Analysis of microbuckling for monomolecular layers adhering to a substrate

Analysis of microbuckling for monomolecular layers adhering to a substrate
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附着在基材上的单分子层的微屈曲分析

DOI:
10.1007/bf02487963
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发表时间:
2002-12
期刊:
Acta Mech Sinica
影响因子:
--
通讯作者:
G. Li
G. Li
中科院分区:
其他
文献类型:
--
作者:
T. Chang;W. Guo;G. Li

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建立了二维线性弹簧模型,研究了平面单分子层附着在基体上的微屈曲现象。该模型适用于受与层的化学键成任意角度的压缩载荷作用的层。讨论了载荷角、粘结强度、层的弯曲刚度和剪切刚度(抗横向弯曲和面内剪切的能力)对层的最小屈曲力和临界屈曲模态的影响。最小屈曲力随载荷角度的增大而增大,对于一定的弯曲刚度,随粘接强度的增大和剪切刚度的减小而增大。此外,还得到了层刚刚发生屈曲的临界条件,这有助于在工程应用中避免屈曲。
A two-dimensional linear spring model is established to study the microbuckling of a plane monomolecular layer adhering to a substrate. The model is for the layer subjected to a compressive load having an arbitrary angle with the chemical bond of the layer. The effects of the load angle, the strength of adhesion and the bending stiffness and shearing stiffness (the capability of resisting transverse bending and in-plane shearing) of the layer on the minimal buckling force and the critical buckling mode are discussed. It is found that the minimal buckling force increases with increasing load angle and, for a given bending stiffness, increases with increasing strength of adhesion and decreasing shearing stiffness. Furthermore, a critical condition under which the buckling of the layer can just occur is obtained, which is helpful to avoid buckling in an engineering application.
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发表时间: 1999-03
期刊: Journal of Applied Mechanics
影响因子: --
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