Stiffness analysis of corrugated laminates under large deformation

被引：12

作者：

Thurnherr, C. ^{[1
]}

Ruppen, L. ^{[1
]}

Brandli, S. ^{[1
]}

Franceschi, C. M. ^{[1
]}

Kress, G. ^{[1
]}

Ermanni, P. ^{[1
]}

机构：

[1] ETH, Dept Mech & Proc Engn, Lab Composite Mat & Adapt Struct, Tannenstr 3, CH-8092 Zurich, Switzerland

来源：

COMPOSITE STRUCTURES | 2017年 / 160卷

基金：

瑞士国家科学基金会;

关键词：

Corrugated laminates; Non-linearity; Flexible skins; Anisotropy; MORPHING AIRCRAFT; EQUIVALENT MODELS; FSDT;

D O I：

10.1016/j.compstruct.2016.10.079

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper presents a detailed investigation about the geometric non-linear stiffness behavior of corrugated laminates in six different load cases. The considered tensile, bending, and shear load cases allow the modeling with a unit-cell approach assuming a generalized plane strain state. The torsional load case is more complex. There the mechanical response depends on the number of unit-cells and the width of the samples in case of geometric non-linearities. We first identify the load cases that show a non-linear stiffness response under large deformation. Then the non-linear behavior is analyzed in detail using numerical simulation and we aim for mechanical explanations to describe the non-linear behavior. The FE simulations of the torsional load case are validated using experiments with 3D printed samples. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：457 / 467

页数：11

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