STRUCTURAL RESPONSE OF STEEL-TO-COMPOSITE HYBRID JOINTS UNDER TENSILE LOADING

摘要

The U.S. Navy is investigating the feasibility of hybrid combatant hulls with composites providing tailorability and reduced signature and steel providing excellent stiffness, strength, and ductility. Hybrid joints are most critical and are of major interest to the Office of Naval Research (ONR) Hybrid Composites Survivable Structures Program. This ongoing research project is in support of this ONR program. Specifically the integrity of several hybrid steel-to-composite joint details under static and dynamic loading is being examined. The research has involved collaboration with two companies involved in a STTR Phase I Option funded by ONR and supported by Naval Surface Warfare Center Carderock Division (NSWCCD). This research gives necessary information on how various hybrid joint configurations fail under both static and dynamic loading compared to conventional joints. The paper focuses specifically on several hybrid joint concepts subjected to static loading. Experimental results have been compared to results from Finite Element Analysis (FEA).