Finite element nonlinear dynamic analysis of sandwich plates with partially detached facesheet and core

Linear and Nonlinear Dynamic Analyses of Sandwich Panels with Face Sheet‐to‐Core Debonding

“…The latter scheme has a weaker enforcement of contact constraints, Figure 6(b), but it is less computationally expensive than other methods available in ABAQUS, for example, the method of Lagrange multipliers. A detailed description of these contact schemes can be found, for example, in [74,75,79,80]. Furthermore, the finite element models accounting for "real contact" can recover stress distributions caused by both contact/impact actions and deformations.…”

“…Figure 21 shows the transient time signals of the von Mises stresses calculated at the centre and the point of boundary of the debonded zone on the top face sheet. More detailed results, regarding the transient dynamic response and the dynamic stress state occurring in the debonded sandwich plate, can be found in our papers [10,75,79].…”

“…Although we went through each case and explained each of the dependencies found, one can highlight our papers [79,80], which can be viewed for further insights and details in this area.…”

“…Other contact models addressed to discovering the role of interlaminar contact on the nonlinear dynamics of sandwich and laminated panels accounting for geometrical nonlinearity have been proposed in [76][77][78]. A nonlinear contact model within an implicit approach has been elaborated in [79,80] to explore the dynamics of sandwich panels with debonding, which are subjected to harmonic forces. The research reported a complex dynamic behaviour of such panels highly dependent on the driving frequency that is inherent in structures with conditions of friction and contact [81].…”

Geometrically nonlinear transient analysis of delaminated composite and sandwich plates using a layerwise displacement model with contact conditions

“…Consideration of existing interfacial damage often is relevant for the assessment of the residual lifetime of such structures [3]. This requires adequate computational models able to consider delamination of plates in dynamic loading environments.…”