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Effect of uncertainty in material properties on wave propagation characteristics of nanorod embedded in elastic medium
Lv Z(吕峥); Liu, Hu; Li Q(李琦)
作者部门空间自动化技术研究室
关键词Wave Propagation Nanorod Nonlocal Elasticity Theory Uncertain Material Properties Interval Analysis Method
发表期刊International Journal of Mechanics and Materials in Design
ISSN1569-1713
2018
卷号14期号:3页码:375-392
收录类别SCI ; EI
EI收录号20172803935254
WOS记录号WOS:000441298700005
产权排序2
资助机构National Nature Science Foundation of China
摘要

The effect of uncertainty in material properties on wave propagation characteristics of nanorod embedded in an elastic medium is investigated by developing a nonlocal nanorod model with uncertainties. Considering limited experimental data, uncertain-but-bounded variables are employed to quantify the uncertain material properties in this paper. According to the nonlocal elasticity theory, the governing equations are derived by applying the Hamilton’s principle. An iterative algorithm based interval analysis method is presented to evaluate the lower and upper bounds of the wave dispersion curves. Simultaneously, the presented method is verified by comparing with Monte-Carlo simulation. Furthermore, combined effects of material uncertainties and various parameters such as nonlocal scale, elastic medium and lateral inertia on wave dispersion characteristics of nanorod are studied in detail. Numerical results not only make further understanding of wave propagation characteristics of nanostructures with uncertain material properties, but also provide significant guidance for the reliability and robust design of the next generation of nanodevices.

语种英语
WOS类目Engineering, Civil ; Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
关键词[WOS]WALLED CARBON NANOTUBES ; NONLOCAL CONTINUUM-MECHANICS ; STRAIN GRADIENT THEORY ; COUPLE STRESS THEORY ; NONLINEAR VIBRATION ; YOUNGS MODULUS ; MOLECULAR-DYNAMICS ; FINITE-ELEMENT ; BEAM THEORY ; SMALL-SCALE
WOS研究方向Engineering ; Materials Science ; Mechanics
资助项目National Nature Science Foundation of China[11602283]
引用统计
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/20799
专题空间自动化技术研究室
通讯作者Liu, Hu
作者单位1.Institute of Solid Mechanics, Beihang University (BUAA), Beijing, 100191, China
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China
推荐引用方式
GB/T 7714
Lv Z,Liu, Hu,Li Q. Effect of uncertainty in material properties on wave propagation characteristics of nanorod embedded in elastic medium[J]. International Journal of Mechanics and Materials in Design,2018,14(3):375-392.
APA Lv Z,Liu, Hu,&Li Q.(2018).Effect of uncertainty in material properties on wave propagation characteristics of nanorod embedded in elastic medium.International Journal of Mechanics and Materials in Design,14(3),375-392.
MLA Lv Z,et al."Effect of uncertainty in material properties on wave propagation characteristics of nanorod embedded in elastic medium".International Journal of Mechanics and Materials in Design 14.3(2018):375-392.
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