scholarly journals AEROELASTIC ANALYSIS OF A FLAPPING BLOW FLY WING

2019 ◽  
pp. 10-18
Author(s):  
Can BEKER ◽  
Ali Emre TURGUT ◽  
Dilek Funda KURTULUŞ
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Dynamic Analysis ◽  
Interaction Analysis ◽  
Blow Fly ◽  
Analysis Model ◽  
Element Analysis ◽  
Structural Dynamic ◽  
Aeroelastic Analysis ◽  
Sinusoidal Input

In this study, 3D model of the bio-inspired blow fly wing Callphere Erytrocephala is created and aeroelastic analysis is performed to calculate its aerodynamical characateristic by use of numerical methods. In order to perform the flapping motion, a sinusoidal input function is created. The scope of this study is to perform aeroelastic analysis by syncronizing computational fluid dynamics (CFD) and structural dynamic analysis model and to investigate the unsteady lift formation on the aeroelastic flapping wing. Keywords: Micro air vehicle, Fluid-structure interaction analysis, Computational Fluid Dynamics, Structural dynamic analysis, Finite element analysis

scholarly journals Aeroelastic Analysis of a Flapping Blow Fly Wing

2020 ◽  
Vol vm01 (is01) ◽  
pp. 14-21
Author(s):  
Can Beker ◽  
Ali Emre Turgut ◽  
Kutluk Bilge Arikan ◽  
Dilek Funda Kurtulus
Keyword(s):  
Fluid Dynamics ◽  
3D Model ◽  
Input Function ◽  
Flapping Wing ◽  
Blow Fly ◽  
Structural Dynamic ◽  
Aeroelastic Analysis ◽  
Sinusoidal Input ◽  
Computational Fluid Dynamics Cfd ◽  
Analysis Models

In this study, a 3D model of the bio-inspired blowfly wing Callphere Erytrocephala is created and aeroelastic analysis is performed to calculate its aerodynamical characteristics by use of numerical methods. To perform the flapping motion, a sinusoidal input function is created. The scope of this study is to perform aeroelastic analysis by synchronizing computational fluid dynamics (CFD) and structural dynamic analysis models and to investigate the unsteady lift formation on the aeroelastic flapping wing for different angles of attack.

Calculation and Analysis of Dynamic Load’s Cushioning of the Fixed Pile-Leg in Marine Structure

2010 ◽  
Author(s):  
Qi Yang ◽  
Jing Tang
Keyword(s):  
Elastic Modulus ◽  
Dynamic Analysis ◽  
Analysis Model ◽  
Analysis Software ◽  
Element Analysis ◽  
Structural Dynamic ◽  
Marine Structure ◽  
The Finite Element Analysis ◽  
Calculation Results ◽  
Load Impact

In this paper, we establish a mechanical model of the structural dynamic analysis for the legs of fixed pile leg marine structures, where the hull doesn’t float out of the water. We make a calculation and analysis of the dynamic model by using the finite element analysis software “ABAQUS”. Also the cushioning mechanism of different materials is analyzed. Accordingly we establish a dynamic analysis model of a cushioning system. An elastic modulus linear model is used to simulate rubber materials, in order to carry out a qualitative analysis of the cushioning effect of a cushioning device in a reinforcing area. Taking rubber materials’ different elastic modulus and different load impact frequencies as variables, a series of calculation results and analysis are presented. Through a comparative analysis of the different structural dynamic response between the buffered and the non-buffered, we draw the conclusion that the dynamic load of the legs has been effectively alleviated with a cushioning device which is helpful in leg-protection.

Experiences From Structural Dynamic Analysis Projects of BWR Plants Within the Scope of Power Uprate Projects Using FEA

2010 ◽  
Author(s):  
Bjo¨rn Sva¨rd ◽  
Jan-Anders Larsson ◽  
Philip Ma˚rtensson ◽  
Bjo¨rn Lundin
Keyword(s):  
Finite Element Analysis ◽  
Dynamic Analysis ◽  
Structural Models ◽  
Dynamic Interactions ◽  
Element Analysis ◽  
Structural Dynamic ◽  
Global Models ◽  
Dynamic Verification ◽  
Strong Dynamic ◽  
Reactor Pressure

During recent years, power-uprate projects have been executed at several BWR-units in Sweden. As part of these projects, structural verification of the safety-related buildings as well as the new and old internal parts of the reactor pressure vessel, RPV, has been performed. In this document, some experiences will be presented from structural dynamic verification, using finite element analysis, FEA, within the scope of these power uprate projects. From this work, a number of conclusions can be drawn. Global models with dense meshes can successfully be used for a broad range of applications. Today, large FEA-models can be used efficiently, e.g. in global vibration and structural verification analyses, if suitable dynamic analysis methods are used. There can be strong dynamic interactions between the containment, fluids, the RPV and RPV-internals. Stress calculation and evaluation can be executed efficiently on large models. The structural models can with advantage be re-utilized in future projects.

scholarly journals Analisis Kekuatan Ball Valve Akibat Tekanan Fluida Menggunakan Finite Element Analysis

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Meri Rahmi ◽  
Delffika Canra ◽  
Suliono Suliono
Keyword(s):  
Fluid Dynamics ◽  
Finite Element Analysis ◽  
Computational Fluid Dynamics ◽  
Finite Element ◽  
Safety Factor ◽  
Ball Valve ◽  
Element Analysis ◽  
Computational Fluid Dynamics Cfd

Valve (katup) sebagai salah satu produk industri, sangat dibutuhkan oleh perusahaan yang bergerak mengontrol aliran cairan untuk efisiensi. Kebutuhan tentang ini banyak digunakan oleh perusahaan makanan, obat-obatan, minuman, pembangkit listrik dan industri minyak dan gas. Tujuan penggunaan valve adalah untuk membatasi dan mengontrol cairan pada kondisi tekanan tinggi. Salah satu katup yang sering digunakan adalah ball valve, yaitu katup dengan tipe gerak memutar. Adanya permintaan ball valve ini, dibutuhkan produk dengan spesifikasi tertentu memiliki rancangan dengan tingkat kekuatan yang baik. Dengan kata lain, produk valve (katup) yang baik, harus memiliki kekuatan yang baik, aman dan sesuai dengan kebutuhan dilakukan pengujian. Penelitian ini bertujuan untuk melakukan analisis terhadap ball valve 4 inch ANSI 300 untuk memastikan katup yang diproduksi sesuai spesifikasi, kuat dan tahan terhadap tekanan fluida. Metode yang digunakan adalah Finite Element Analysis (FEA) dengan software Solidworks. Analisis dilakukan pada ball valve 4 inch ANSI 300 dengan keadaan full open, hall open dan full closed serta dengan pembebanan 725 psi dan 1087.5 psi hasil dari Computational Fluid Dynamics (CFD). Analisis dilakukan pada temperatur -29.50C, 250C dan 4250C. Berdasarkan hasil analisis dengan FEA, dinyatakan bahwa ball valve 4 inch ANSI 300 kuat dan aman untuk digunakan. Nilai faktor keamanan (safety factor), signifikan lebih tinggi dari nilai safety factor minimum yang diizinkan.

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