دانلود رایگان مقاله لاتین تحلیل لامینیت موجدار از سایت الزویر
عنوان فارسی مقاله:
تجزیه و تحلیل سختی لامینیت موجدار تحت تغییر شکل بزرگ
عنوان انگلیسی مقاله:
Stiffness analysis of corrugated laminates under large deformation
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Corrugated structures have a highly anisotropic behavior due to their geometry. They have a very high compliance in one direction while they have very high bending stiffness about the same axis due to the significant amount of material placed away from the neutral axis. The high bending stiffness is achieved with relatively low material use, this makes them very attractive for lightweight structures for example in cardboards [1] or as structural elements in aircrafts e.g in Junkers Ju-52 to increase the stability [2]. Furthermore, they were suggested as flexible skins [3] for morphing wing applications [4–6] or lately also for artificial muscles [7]. Recently, Dayyani et al. published a review paper about corrugated structures in morphing aircrafts [8]. Due to their geometry, corrugated structures can undergo large deformations while the local strains remain relatively low [9]. In many applications the material behavior remains linear, but the large global deformations can cause non-linearities. Hence, it is important to analyze the geometric non-linear behavior of these structures. Several models exist to calculate the initial stiffness response of corrugated laminates in the form of equivalent plate properties. Xia et al. [10,11] suggested a model to calculate the homogenized equivalent stiffness values for thin and balanced laminates. Briassoulis et al. [12] modeled the equivalent mechanical properties of thin orthotropic corrugated plates. Kress et al. suggested a closed-form solution for thin corrugated laminates consisting of circular sections [13] and a numerical model that is also valid for thick laminates [14]. Biancolini et al. [1] presented a model to calculate the equivalent stiffness properties for corrugated boards. Dayyani et al. [15] investigated equivalent models for composite corrugated cores coated with an elastomer. All these models are only valid for linear analysis and do not take into account geometric non-linearities that occur under large deformation. There also exist some investigations about the non-linear behavior of corrugated laminates. Liew et al. [16] and Peng et al. [17] presented studies about the non-linear mechanical response of corrugated skins based on the mesh-free Galerkin method and first-order shear deformation theory. Thill et al. [18] investigated the mechanical behavior of trapezoidal shaped corrugated laminates under large tensile displacements transverse to the corrugation direction. Dayyani et al. [19] conducted a numerical and experimental study about the behavior of composite corrugated cores. Lately, we [20] presented an analytical model, validated with experimental and numerical data, that can predict the non-linear stiffness response of corrugated laminates in tensile loading. A comprehensive study on the non-linear structural response of corrugated laminates under all possible singly applied static loading situation can as of yet not be found in literature. The present paper presents an investigation about the geometric non-linear behavior of corrugated structures and studies the mechanics that drive the non-linear stiffness response. We consider six load cases, in particular two tensile load cases, two bending load cases, a shear load case and a torsion load case. The authors are aware of the fact that the principle of superposition does not hold in the case of non-linear analysis. Hence, we would like to emphasize that the study aims to understand the non-linear mechanisms in corrugated laminates in different loading ratherthan presenting an equivalent stiffness model where various loadings can be coupled.
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کلمات کلیدی:
New Analysis Methods for Corrugated Laminates – Laboratory of ... www.structures.ethz.ch/research/computational-structural.../new-analysis-methods.htm... Poster Non-linear stiffness response of corrugated laminates in tensile loading ... Stiffness analysis of corrugated laminates under large deformation. Claudia ... Stiffness analysis of corrugated laminates under large deformation ... isi-dl.com/item/155882 ... thejns.org, wiley.com, worldscientific.com. SEARCH. Stiffness analysis of corrugated laminates under large deformation. sciencedirect.com. Source Link ... Design and manufacturing of skins based on composite corrugated ... iopscience.iop.org/article/10.1088/1361-665X/aa6069/meta by A Airoldi - 2017 Mar 9, 2017 - Performance indices are defined to compare structural stiffness contributions in ... Kress G and Winkler M 2011 Corrugated laminate analysis: a ... [PDF]basic testing and strength design of corrugated board and containers www.byggmek.lth.se/fileadmin/byggnadsmekanik/publications/.../web1015.pdf by T NORDSTRAND - Cited by 13 - Related articles The first studies concerned testing and analysis of corrugated board in ... method, liner, local buckling, packaging, panel, paper, stiffness, strength, test method, ..... corrugated board panel is regarded as a laminated shear deformable ... Mechcomp3: 3rd International Conference of Mechanics of Composite https://books.google.com/books?isbn=889385029X Antonio J.M. Ferreira, Erasmo Viola, Francesco Tornabene - 2017 - Technology & Engineering The results were analysed via Analysis of Variance (ANOVA). ... The stiffness, however, was higher when particles were included in all layers. ... Such corrugated laminates exhibit interesting mechanical effects on local and global structural ... [PDF]Buckling Behaviour of Composite Laminated Corrugated ... - cocomat www.cocomat.de/Endmeeting/Abstracts/49-ASRI-Wu.pdf by CL Wu - Cited by 3 - Related articles Keywords： Composite, Corrugated plate, Equivalent Stiffness ... Buckling analysis of stiffened and unstiffened corrugated panels was dealt with via a mesh-.
