Modelling for Static Elasticity and Viscoelasticity of Honeycomb Paperboard and Parameters Identification

ZHU Da-peng

Packaging Engineering ›› 2015 ›› Issue (21) : 1-6.

Packaging Engineering ›› 2015 ›› Issue (21) : 1-6.

Modelling for Static Elasticity and Viscoelasticity of Honeycomb Paperboard and Parameters Identification

  • ZHU Da-peng
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Abstract

The experiment studied quasi-static mechanical properties of honeycomb paperboard. A compressionrecovery experiment was performed on the honeycomb paperboard specimen, a polynomial was used to model the elastic force, while the viscoelasticity was modeled by fractional derivative. Because of the symmetries in the imposed deformation time history, the force difference between the loading and unloading process was only affected by the viscoelastic parameters. A viscoelastic parameter identification method was presented based on the force difference data and trust region method, the elastic parameters were also identified by using the least-square method. The comparison of the experimental data with the simulation indicated the model presented in this paper can reproduce the static behavior of honeycomb, the maximum error was no more than 7%. The 3-order polynomial and 5-parameter viscoelastic model can be used to simulate the static mechanical properties of honeycomb paperboard. The model presented in this paper provided theoretical basis for the analysis of mechanical properties and stress-stain time-dependent properties of honeycomb paperboard and for the packaging design method optimization.

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ZHU Da-peng. Modelling for Static Elasticity and Viscoelasticity of Honeycomb Paperboard and Parameters Identification[J]. Packaging Engineering. 2015(21): 1-6

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