Article(id=1228295919150494260, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228295917908980268, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2025.03.019, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1706198400000, receivedDateStr=2024-01-26, revisedDate=1713715200000, revisedDateStr=2024-04-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1770778167760, onlineDateStr=2026-02-11, pubDate=1741536000000, pubDateStr=2025-03-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770778167760, onlineIssueDateStr=2026-02-11, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770778167760, creator=13701087609, updateTime=1770778167760, updator=13701087609, issue=Issue{id=1228295917908980268, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='3', pageStart='449', pageEnd='662', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770778167464, creator=13701087609, updateTime=1770949125482, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1229012967862235389, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228295917908980268, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1229012967862235390, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228295917908980268, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=623, endPage=630, ext={EN=ArticleExt(id=1228295919368598071, articleId=1228295919150494260, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Vibration characteristics of multilayer nanoplates via meshfree moving Kriging interpolation method, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

A meshless method based on moving Kriging interpolation is used to study the dynamic behavior of multilayer nanoplates. A dynamical model of multilayer molybdenum disulfide(MoS2)is established considering intra - layer stretching,interlayer shear and single layer bending. Compared with the results of molecular dynamics simulation,it is shown that the present model can predict the vibration behavior of multilayer MoS2. The interlayer shear and slip of multilayer two-dimensional structures violate the prediction of classical plate theory,mainly due to the effect of interlayer shear and slip on the overall dynamic behavior of two-dimensional structures. The influence of different layer number and size on the frequency is investigated,and the influence of the three factors on the frequency is studied by changing the intralayer tensile stiffness,interlayer shear modulus and single layer bending stiffness.

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采用基于移动Kriging插值的无网格法研究了多层纳米板的动力学行为。建立了考虑层内拉伸、层间剪切和单层弯曲的多层二硫化钼动力学模型。通过与分子动力学模拟的结果比较表明,建立的多层纳米板模型能够很好地预测多层二硫化钼的振动行为。多层二维结构层间剪切和滑移导致其违背了经典板理论的预测,主要归因于二维结构之间的层间剪切影响了其整体动力学行为。分析了层数和尺寸对振动频率的影响,研究了层内拉伸刚度、层间剪切模量和单层弯曲刚度对振动频率的影响。

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王立峰(1977—),男,博士,教授。E-mail:
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侯东昌(1991—),男,博士研究生。E-mail:

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侯东昌(1991—),男,博士研究生。E-mail:

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Physical parameters of multilayer plate[25]

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D/(N·m)μρ/(kg·m-3)h/nm
2.4369×10-180.319680.20.323
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多层板物理参数[25]

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D/(N·m)μρ/(kg·m-3)h/nm
2.4369×10-180.319680.20.323
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基于移动Kriging插值无网格法的多层纳米板振动特性研究
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侯东昌 1 , 张吉成 2 , 王立峰 2
振动工程学报 | 2025,38(3): 623-630
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振动工程学报 | 2025, 38(3): 623-630
基于移动Kriging插值无网格法的多层纳米板振动特性研究
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侯东昌1 , 张吉成2, 王立峰2
作者信息
  • 1.中原工学院建筑工程学院,河南 郑州 450007
  • 2.南京航空航天大学航空航天结构力学及控制全国重点实验室,江苏 南京 210016
  • 侯东昌(1991—),男,博士研究生。E-mail:

通讯作者:

王立峰(1977—),男,博士,教授。E-mail:
Vibration characteristics of multilayer nanoplates via meshfree moving Kriging interpolation method
Dongchang HOU1 , Jicheng ZHANG2, Lifeng WANG2
Affiliations
  • 1.School of Civil Engineering and Architecture,Zhongyuan University of Technology,Zhengzhou 450007,China
  • 2.State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016 China
出版时间: 2025-03-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.03.019
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采用基于移动Kriging插值的无网格法研究了多层纳米板的动力学行为。建立了考虑层内拉伸、层间剪切和单层弯曲的多层二硫化钼动力学模型。通过与分子动力学模拟的结果比较表明,建立的多层纳米板模型能够很好地预测多层二硫化钼的振动行为。多层二维结构层间剪切和滑移导致其违背了经典板理论的预测,主要归因于二维结构之间的层间剪切影响了其整体动力学行为。分析了层数和尺寸对振动频率的影响,研究了层内拉伸刚度、层间剪切模量和单层弯曲刚度对振动频率的影响。

多层纳米板  /  层间剪切  /  移动Kriging插值  /  无网格法  /  多层二硫化钼

A meshless method based on moving Kriging interpolation is used to study the dynamic behavior of multilayer nanoplates. A dynamical model of multilayer molybdenum disulfide(MoS2)is established considering intra - layer stretching,interlayer shear and single layer bending. Compared with the results of molecular dynamics simulation,it is shown that the present model can predict the vibration behavior of multilayer MoS2. The interlayer shear and slip of multilayer two-dimensional structures violate the prediction of classical plate theory,mainly due to the effect of interlayer shear and slip on the overall dynamic behavior of two-dimensional structures. The influence of different layer number and size on the frequency is investigated,and the influence of the three factors on the frequency is studied by changing the intralayer tensile stiffness,interlayer shear modulus and single layer bending stiffness.

multilayer nanoplate  /  interlayer shear  /  moving Kriging interpolation  /  meshfree method  /  multilayer MoS2
侯东昌, 张吉成, 王立峰. 基于移动Kriging插值无网格法的多层纳米板振动特性研究. 振动工程学报, 2025 , 38 (3) : 623 -630 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.03.019
Dongchang HOU, Jicheng ZHANG, Lifeng WANG. Vibration characteristics of multilayer nanoplates via meshfree moving Kriging interpolation method[J]. Journal of Vibration Engineering, 2025 , 38 (3) : 623 -630 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.03.019
多层二维结构的层间相互作用可以显著影响层内键合,能带结构和晶格振动,表现出与层相关的电子、光学、热、机械和振动特性[1]。多层二维结构的拉伸荷载通过层间剪切传递,因此,充分掌握二维结构层间剪切规律,对于需精准操纵和控制的二维结构柔性电子器件[2]和应变半导体[3]等技术的应用至关重要。多层二维结构的弯曲刚度与经典板理论的预测结果不符,主要归因于层间剪切和滑移,二维结构之间的层间剪切和滑移与层内拉伸和弯曲变形存在竞争,并影响整体力学响应。早期的研究通常将多层二维结构等效为单层板[4-6],显然上述效应在经典板理论中是不存在的,经典板理论的基本假设不包含层间滑动[7]。已有基于摩擦显微镜[8-9]和原子力显微镜[10-11]的实验研究揭示了二维结构层间剪切行为。然而这些研究对多层二维结构的层间变形和破坏机制的解释有限,且并未给出层间剪切的定量表征。即使是已获得广泛关注的石墨烯,对其层间剪切刚度的测量研究也是相对匮乏的。YAMASHITA等[12]对高度各向异性的天然石墨进行静态实验,测得层间剪切刚度τ在0.25~0.75 MPa之间。BLACKSLEE等[13]测量得到压缩退火热解石墨层间的剪切刚度τ为0.9~2.5 MPa。LIU等[14]通过对石墨台面上微米石墨薄片的自缩回运动[15]和微米超润滑现象[16]的观察得到τ大约为0.14 GPa。使用传统的静态力学实验测量层间抗剪强度的主要挑战是无法获得足够大的单晶石墨[17]。分子动力学模拟的准确性取决于势函数的选取[18-19]。 LEBEDEVA等[20]指出,使用Lennard-Jones(L-J)势计算多层石墨烯层间相互作用能时,其大小被低估了一个数量级。SHEN等[18]对双层石墨烯进行了滑动模拟,并计算了层间剪切模量,通过修改AI-REBO电位中的L-J参数以拟合实验结果。基于以上分析不难发现建立合理的考虑层间剪切的连续介质模型对研究多层二维结构力学行为至关重要[21]。LIU等[22]提出了一个忽略层内拉伸而考虑层间剪切的多层梁模型,该模型将层间剪切角简化为挠度的一阶导数。HUANG等[23]建立了考虑层内拉伸、层间剪切和单层弯曲的多层板模型,构建的通用分析框架可直观地展示层内拉伸、层间剪切和单层弯曲三者主导变形的转变和竞争机制。LIU等[24]采用分子动力学模拟并结合建立的考虑层间剪切的非线性夹层板模型研究了双层二硫化钼的非线性振动行为。ZHANG等[25]研究了层间剪切对双层二维结构振动的影响。通过扭转双层二硫化钼的角度,使结构的固有频率出现了异乎寻常的结果,由此提出了层间负剪切的概念来解释这一现象。随后ZHANG等[26]采用分子动力学模拟研究了不同堆垛的双层黑磷的振动行为,并建立了正交各向异性层合板模型。通过层合板模型得到了层间剪切方向和高阶模态形状与对应频率之间的关系。LIU等[27]通过分子动力学和考虑非均匀层间剪切的夹层板模型研究了扭转双层二硫化钼的动力学行为。结果表明,在很小的扭转角下,莫尔条纹会导致层间范德华能在几十纳米尺度上的对称性被破坏,并导致扭曲的双层二硫化钼的动态行为表现出很强的位置依赖性。
从以上分析不难看出,建立可描述层间剪切的多层纳米板模型对研究多层二维纳米结构的力学行为至关重要。同时此类模型的求解通常较为复杂,很难获得其解析解,因此往往需要借助数值方法求解。无网格法构造高阶形函数时所展现出来的优势深受学者们的青睐[28-29]。文献[30-31]采用基于移动最小二乘近似的无网格法,结合高阶Cauchy-Born准则研究了碳纳米管的屈曲。YAN等[32-33]采用移动Kriging插值研究了碳纳米管的屈曲。随后YAN等[34]采用移动Kriging插值研究了圆形石墨烯扭转中波纹幅度、波数和起皱角度的可控性。ROQUE等[35]采用径向点插值的无网格法获得了基于修正的偶应力理论的各向同性纳米板弯曲的数值解。THAI等[36]采用移动Kriging插值研究了基于应变梯度理论的磁电耦合功能梯度纳米板的自由振动。随后THAI等[37]又将非局部应变梯度理论,高阶剪切理论以及移动Kriging插值的无网格法相结合,建立了一种非局部应变梯度无网格法用于研究夹层纳米板的弯曲和自由振动。WANG等[38-39]基于移动最小二乘发展了一种高阶一致性的节点积分方案求解一系列应变梯度薄梁/板问题,数值结果表明,一致性积分在收敛性、精度以及计算效率方面都优于标准高斯积分。 ALSHENAWY等[40]采用移动Kriging插值研究了在轴向机械荷载、外电驱动和温度共同作用下,功能梯度压电纳米圆柱壳的屈曲模态转变现象。YANG等[41]采用移动Kriging插值研究了基于偶应力理论的复合材料纳米圆柱壳的后屈曲行为。LIU等[42]采用移动Kriging插值的无网格法研究了随机增强纳米复合材料制成的微圆柱壳在轴向和侧向压缩组合作用下的非线性屈曲和后屈曲。
本文采用基于移动Kriging插值的无网格法研究多层纳米板的动力学行为。首先建立考虑层内拉伸、层间剪切和单层弯曲的多层二硫化钼动力学模型。随后将所建立的模型与分子动力学,等效单层Kirchhoff板模型和Mindlin板模型的结果进行比较。分析不同层数和尺寸对振动频率的影响,并通过改变层内拉伸刚度、层间剪切模量和单层弯曲刚度的大小,研究三者对振动频率的影响。
多层二维纳米结构之间既没有超润滑,也没有完全贴合,每一层厚度方向的尺度仅一个或几个原子,而长、宽方向的尺度远大于厚度方向,因此将其等效为多层薄板堆叠模型,如图1所示。当其发生横向振动时会伴随着层间剪切和滑移,因此传统板模型中平截面假定不再适用。多层板模型厚度方向依旧远小于长、宽方向的尺寸,即假设每层板具有相同的挠度,因此该模型中每层板z方向的变形可等效为一个w,而每一层板的面内位移包括uv两部分。
考虑层内拉伸、层间剪切和弯曲变形的多层二维结构自由振动的总势能包括以下三部分:
式中,UT为层内拉伸应变能;US为层间剪切能;UB为弯曲能。
二维平面内层内拉伸应变能可表示为:
式中,i表示第i层,h为单层板厚度,E为弹性模量。
由于考虑层内拉伸,层与层之间的剪切角应包含两部分,分别为相邻层间滑移部分以及层内的弯曲产生的剪切角,因此层间剪切能可表示为:
式中,GxGy分别为沿x轴和y轴方向的剪切模量;N为总层数;h1为层间剪切距离。
多层板的弯曲能为:
式中,为板的抗弯刚度;μ为泊松比,为Laplace算子。
该模型中考虑单层板的面内位移uv,以及面外位移w,其动能可表示为:
式中,ρ为板的密度;分别表示对时间的一阶导数。
基于Hamilton原理,最终的变分形式为:
四边固支边界条件下,边界处位移和转角固定,其边界条件为:
任意层的位移函数可表示为:
式中,x=[ xy];n为节点数。
Φ (x)为基于移动Kriging插值的形函数,表示为:
其中,
式(9b)中R可表示为:
式中,ψ =‖x - xi ‖为点xxi之间的距离;θ = 1为相关参数;a0 = 3‖x - xi ‖为影响域。
式(9b)中P可表示为:
式中,m为多项式基的项数。
任意层的层内拉伸刚度矩阵可表示为:
式中,
层间剪切包括三部分,第一部分为相邻层之间滑动产生的剪切变形,其刚度矩阵可表示为:
式中 
第二部分为面内弯曲产生的剪切变形,其刚度矩阵为:
式中,
第三部分为上述两者之间产生的耦合矩阵:
任意层弯曲能的刚度矩阵为:
其中,
为方便最终刚度矩阵的组装,将任意层的质量矩阵分为面内质量矩阵和面外质量矩阵两部分:
式中,
最终离散方程组可表示为:
其中,总的刚度矩阵为:
总的质量矩阵为:
总的位移矩阵为:
式中,i=1,2,…,N
本节的纳米板以二硫化钼为研究对象,其物理参数见表1。为验证所建立模型的准确性,将分子动力学模拟的结果与所建立多层板模型的结果进行比对。本节分子动力学采用Lammps程序包进行模拟,通过第二代Brenner经验势来描述二硫化钼原子间的相互作用。
对于多层二硫化钼结构可近似为各向同性材料,其xzyz面内的剪切模量分别为Gx=Gy=7.54 GPa,层间厚度为h1=0.64 nm[24]。模型的长为a=6 nm ,宽为b=8 nm,边界条件为四边固支。
图2分别为采用分子动力学(MD),多层纳米板模型(MPSM)以及多层纳米板等效单层Kirchhoff板模型(KPM)和Mindlin板模型(MPM)计算得到的1~6层二硫化钼的前4阶振动频率ω
图3为分子动力学和多层纳米板模型的前4阶振型。可以看出分子动力学的振动频率与振型和本文所建立的多层纳米板模型的结果吻合得非常好,而等效的单层Kirchhoff板模型和Mindlin板模型的振动频率都高于分子动力学结果。这表明多层二维结构层间剪切和滑移导致经典板理论不再适用。主要归因于二维结构之间的层间剪切和滑移与层内变形(拉伸和弯曲)存在竞争,并影响其整体动力学行为。
图4为不同长度多层纳米板的振动频率,可以看出,随着长度的增加,多层纳米板的振动频率逐渐减小。随着层数的增加,同一长度对应的同一阶振动频率逐渐增加,与此同时振动频率增加的绝对值逐渐减小。该结论与非局部硬化模型的结论是一致的,因为随着长度的增加,无量纲非局部效应因子减小,此时振动频率也随之减小,即频率随着非局部因子的增大而提高[43-44]
图5给出了不同层间剪切模量对振动频率的影响,图中横坐标φ1代表剪切模量增加的倍数。结果表明,随着剪切模量的增加,频率逐渐增大。
图6为层内拉伸刚度与频率的关系,图中横坐标φ2代表层内拉伸刚度增加的倍数。可以看出随着层内拉伸刚度的增加,频率几乎不发生改变。
图7为单层板弯曲刚度与频率的关系,图中横坐标φ3代表层内弯曲刚度增加的倍数。可以看出随着单层弯曲刚度的增加,频率逐渐增大。综上,层间剪切模量和单层弯曲刚度对横向振动频率的影响较大,而层内拉伸刚度的增加对横向振动频率几乎没有影响。
本文首先建立了考虑层内拉伸、层间剪切和单层弯曲的多层纳米板动力学模型。以二硫化钼为研究对象,并基于移动Kriging插值的无网格法计算了多层纳米板模型的振动频率,以及多层二硫化钼等效为单层Kirchhoff板和Mindlin板的振动频率。通过与分子动力学模拟的结果比较表明,建立的多层纳米板模型能够很好地预测多层二硫化钼的振动行为。这也说明多层二维结构层间剪切和滑移导致其违背了经典板理论的预测,主要归因于,二维结构之间的层间剪切影响了其整体动力学行为。随后分析了不同层数和尺寸对振动频率的影响,并通过改变层内拉伸刚度、层间剪切模量和单层弯曲刚度的大小来研究三者对振动频率的影响。研究表明,改变层内拉伸刚度几乎不改变多层纳米板的振动频率,而改变层间剪切模量和单层弯曲刚度对振动频率的影响较大。
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2025年第38卷第3期
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doi: 10.16385/j.cnki.issn.1004-4523.2025.03.019
  • 接收时间:2024-01-26
  • 首发时间:2026-02-11
  • 出版时间:2025-03-10
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  • 收稿日期:2024-01-26
  • 修回日期:2024-04-22
基金
国家杰出青年科学基金资助项目(11925205)
国家自然科学基金资助项目(51921003)
国家自然科学基金资助项目(U2341230)
作者信息
    1.中原工学院建筑工程学院,河南 郑州 450007
    2.南京航空航天大学航空航天结构力学及控制全国重点实验室,江苏 南京 210016

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王立峰(1977—),男,博士,教授。E-mail:
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https://castjournals.cast.org.cn/joweb/zdgcxb/CN/10.16385/j.cnki.issn.1004-4523.2025.03.019
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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