Numerical modelling of Nomex honeycomb sandwich cores at meso-scale level

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• 作者：Ralf Seemann ; ^{ralf.seemann@tuhh.de" class="auth_mail" title="E-mail the corresponding author} ; Dieter Krause
• 关键词：Nomex honeycomb ; Phenolic resin ; Explicit FEA ; Virtual testing
• 刊名：Composite Structures
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：159
• 期：Complete
• 页码：702-718
• 全文大小：3966 K

文摘

Increasing interest in detailed meso-models of Nomex honeycomb cores has led to numerous different approaches and material parameters for the Nomex cell wall material. The present study benchmarks the available approaches using a virtual testing procedure, where experimental results from tensile, compressive and shear tests on a Nomex honeycomb core are compared to numerical results from equivalent virtual tests using ABAQUS/Explicit. Applying a simple orthotropic elasto-perfectly plastic material model in a single layer leads to a good match between experimental and numerical results. Therefore, this approach is recommended for general application in detailed Nomex honeycomb models.