High currents occurring in transformers in transient state may cause the insulation materials to deteriorate. In this paper, the effects of the capacitance values between the winding and the core and between the windings on the transition of the lightning strike applied to the secondary side to the primary side of power transformers were analyzed. Transformer models were created in ANSYS@Maxwell-2D environment, which realizes a solution based on Finite Element Method (FEM). In simulation studies, a lightning impulse voltage of 1/100 µ s was applied to the secondary side of the transformer with a special method. It has been observed that the change of the values of the capacitances between the windings in power transformers affects the amplitude of the primary lightning impulse voltage. With this study, the weak points of the insulation materials of transformers windings were determined and the electric field distribution was analyzed.
{"title":"Analysis of the Effects of Capacitances on Transformers in Transient Regimes by Finite Element Method","authors":"Yildirim Özüpak","doi":"10.24107/IJEAS.840991","DOIUrl":"https://doi.org/10.24107/IJEAS.840991","url":null,"abstract":"High currents occurring in transformers in transient state may cause the insulation materials to deteriorate. In this paper, the effects of the capacitance values between the winding and the core and between the windings on the transition of the lightning strike applied to the secondary side to the primary side of power transformers were analyzed. Transformer models were created in ANSYS@Maxwell-2D environment, which realizes a solution based on Finite Element Method (FEM). In simulation studies, a lightning impulse voltage of 1/100 µ s was applied to the secondary side of the transformer with a special method. It has been observed that the change of the values of the capacitances between the windings in power transformers affects the amplitude of the primary lightning impulse voltage. With this study, the weak points of the insulation materials of transformers windings were determined and the electric field distribution was analyzed.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79452446","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}
Budiana Budiana, Abdullah Sani, Dani Pamungkas, M. Wahyudi, L. Siregar, S. K. Risandriya, K. Kamarudin, Nur Sakinah Asaad, Nadhrah Wivanius, Rizky Pratama Hudhajanto, Aditya Gautama Darmoyono, Rahmi Mahdaliza, A. B. K. Atmaja, A. Budiarto, Yulfiana Harini, Bayu Prayogo Setiawan, Indra Daulay, Dodi Radot Lumbantoruan
COVID-19 menyerang manusia pada akhir tahun 2019. Penyebaran COVID-19 terjadi melalui droplet/cairan yang keluar dari mulut/hidung manusia. Antisipasi penyebaran COVID-19 dilakukan dengan menerapkan pola hidup bersih dan sehat. Salah satu caranya adalah dengan mencuci tangan menggunakan hand sanitizer. Penggunaan hand sanitizer di tempat umum memungkinkan terjadinya kontak fisik antar pengguna sehingga diperlukan cara untuk mengurangi kontak fisik tersebut. Cara yang bisa diterapkan adalah dengan menggunakan hand sanitizer otomatis. Prinsip dari hand sanitizer otomatis ini adalah ketika tangan didekatkan dengan botol hand sanitizer maka secara otomatis cairan akan keluar dengan sendirinya ke telapak tangan. Berdasarkan hasil penelitian yang telah dilakukan, hand sanitizer telah berhasil dibuat dan dapat digunakan di Politeknik Negeri Batam.
{"title":"Pembuatan Alat Otomatis Hand Sanitizer sebagai Salah Satu Antisipasi Penyebaran COVID-19 di Politeknik Negeri Batam","authors":"Budiana Budiana, Abdullah Sani, Dani Pamungkas, M. Wahyudi, L. Siregar, S. K. Risandriya, K. Kamarudin, Nur Sakinah Asaad, Nadhrah Wivanius, Rizky Pratama Hudhajanto, Aditya Gautama Darmoyono, Rahmi Mahdaliza, A. B. K. Atmaja, A. Budiarto, Yulfiana Harini, Bayu Prayogo Setiawan, Indra Daulay, Dodi Radot Lumbantoruan","doi":"10.30871/JAEE.V4I2.2730","DOIUrl":"https://doi.org/10.30871/JAEE.V4I2.2730","url":null,"abstract":"COVID-19 menyerang manusia pada akhir tahun 2019. Penyebaran COVID-19 terjadi melalui droplet/cairan yang keluar dari mulut/hidung manusia. Antisipasi penyebaran COVID-19 dilakukan dengan menerapkan pola hidup bersih dan sehat. Salah satu caranya adalah dengan mencuci tangan menggunakan hand sanitizer. Penggunaan hand sanitizer di tempat umum memungkinkan terjadinya kontak fisik antar pengguna sehingga diperlukan cara untuk mengurangi kontak fisik tersebut. Cara yang bisa diterapkan adalah dengan menggunakan hand sanitizer otomatis. Prinsip dari hand sanitizer otomatis ini adalah ketika tangan didekatkan dengan botol hand sanitizer maka secara otomatis cairan akan keluar dengan sendirinya ke telapak tangan. Berdasarkan hasil penelitian yang telah dilakukan, hand sanitizer telah berhasil dibuat dan dapat digunakan di Politeknik Negeri Batam.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83107725","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}
Overall Equipment Effectiveness (OEE) adalah metode yang digunakan untuk menghitung nilai efektivitas dari sebuah mesin atau peralatan. Jika nilai OEE ≥ 85%, maka mesin dapat dikatakan efektif. Jika nilai OEE < 85%, maka mesin tidak efektif dan akan dilakukan analisis untuk mencari akar permasalahan, di antaranya menggunakan metode Failure Mode and Effect Analysis (FMEA). Penelitian ini bertujuan membuat sistem penghitung nilai efektivitas mesin forming menggunakan metode OEE. Limit switch dan Arduino UNO digunakan untuk mengambil data output dari mesin, seperti jumlah produksi, total durasi kerja mesin, dan total durasi mesin berhenti. Data diolah menggunakan Microsoft Visual Studio (C#) dan disimpan dalam database sehingga dapat ditampilkan dalam bentuk laporan bulanan menggunakan Crystal Report. Pengujian lapangan sistem ini dilaksanakan untuk menghitung OEE pada mesin die form. Berdasarkan hasil dari pengujian tersebut, sistem penghitung ini berfungsi dengan baik dalam menghitung OEE mesin die form tersebut, yang dalam hal ini berada dalam kisaran 59,05% s.d 97,17% (efektivitas di bawah nilai World class standard).
{"title":"Sistem Penghitung Nilai Efektivitas Mesin Forming Menggunakan Metode Overall Equipment Effectiveness","authors":"Vernando Vernando, Indra Hardian Mulyadi","doi":"10.30871/JAEE.V4I2.2702","DOIUrl":"https://doi.org/10.30871/JAEE.V4I2.2702","url":null,"abstract":"Overall Equipment Effectiveness (OEE) adalah metode yang digunakan untuk menghitung nilai efektivitas dari sebuah mesin atau peralatan. Jika nilai OEE ≥ 85%, maka mesin dapat dikatakan efektif. Jika nilai OEE < 85%, maka mesin tidak efektif dan akan dilakukan analisis untuk mencari akar permasalahan, di antaranya menggunakan metode Failure Mode and Effect Analysis (FMEA). Penelitian ini bertujuan membuat sistem penghitung nilai efektivitas mesin forming menggunakan metode OEE. Limit switch dan Arduino UNO digunakan untuk mengambil data output dari mesin, seperti jumlah produksi, total durasi kerja mesin, dan total durasi mesin berhenti. Data diolah menggunakan Microsoft Visual Studio (C#) dan disimpan dalam database sehingga dapat ditampilkan dalam bentuk laporan bulanan menggunakan Crystal Report. Pengujian lapangan sistem ini dilaksanakan untuk menghitung OEE pada mesin die form. Berdasarkan hasil dari pengujian tersebut, sistem penghitung ini berfungsi dengan baik dalam menghitung OEE mesin die form tersebut, yang dalam hal ini berada dalam kisaran 59,05% s.d 97,17% (efektivitas di bawah nilai World class standard).","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"14 35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87553153","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}
Buckling of axially loaded cantilever nanobeams with intermediate support have been studied in the current study. Higher order size dependent strain gradient theory has been utilized to capture the scale effect in nano dimension. Minimum total potential energy formulation has been used in modeling of nanobeam. Approximate Ritz method has been applied to the energy formulation for obtaining critical buckling loads. Position of the intermediate support has been varied and its effect on the critical buckling load has been investigated in the analysis. Mode shapes in critical buckling loads have been shown for various intermediate support positions. Present results could be useful in design of carbon nanotube resonators.
{"title":"Buckling Analysis of Intermediately Supported Nanobeams via Strain Gradient Elasticity Theory","authors":"M. Arda","doi":"10.24107/ijeas.842499","DOIUrl":"https://doi.org/10.24107/ijeas.842499","url":null,"abstract":"Buckling of axially loaded cantilever nanobeams with intermediate support have been studied in the current study. Higher order size dependent strain gradient theory has been utilized to capture the scale effect in nano dimension. Minimum total potential energy formulation has been used in modeling of nanobeam. Approximate Ritz method has been applied to the energy formulation for obtaining critical buckling loads. Position of the intermediate support has been varied and its effect on the critical buckling load has been investigated in the analysis. Mode shapes in critical buckling loads have been shown for various intermediate support positions. Present results could be useful in design of carbon nanotube resonators.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86770276","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}
In the paper, the size dependent buckling analysis of hybrid organic/inorganic nanobeam with I cross section is investigated. Eringen’s nonlocal elasticity theory is used to take the size effect into consideration. Comparative buckling loads of nanobeams for first ten modes is plotted in figure using Euler-Bernoulli theory and Eringen’s nonlocal elasticity theory. Two different size parameter is used. It is clearly demonstrated that the size effect can be neglected for first modes while it is unneglectable for higher modes. Simply supported case in investigated. The advantages of I-cross section are discussed.
{"title":"Size Dependent Buckling Analysis of Hybrid Organic/Inorganic Nano-Sized I-Beam","authors":"K. Mercan","doi":"10.24107/ijeas.836644","DOIUrl":"https://doi.org/10.24107/ijeas.836644","url":null,"abstract":"In the paper, the size dependent buckling analysis of hybrid organic/inorganic nanobeam with I cross section is investigated. Eringen’s nonlocal elasticity theory is used to take the size effect into consideration. Comparative buckling loads of nanobeams for first ten modes is plotted in figure using Euler-Bernoulli theory and Eringen’s nonlocal elasticity theory. Two different size parameter is used. It is clearly demonstrated that the size effect can be neglected for first modes while it is unneglectable for higher modes. Simply supported case in investigated. The advantages of I-cross section are discussed.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91348637","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}
In this study, rotating long thick-walled fiber reinforced composite cylinders with closed ends are investigated within the elastic limits by using analytical methods. Hoffman yield criteria is employed to the elastic problem to find limit angular velocities. Composite body of the cylinders are consisting of isotropic matrix and transversely isotropic fibers which are unidirectionally aligned in circumferential direction. Alterations on the elastic stress and displacement fields are examined by taking various fiber volume fraction and wall thickness values. Obtained results emphasized that both parameters highly influence the distributions of stress, displacement and commencement of the yielding.
{"title":"Elastic Stresses of Rotating Transversely Isotropic Fiber Reinforced Composite Cylinders","authors":"Ömer Can Farukoğlu, I. Korkut","doi":"10.24107/ijeas.801030","DOIUrl":"https://doi.org/10.24107/ijeas.801030","url":null,"abstract":"In this study, rotating long thick-walled fiber reinforced composite cylinders with closed ends are investigated within the elastic limits by using analytical methods. Hoffman yield criteria is employed to the elastic problem to find limit angular velocities. Composite body of the cylinders are consisting of isotropic matrix and transversely isotropic fibers which are unidirectionally aligned in circumferential direction. Alterations on the elastic stress and displacement fields are examined by taking various fiber volume fraction and wall thickness values. Obtained results emphasized that both parameters highly influence the distributions of stress, displacement and commencement of the yielding.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83635955","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}
Gözde Nur Nişanci, Yılmaz Güvercin, S. Ateş, H. Ölmez, E. U. Yaylacı, Murat Yaylacı
Dental implant applications for edentulous jaws are today considered a predictable, safe, and daily technique for giving patients new aesthetics and function. However, the success of the implant therapy should be thoroughly investigated for long-term clinical results about the stress distribution in hosting bone tissue and prosthetic components. In this study, the effect of different prosthesis designs on the stress distribution around the abutment and dental implant in bone tissue was investigated using the finite element method (FEM) with Workbench module of the ANSYS package program. The examination focuses on the effect of the number of implants in teeth layouts on the distribution of stresses, strains, and displacements. In the study the historical development of dental implant problems is mentioned, and some previous studies are summarized. Critical information is also given about biomechanics, dental implants, jawbone, teeth, and the finite element method. Totally four different cases, one layout with three implants and three layouts with two implants, were analyzed. Titanium was used as an implant and abutment material. Nobel Active implants and abutments manufactured by Nobel BioCare Company were used for complete toothless lower jaw case. The critical stress, strain, and displacement values were determined for all four different scenarios. As a result, it was concluded that stresses, strains, and displacements have lower values for the design of triple dental implants compared to other layouts.
{"title":"Investigation of The Effect of Different Prosthesis Designs and Numbers on Stress, Strain and Deformation Distribution","authors":"Gözde Nur Nişanci, Yılmaz Güvercin, S. Ateş, H. Ölmez, E. U. Yaylacı, Murat Yaylacı","doi":"10.24107/ijeas.816227","DOIUrl":"https://doi.org/10.24107/ijeas.816227","url":null,"abstract":"Dental implant applications for edentulous jaws are today considered a predictable, safe, and daily technique for giving patients new aesthetics and function. However, the success of the implant therapy should be thoroughly investigated for long-term clinical results about the stress distribution in hosting bone tissue and prosthetic components. In this study, the effect of different prosthesis designs on the stress distribution around the abutment and dental implant in bone tissue was investigated using the finite element method (FEM) with Workbench module of the ANSYS package program. The examination focuses on the effect of the number of implants in teeth layouts on the distribution of stresses, strains, and displacements. In the study the historical development of dental implant problems is mentioned, and some previous studies are summarized. Critical information is also given about biomechanics, dental implants, jawbone, teeth, and the finite element method. Totally four different cases, one layout with three implants and three layouts with two implants, were analyzed. Titanium was used as an implant and abutment material. Nobel Active implants and abutments manufactured by Nobel BioCare Company were used for complete toothless lower jaw case. The critical stress, strain, and displacement values were determined for all four different scenarios. As a result, it was concluded that stresses, strains, and displacements have lower values for the design of triple dental implants compared to other layouts.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72794163","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}
Zinc oxide nanowires (ZnO NWs) can be used in some NEMS applications due to their remarkable chemical, physical, mechanical and thermal resistance properties. In terms of the suitability of such NEMS organizations, a correct mechanical model and design of ZnO NWs should also be established under different effects. In this study, thermal vibration analyses of elastic beam models of ZnO NWs are examined based on Eringen's nonlocal elasticity theory. The resulting equation of motion is solved with a finite element formulation developed for the atomic size-effect and thermal environment. The vibration frequencies of ZnO NWs with different boundary conditions are calculated under nonlocal parameter and temperature change values and numerical results were discussed.
{"title":"Thermal vibration of Zinc Oxide nanowires by using nonlocal finite element method","authors":"Hayri Metin Numanoğlu","doi":"10.24107/ijeas.784042","DOIUrl":"https://doi.org/10.24107/ijeas.784042","url":null,"abstract":"Zinc oxide nanowires (ZnO NWs) can be used in some NEMS applications due to their remarkable chemical, physical, mechanical and thermal resistance properties. In terms of the suitability of such NEMS organizations, a correct mechanical model and design of ZnO NWs should also be established under different effects. In this study, thermal vibration analyses of elastic beam models of ZnO NWs are examined based on Eringen's nonlocal elasticity theory. The resulting equation of motion is solved with a finite element formulation developed for the atomic size-effect and thermal environment. The vibration frequencies of ZnO NWs with different boundary conditions are calculated under nonlocal parameter and temperature change values and numerical results were discussed.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83130887","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}
This paper presents static analysis of a simply supported beam made of fiber reinforced composite material resting on elastic foundation. The foundation type is considered as Winkler-Pasternak foundation type. The first-shear beam theory is used in the kinematics of the beam and the Ritz method is used and in the solution of the problem. In the Ritz method, algebraic polynomials are used with the trivial functions. In the numerical examples, the effects of fibre orientation angles, the volume fraction and foundation parameters on the static deflections of fiber reinforced composite beam are investigated. The numerical results show that fiber orientation angle, volume fraction and foundation parameter have great influence on static behavior of fiber reinforced composites.
{"title":"Static Analysis of a Fiber Reinforced Composite Beam Resting on Winkler-Pasternak Foundation","authors":"Ş. Akbaş","doi":"10.24107/ijeas.790858","DOIUrl":"https://doi.org/10.24107/ijeas.790858","url":null,"abstract":"This paper presents static analysis of a simply supported beam made of fiber reinforced composite material resting on elastic foundation. The foundation type is considered as Winkler-Pasternak foundation type. The first-shear beam theory is used in the kinematics of the beam and the Ritz method is used and in the solution of the problem. In the Ritz method, algebraic polynomials are used with the trivial functions. In the numerical examples, the effects of fibre orientation angles, the volume fraction and foundation parameters on the static deflections of fiber reinforced composite beam are investigated. The numerical results show that fiber orientation angle, volume fraction and foundation parameter have great influence on static behavior of fiber reinforced composites.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83247489","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}
In this study, a numerical approach has been introduced in the elastic stress solutions of hollow disks made of functionally graded materials (FGM) that are exposed to linearly increasing temperature dispersion. The modulus of elasticity and the coefficient of thermal expansion of the FGM disk is assumed to vary in radial direction in different forms, and it is further assumed that the Poisson’s ratio is constant. It causes the differential equation that manages the behaviour of the object under different material properties and boundary conditions to be a variable coefficient equation. Except for some simple grade materials and boundary conditions, it is hardly possible to produce an analytical solution of such equations. In this case, the solution of the problems can only be found with numerical approaches. Complementary Functions Method (CFM) was used to solve the problem. Different material models were used from the written works and corresponding radial, tangential and equivalent stresses and radial displacements were calculated. Simple, effective and well-structured solution steps can be easily implemented for disks.
{"title":"A Practical Jointed Approach to Thermal Stress Analysis of FGM Disc","authors":"Ayşegül Özgür, K. Aydın, I. Keles","doi":"10.24107/ijeas.809300","DOIUrl":"https://doi.org/10.24107/ijeas.809300","url":null,"abstract":"In this study, a numerical approach has been introduced in the elastic stress solutions of hollow disks made of functionally graded materials (FGM) that are exposed to linearly increasing temperature dispersion. The modulus of elasticity and the coefficient of thermal expansion of the FGM disk is assumed to vary in radial direction in different forms, and it is further assumed that the Poisson’s ratio is constant. It causes the differential equation that manages the behaviour of the object under different material properties and boundary conditions to be a variable coefficient equation. Except for some simple grade materials and boundary conditions, it is hardly possible to produce an analytical solution of such equations. In this case, the solution of the problems can only be found with numerical approaches. Complementary Functions Method (CFM) was used to solve the problem. Different material models were used from the written works and corresponding radial, tangential and equivalent stresses and radial displacements were calculated. Simple, effective and well-structured solution steps can be easily implemented for disks.","PeriodicalId":34399,"journal":{"name":"International Journal of Electrical Engineering and Applied Sciences","volume":"190 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79526150","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}
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