design of optimal three-dimensional (3D) fibrous structures. Some initial studies have demonstrated that these optimized structures are shown to have unprecedented static and dynamic strength as well as damage tolerance and ductility. For example, the energy absorption capacity of a 3D-assembled carbon fiber bird feather rachis-like structure is shown to be 300% greater than a high performance metallic counterpart. However, the underlying science to allow for the application of these structures and materials is missing. The proposed research aims to address this deficiency by (i) developing the key dynamic experimental protocols to test these materials and structures; (ii) establishing the key engineering constitutive models for designing with these materials and (iii) developing the micro-mechanical models that allow for design of concurrently optimised structural topologies and fibre tow architectures for specific applications. The thrust of the proposed research is the design of structures and materials for use in lightweight ground vehicles that mitigate both ballistic and blast threats. Expected outcomes: The primary outcome of the project will be the underlying science of the ballistic and blast performance of 3D assembled composites structures. In particular journal papers on the mechanics of static and dynamic cracking in these structures will be written.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2016
- Source ID
- N629091612127
Entities
People
- Vikram Deshpande
Organizations
- Office of Naval Research
- United States Navy