Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019)最新文献

Finite element analysis of piezoelectric cantilever beam using vibration for energy harvesting devices 能量收集装置用压电悬臂梁的振动有限元分析

Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019) Pub Date : 2021-02-25 DOI: 10.1063/5.0037801

Md. Naim Uddin, M. Islam, M. Riyad, M. S. Bhuyan

{"title":"Finite element analysis of piezoelectric cantilever beam using vibration for energy harvesting devices","authors":"Md. Naim Uddin, M. Islam, M. Riyad, M. S. Bhuyan","doi":"10.1063/5.0037801","DOIUrl":"https://doi.org/10.1063/5.0037801","url":null,"abstract":"This paper presents the design and analysis of a piezoelectric cantilever beam with tip mass under ambient mechanical vibration energy source. The ambient mechanical vibration energy generates stress and strain in the piezoelectric materials, which is converted into electrical energy by the principle of piezoelectric effect. The generated energy can be used for low power electronic devices. The geometry of the cantilever beam structure was designed by using SolidWorks. The structure consists of a bimorph piezoelectric layer, Aluminium substrate, and a tungsten proof mass. The cantilever beam was simulated using the Finite Element Method (FEM) in COMSOL Multiphysics. During FEM simulation, a vibration source of 1g acceleration was applied on the beam. As a result, the maximum displacement of the beam was obtained 2.4 µm at a resonant frequency of 192.25 Hz. Stress generation on the beam was analyzed because the piezoelectric energy harvesting from vibration depends on stress generation in piezoelectric materials. The maximum amount of stress was found 1.11×105 N/m2 at the clamped end of the beam during resonance. A voltage output of 4.4mV has been obtained from the harvester. The designed beam can be operated in low-frequency ambient vibration sources.","PeriodicalId":433621,"journal":{"name":"Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129232551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Application of computational fluid dynamics approach for modeling response of offshore pipeline and riser 计算流体力学方法在海洋管道及隔水管响应建模中的应用

Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019) Pub Date : 2021-02-25 DOI: 10.1063/5.0037890

B. Hawlader, S. Dutta, Anup Fouzder

引用次数: 0

GPU accelerated lattice Boltzmann simulation of non-Newtonian power-law fluid in a porous enclosure 非牛顿幂律流体在多孔外壳中的GPU加速晶格玻尔兹曼模拟

Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019) Pub Date : 2020-11-30 DOI: 10.1063/5.0037577

Mashnoon Islam, P. Nag, M. Molla

引用次数: 0

Atomistic modelling of functionally graded Cu-Ni alloy and its implication on the mechanical properties of nanowires 功能梯度Cu-Ni合金的原子模型及其对纳米线力学性能的影响

Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019) Pub Date : 2020-09-15 DOI: 10.1063/5.0037478

Md Shajedul Hoque Thakur, M. Islam, N. Monisha, Pritom Bose, Md. Adnan Mahathir Munshi, T. H. Pial

{"title":"Atomistic modelling of functionally graded Cu-Ni alloy and its implication on the mechanical properties of nanowires","authors":"Md Shajedul Hoque Thakur, M. Islam, N. Monisha, Pritom Bose, Md. Adnan Mahathir Munshi, T. H. Pial","doi":"10.1063/5.0037478","DOIUrl":"https://doi.org/10.1063/5.0037478","url":null,"abstract":"Functionally graded materials (FGM) eliminate the stress singularity in the interface between two different materials and therefore have a wide range of applications in high temperature environments such as engines, nuclear reactors, spacecrafts etc. Therefore, it is essential to study the mechanical properties of different FGM materials. This paper aims at establishing a method for modelling FGMs in molecular dynamics (MD) to get a better insight of their mechanical properties. In this study, the mechanical characteristics of Cu-Ni FGM nanowires (NW) under uniaxial loading have been investigated using the proposed method through MD simulations. In order to describe the inter-atomic forces and hence predict the properties properly, EAM (Embedded atom model) potential has been used. The nanowire is composed of an alloying constituent in the core and the other constituent graded functionally along the outward radial direction. Simple Linear and Exponential functions have been considered as the functions which defines the grading pattern. The alloying percentage on the surface has been varied from 0% to 50% for both Cu-cored and Ni-cored nanowires. All the simulations have been carried out at 300 K. The L/D ratios are 10.56 and 10.67 for Cu-cored and Ni-cored NWs, respectively. This study suggests that Ultimate Tensile Stress and Young's modulus increase with increasing surface Ni percentage in Cu-cored NWs. However, in Ni-cored NWs these values decrease with the increase of surface Cu percentage. Also, for the same surface percentage of Ni in Cu-cored NW, the values are higher in linearly graded FGMs than that in exponentially graded FGMs. While in Ni-cored NWs, exponentially graded FGM shows higher values of UTS and E than those in linearly graded FGM. Thus, grading functions and surface percentages can be used as parameters for modulating the mechanical properties of FGM nanowires.","PeriodicalId":433621,"journal":{"name":"Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132905973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Free convection flow with Joule heating, heat generation and viscous dissipation along a vertical wavy surface 自由对流的焦耳加热，热量的产生和粘滞耗散沿垂直波浪表面

Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019) Pub Date : 2018-07-01 DOI: 10.1063/5.0037584

MD. NURUL AMIN

{"title":"Free convection flow with Joule heating, heat generation and viscous dissipation along a vertical wavy surface","authors":"MD. NURUL AMIN","doi":"10.1063/5.0037584","DOIUrl":"https://doi.org/10.1063/5.0037584","url":null,"abstract":"The present numerical dissertation investigates a steady two-dimensional natural convection flow of viscous incompressible fluid considering viscous dissipation along a uniformly heated vertical wavy surface in presence of internal heat generation and Joule heating. Using the appropriate transformations the governing equations are transformed into non-dimensional boundary layer equations manually. After getting dimensionless differential equations manually, the equations are solved numerically by employing the implicit finite difference method together with Keller-box scheme with the help of coding software FORTRAN. Numerical results including the development of velocity profiles, the temperature profiles, the skin friction coefficient Cfx, the rate of heat transfer in terms of Nusselt number Nux, the streamlines as well as the isotherms are shown graphically and in a table form for comparison. The results illustrated that increasing values of heat generation, viscous dissipation and Joule heating parameters, increase the velocity, temperature, skin friction of fluid flow but decrease the rate of heat transfer.","PeriodicalId":433621,"journal":{"name":"Proceedings of the 13th International Conference on Mechanical Engineering (ICME2019)","volume":"290 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123439668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0