Study of material mass efficiency and numerical analysis of modified CFRP laminate in bearing conditions

Study of material mass efficiency and numerical analysis of modified CFRP laminate in bearing... In aircraft structures, skeleton supports the primary loads and transfers point loads into the skin. Connections of structural components are the areas of point load transfer. The aim of the paper is a study of material quality in mechanical joints and analysis of a laminate in bearing conditions. A mass efficiency parameter is necessary to perform a mass–strength optimisation, e.g. quasi-isotropic CFRP are examples of high specific stiffness materials. Unfortunately, strength of laminates is reduced by notch sensitivity. An interesting attempt to improve bearing performance of composites is bonding titanium foils in the hole vicinity. The object of study is HTA/913 laminate. Analyses are performed for basic and locally modified laminates with different foils content and configuration. Interface cohesive model is used to simulate the delamination process. Bearing strength depends on parameters of the adhesive interface and insert material content and stiffness. Numerical and experimental results are in good agreement. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Composite Structures Elsevier

Study of material mass efficiency and numerical analysis of modified CFRP laminate in bearing conditions

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0263-8223
eISSN
1879-1085
D.O.I.
10.1016/j.compstruct.2015.08.031
Publisher site
See Article on Publisher Site

Abstract

In aircraft structures, skeleton supports the primary loads and transfers point loads into the skin. Connections of structural components are the areas of point load transfer. The aim of the paper is a study of material quality in mechanical joints and analysis of a laminate in bearing conditions. A mass efficiency parameter is necessary to perform a mass–strength optimisation, e.g. quasi-isotropic CFRP are examples of high specific stiffness materials. Unfortunately, strength of laminates is reduced by notch sensitivity. An interesting attempt to improve bearing performance of composites is bonding titanium foils in the hole vicinity. The object of study is HTA/913 laminate. Analyses are performed for basic and locally modified laminates with different foils content and configuration. Interface cohesive model is used to simulate the delamination process. Bearing strength depends on parameters of the adhesive interface and insert material content and stiffness. Numerical and experimental results are in good agreement.

Journal

Composite StructuresElsevier

Published: Dec 15, 2015

References

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