Effect of shear span-to-depth ratio on the mechanical behavior of composite sandwich beams with GFRP ribs and balsa wood core materials

2020 ◽  
Vol 154 ◽  
pp. 106799
Author(s):  
Fubin Zhang ◽  
Jing Xu ◽  
Bwiza Esther ◽  
Haijun Lu ◽  
Hai Fang ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Sandwich Beams ◽  
Balsa Wood ◽  
Shear Span ◽  
Composite Sandwich ◽  
Depth Ratio ◽  
Core Materials

Core Failure Modes in Composite Sandwich Beams

2001 ◽  
Author(s):  
Isaac M. Daniel ◽  
Emmanuel E. Gdoutos ◽  
Jandro L. Abot ◽  
Kuang-An Wang
Keyword(s):  
Failure Modes ◽  
Sandwich Beams ◽  
Deformation And Failure ◽  
Balsa Wood ◽  
Composite Sandwich ◽  
The Core ◽  
Aluminum Honeycomb ◽  
Failure Loads ◽  
Materials Failure ◽  
Core Materials

Abstract Core failure modes were studied in composite sandwich beams under three-point bending and in cantilever beams under end loading. The beams consisted of unidirectional carbon/epoxy face sheets and a variety of core materials, including aluminum honeycomb, PVC closed-cell foams, polyurethane foam and balsa wood. The constituent materials were fully characterized and in the case of the core materials, failure envelopes were developed for biaxial states of stress. Deformation and failure mechanisms were studied experimentally by means of moiré gratings and birefringent coatings. Results were obtained for stress (strain) distributions in the linear and nonlinear/plastic range of the core, critical failure loads and their dependence on geometrical dimensions, material parameters and loading conditions.

Impact Behavior of Sandwich Beams With Various Composite Facesheets and Balsa Wood Core

2001 ◽  
Author(s):  
J. L. Abot ◽  
A. Yasmin ◽  
I. M. Daniel
Keyword(s):  
Impact Loading ◽  
Woven Fabric ◽  
Low Velocity Impact ◽  
Impact Behavior ◽  
Sandwich Beams ◽  
Low Velocity ◽  
Balsa Wood ◽  
Composite Sandwich ◽  
Fabric Composite ◽  
Comprehensive Study

Abstract This study presents a combined experimental and theoretical analysis of both unidirectional and woven fabric composite sandwich beams under low velocity impact loading. The sandwich beams were fabricated by bonding carbon/epoxy facesheets to a balsa wood core. All constituent materials including facesheets, cores and adhesives were fully characterized separately under stress conditions similar to those encountered in the sandwich structures. A comprehensive study that includes fabrication, mechanical testing and analysis of these structures under both quasi-static and impact loading was performed. The failure mechanisms were also analyzed. Existing models developed by the authors for sandwich beams with PVC foam cores were extended to predict impact loads for sandwich beams with balsa wood core.

Bending response of carbon fiber composite sandwich beams with three dimensional honeycomb cores

2014 ◽  
Vol 108 ◽  
pp. 234-242 ◽  
Author(s):  
Jian Xiong ◽  
Li Ma ◽  
Ariel Stocchi ◽  
Jinshui Yang ◽  
Linzhi Wu ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Fiber Composite ◽  
Three Dimensional ◽  
Sandwich Beams ◽  
Carbon Fiber Composite ◽  
Composite Sandwich ◽  
Honeycomb Cores ◽  
Bending Response

Carbon Foam Core Composite Sandwich Beams: Flexure Response

2005 ◽  
Vol 39 (12) ◽  
pp. 1067-1080 ◽  
Author(s):  
M. D. Sarzynski ◽  
O. O. Ochoa
Keyword(s):  
Carbon Foam ◽  
Foam Core ◽  
Sandwich Beams ◽  
Composite Sandwich

DESIGN OF EDGE INSERTS FOR COMPOSITE SANDWICH BEAMS

2001 ◽  
Vol 25 (4) ◽  
pp. 39-42 ◽  
Author(s):  
S.A. Miers ◽  
J.B. Ligon ◽  
I. Miskioglu
Keyword(s):  
Sandwich Beams ◽  
Composite Sandwich

Buckling and postbuckling of delaminated composite sandwich beams

AIAA Journal ◽  
1992 ◽  
Vol 30 (7) ◽  
pp. 1901-1909 ◽  
Author(s):  
Chyanbin Hwu ◽  
Jian Shiun Hu
Keyword(s):  
Sandwich Beams ◽  
Composite Sandwich

Effective Mechanical Behavior of Sandwich Beams under Uncoupled Bending and Torsion Loadings

2014 ◽  
Vol 590 ◽  
pp. 58-62 ◽  
Author(s):  
Hugo Miguel Silva ◽  
José Filipe Bizarro de Meireles
Keyword(s):  
Mechanical Behavior ◽  
Design Optimization ◽  
Sandwich Panels ◽  
Sandwich Beams ◽  
Honeycomb Core ◽  
Low Intensity ◽  
Specific Stiffness ◽  
Low Weight ◽  
Structural Applications ◽  
Non Linear

Sandwich geometries, mainly panels and beams are widely used in several transportation industries, namely aerospace, aeronautic and automotive. Sandwich geometries are known for their advantages in structural applications: high specific stiffness, low weight, and possibility of design optimization prior to manufacturing. This study aims to know the influence of the number of reinforcements (ribs), and of the thickness on the mechanical behavior of sandwich panels subjected to bending and torsion loads separately. In this study, 3 geometries are compared: simple web-core beam, corrugated core, and honeycomb core. The last 2 are asymmetric, due to the use of odd number of ribs. The influence of the geometry on the results is discussed, by means of a parameter that establishes a relation between the stiffness behavior and the mass of the object. It is shown that the all relations are non-linear, despite the elastic nature of the analysis, by means of the application of loads with low intensity.

Sign in / Sign up

Export Citation Format

Share Document