Imperial College London


Faculty of EngineeringDepartment of Civil and Environmental Engineering

Reader in Structural Engineering



+44 (0)20 7594 6078l.macorini




Ms Ruth Bello +44 (0)20 7594 6040




325Skempton BuildingSouth Kensington Campus






BibTex format

author = {Santos, L and Nordas, A and Izzuddin, B and Macorini, L},
doi = {10.1680/jencm.18.00021},
journal = {Proceedings of the ICE - Engineering and Computational Mechanics},
title = {Mechanical models for local buckling of metal sandwich panels},
url = {},
volume = {171},
year = {2018}

RIS format (EndNote, RefMan)

AB - Modern design methods for sandwich panels must attempt to maximise the potential of such systems for weight reduction, thus achieving highly optimised structural components. A successful design method for large-scale sandwich panels requires the consideration of every possible failure mode. An accurate prediction of the various failure modes is not only necessary but it should also utilise a simple approach that is suitable for practical application. To fulfil these requirements, a mechanics-based approach is proposed in this paper to assess local buckling phenomena in sandwich panels with metal cores. This approach employs a rotational spring analogy for evaluating the geometric stiffness in plated structures, which is considered with realistic assumed modes for plate buckling leading to accurate predictions of local buckling. In developing this approach for sandwich panels with metal cores, such as rectangular honeycomb cores, due account is taken of the stiffness of adjacent co-planar and orthogonal plates and its influence on local buckling. In this respect, design-oriented models are proposed for core shear buckling, intercellular buckling of the faceplates and buckling of slotted cores under compressive patch loading. Finally, the proposed design-oriented models are verified against detailed non-linear finite-element analysis, highlighting the accuracy of buckling predictions.
AU - Santos,L
AU - Nordas,A
AU - Izzuddin,B
AU - Macorini,L
DO - 10.1680/jencm.18.00021
PY - 2018///
SN - 1755-0777
TI - Mechanical models for local buckling of metal sandwich panels
T2 - Proceedings of the ICE - Engineering and Computational Mechanics
UR -
UR -
VL - 171
ER -