This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Influence of Shear Loads on Crush of Honeycomb Materials
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 04, 2002 by SAE International in United States
Annotation ability available
We conduct static experiments to investigate the influence of shear stress on the crush behavior of honeycomb materials. The aluminum honeycomb materials selected in this investigation are orthotropic due to their manufacturing processes. A test fixture and honeycomb specimens are designed such that combined compressive and shear loads along the strongest material symmetry axis can be controlled and applied accurately. The experimental results indicate that both the peak and crush strengths under combined compressive and shear loads are lower than those under pure compressive loads. A yield function is suggested for honeycomb materials under the combined loads based on a phenomenological plasticity theory. The microscopic crush mechanism under the combined loads is also investigated. A microscopic crush model based on the experimental observations is developed. The crush model includes the rupture of aluminum cell walls so that the kinematic requirement can be satisfied. The results of the crush model indicate that as the shear stress increases, the crush strength decreases. The increase of shear stress also causes the wavelength of the fold to increases first and then decrease. In addition, the shear displacement of the fold increases as the shear stress increases. In general, the results of the microscopic model agree with those of the available experiments.
|Technical Paper||Crush Behaviors of Aluminum Honeycombs of Different Cell Geometries Under Compression Dominant Combined Loads|
|Technical Paper||The Design of Passenger Car Cast Aluminum Wheels|
CitationHong, S., Pan, J., Tyan, T., and Prasad, P., "Influence of Shear Loads on Crush of Honeycomb Materials," SAE Technical Paper 2002-01-0683, 2002, https://doi.org/10.4271/2002-01-0683.
- Wierzbicki T. 1983 Crushing Analysis of Metal Honeycombs International Journal of Impact Engineering 1 157 174
- Baker W. E. Togami T. C. Weydert J. C. 1998 Static and Dynamic Properties of High-density Metal Honeycombs International Journal of Impact Engineering 21 149 163
- Zhang J. Ashby M. F. 1992 The Out of Plane Properties of Honeycombs International Journal of Mechanical Science 34 475 489
- Gibson L. J. Ashby M. F. 1997 Cellular Solids Cambridge University Press Cambridge
- Zhao H. Gary G. 1998 Crushing Behavior of Aluminum Honeycombs under Impact Loading International Journal of Impact Engineering 21 827 836
- Goldsmith W. Sackman J. L. 1992 An Experimental Study of Energy Absorption in Impact on Sandwich Plates International Journal of Impact Engineering 12 241 262
- Wu E. Jiang W. 1997 Axial Crush of Metallic Honeycombs International Journal of Impact Engineering 19 439 456
- ASTM C-273-94 Standard Test Method for Shear Properties of Sandwich Core Materials.
- Bitzer T. 1997 Honeycomb Technology Chapman & Hall New York
- Hill R. 1950 The Mathematical Theory of Plasticity Oxford University Press New York