A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Optimized structural sandwich panels with minimum delamination hazards
Structural sandwich panels with two-dimensional cellular core are subject to an increased delamination hazard. This effect is caused by an incompatibility in the modes of deformation associated with the cellular core and the homogeneous face sheets. The aim of the present study is the minimization of the delamination hazard induced by this deformation incompatibility. The delamination hazard is assessed by means of an energetic criterion based on the additional strain energy stored in the cell walls next to the face sheets. This strain energy is minimized by a variation of the core geometry using a sequential quadratic programming method while constraints with respect to the geometry and the global structural performance are applied. In two examples, a significant optimization potential with respect to the delamination hazard is made accessible without any loss in global structural performance and overall weight.
Optimized structural sandwich panels with minimum delamination hazards
Structural sandwich panels with two-dimensional cellular core are subject to an increased delamination hazard. This effect is caused by an incompatibility in the modes of deformation associated with the cellular core and the homogeneous face sheets. The aim of the present study is the minimization of the delamination hazard induced by this deformation incompatibility. The delamination hazard is assessed by means of an energetic criterion based on the additional strain energy stored in the cell walls next to the face sheets. This strain energy is minimized by a variation of the core geometry using a sequential quadratic programming method while constraints with respect to the geometry and the global structural performance are applied. In two examples, a significant optimization potential with respect to the delamination hazard is made accessible without any loss in global structural performance and overall weight.
Optimized structural sandwich panels with minimum delamination hazards
Hohe, J. (author) / Becker, W. (author)
Structural and Multidisciplinary Optimization ; 23 ; 448-459
2002
12 Seiten, 15 Quellen
Article (Journal)
English
Optimized structural sandwich panels with minimum delamination hazards
| British Library Online Contents | 2002
Delamination and crack prevention layer for structural sandwich panels
| European Patent Office | 2016
Facesheet-Core Interface Delamination in Sandwich Panels
| British Library Online Contents | 2015
Delamination from localized instabilities in compression sandwich panels
| British Library Online Contents | 2001
Numerical/experimental study of facesheet delamination for honeycomb FRP sandwich panels
| British Library Conference Proceedings | 2003