Experimental and Computational Analysis of Progressive Failure in Bolted Hybrid Composite Joints
Abstract
Composite materials are strong, lightweight, and stiff making them desirable in aerospace applications. However, a practical issue arises with composites in that they behave unpredictably in bolted joints, where damage and cracks are often initiated. To address this problem, a novel hybrid composite material was developed, where thin stainless steel foils were placed between and in place of composite plies in the primary layup to reinforce stress concentrations in bolted joints. Hybridizing the composite material increased yield by as much as 25 and increased ultimate load capacity as much as 42 . The finite element models employed Hashin failure criteria and proved the ability to predict the yield load capacity to within 6.5
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 24, 2020
- Accession Number
- AD1129091
Entities
People
- John S. Jr Brewer
Organizations
- Air Force Institute of Technology