Modal Analysis of the Hydraulic Retarder Shell

2011 ◽  
Vol 418-420 ◽  
pp. 2195-2199
Author(s):  
Xu Fei Zhao ◽  
Chang You Li ◽  
Xiao Wen Li ◽  
Feng Ying Xu ◽  
Zhi Wei Mai ◽  
...  
Keyword(s):  
Modal Analysis ◽  
Vibration Suppression ◽  
Resonance Phenomenon ◽  
Fea Model ◽  
Suppression Technique ◽  
Modeling Software ◽  
Vibration Mechanism ◽  
Hydraulic Retarder ◽  
Vibration Forms ◽  
Ansys Workbench

The 3D model of THB40 hydraulic retarder shell was established which was based on the Pro/E modeling software. The model was simplified and was introduced to ANSYS Workbench as FEA model by ANSYS-Pro/E data interface. The constraints were imposed on the FEA model for the preceding six modal analysis. The former 6 order natural frequencies and the biggest resonance deformation is obtained to determine whether there are some vibration forms which have unfavorable effects on the vehicle and to avoid resonance phenomenon to appear. At the same time, it provides the reference for the further research of the vibration mechanism of the structure and the vibration suppression technique for practical application.

Statics and Modal Analysis for Large Vibrating Screen

2013 ◽  
Vol 380-384 ◽  
pp. 136-139 ◽  
Author(s):  
Wen Feng He ◽  
A Man Xian
Keyword(s):  
Modal Analysis ◽  
3D Modeling ◽  
3D Model ◽  
Mode Shapes ◽  
Stress And Strain ◽  
Element Analysis ◽  
Modeling Software ◽  
Stress And Strain Distribution ◽  
Vibration Shaker ◽  
Ansys Workbench

The 3D modeling software of Solidworks was used in the paper for the 3D modeling of large banana vibration shaker. And then the 3D model was imported into Ansys Workbench for finite element analysis. The overall stress and strain distribution of the shaker could be got under static loading. Secondly, the analysis of the dynamic characteristics of the entire shaker should be done, and the modal frequencies and mode shapes could be got through the analysis of the modal analysis results. Finally, the hammering test was done to verify the theoretical analysis. And it also provided a necessary theoretical basis for the design and improvement of the entire shaker.

Modal Analysis of a Vertically Tapered Frame

2017 ◽  
Vol 17 (03) ◽  
pp. 1771001
Author(s):  
M. L. Chandravanshi ◽  
A. K. Mukhopadhyay
Keyword(s):  
Modal Analysis ◽  
Force Transducer ◽  
Modal Parameters ◽  
Response Functions ◽  
Element Analysis ◽  
Fea Model ◽  
The Finite Element Analysis ◽  
Convergence Study ◽  
Probable Failure ◽  
Ansys Workbench

The paper delineates the procedure to assess probable failure sections through the dynamic conditions of a vertically tapered frame using the experimental modal analysis (EMA), which is validated through the finite element analysis (FEA). The modal parameters are experimentally determined by the frequency response functions (FRFs) using the accelerometer, force transducer, electro-dynamic shaker, dynamic signal analyzer (DSA) and post processed by the ME’Scope software. The ANSYS Workbench 14 was used for finding the modal parameters through the FEA. The FEA model was also tested by convergence study. The boundary conditions of the vertically tapered frame in the FEA is kept similar to the EMA. The values obtained by the two methods have been compared for their proximity.

scholarly journals Examination of Savonius VAWT Blade Made of Stainless Steel and Aluminum using Ansys

2020 ◽  
Vol 9 (3) ◽  
pp. 1370-1377
Keyword(s):  
Stainless Steel ◽  
Wind Turbine ◽  
Modal Analysis ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Modeling Software ◽  
Solid Works ◽  
The Cost ◽  
Aluminum Material ◽  
Ansys Workbench

This paper studies roof mounted savonius type Vertical Axis Wind Turbine systems with the goal of maximizing the efficiency and reducing the cost. The efficiency of the wind turbine depends on the material, shape and angle of the blade. So material plays an important role in the design of wind turbine. In this paper, Stainless Steel and Aluminum material are used to design savonius wind blades of 1 m height and 0.5 m chord length with 4 different arc radii. Modeling software Solid Works is used to model savonius wind blade and static structural and modal analysis of the Stainless Steel and Aluminum blades are done by using ANSYS Workbench software

Analysis of the Stress Intensity of Rotor Blade in Hydraulic Retarder

2011 ◽  
Vol 179-180 ◽  
pp. 1453-1458
Author(s):  
Jun Yan
Keyword(s):  
Stress Intensity ◽  
Coordinate Transformation ◽  
Rotor Blade ◽  
Distribution Functions ◽  
Rotor Blades ◽  
Fea Model ◽  
Numeric Simulation ◽  
Braking Torque ◽  
Flow Pressure ◽  
Hydraulic Retarder

Based on CFD numeric simulation for hydraulic retarder under full-filled condition, the pressure distribution functions of the rotor blades surfaces are approached by coordinate transformation and surface fitting. Through the APDL program, loads which involved not only centrifugal force but also flow pressure are loaded on the FEA model according to the approximating pressure functions. The FEA model is solved and the blades strength is analyzed more accurately. Noted moment and speed, that is respectively 4000 N • m and 1343rpm, is determined under the promise of blade strength, and controlling strategy is made that constant braking torque shoud be carried out when speed is higher than noted value .

scholarly journals Modal analysis of an iced offshore composite wind turbine blade

2021 ◽  
pp. 0309524X2110116
Author(s):  
Oumnia Lagdani ◽  
Mostapha Tarfaoui ◽  
Mourad Nachtane ◽  
Mourad Trihi ◽  
Houda Laaouidi
Keyword(s):  
Wind Turbine ◽  
Modal Analysis ◽  
Turbine Blade ◽  
Natural Frequencies ◽  
Wind Turbine Blade ◽  
Resonance Phenomenon ◽  
Mode Shapes ◽  
The Finite Element Method ◽  
Numerical Work ◽  
Composite Blades

In the far north, low temperatures and atmospheric icing are a major danger for the safe operation of wind turbines. It can cause several problems in fatigue loads, the balance of the rotor and aerodynamics. With the aim of improving the rigidity of the wind turbine blade, composite materials are currently being used. A numerical work aims to evaluate the effect of ice on composite blades and to determine the most adequate material under icing conditions. Different ice thicknesses are considered in the lower part of the blade. In this paper, modal analysis is performed to obtain the natural frequencies and corresponding mode shapes of the structure. This analysis is elaborated using the finite element method (FEM) computer program through ABAQUS software. The results have laid that the natural frequencies of the blade varied according to the material and thickness of ice and that there is no resonance phenomenon.

INVESTIGATION OF NATURAL FREQUENCIES OF COMPLEX WATER PIPELINES

Akustika ◽  
2021 ◽  
pp. 2-7
Author(s):  
Antonina Sekacheva ◽  
Alexander Noskov ◽  
Lilia Pastukhova
Keyword(s):  
Modal Analysis ◽  
Natural Frequencies ◽  
Residential Buildings ◽  
Geometrical Parameters ◽  
Analysis Method ◽  
Noise And Vibration ◽  
Software Packages ◽  
Resonant Modes ◽  
Water Pipelines ◽  
Ansys Workbench

The article deals with the problem of emergence of noise and vibration from pipelines of multi-storey residential buildings. The determination method of risk of increased noise and vibration using the modal analysis method in the ANSYS Workbench software packages is offered. The numerical modal analysis of straight pipeline sections with various geometrical parameters is carried out. Risk predictions of possible resonant modes are made. The maximum allowed span lengths between supports for sections of pipeline systems with a diameter of 15, 20, 25, 32, 40, 48, 60, 70, 102, 114, 140, 168, 180, 219 mm are offered.

Optimization Design of DVG850 Worktable System Based on ANSYS Workbench

2012 ◽  
Vol 184-185 ◽  
pp. 356-359
Author(s):  
Jiang Miao Yi ◽  
Dong Qiang Gao ◽  
Fei Zhang ◽  
Huan Lin
Keyword(s):  
Modal Analysis ◽  
Natural Frequency ◽  
High Speed ◽  
Optimization Design ◽  
Element Model ◽  
Single Screw ◽  
Machining Center ◽  
The Finite Element Model ◽  
Better Than ◽  
Ansys Workbench

The finite element model of worktable system is created and modal analysis is made with ANSYS Workbench by taking DVG850 high-speed vertical machining center worktable system for example. We make modal analysis of single-screw strength general reinforcement worktable system and get the natural frequency and the vibration mode.Then in order to improve the system's natural frequency, the scheme of dual-screw worktable system is put forward. Also natural frequency and vibration mode is got. Finally, it is proved that the performance of dual-screw worktable system is significantly better than the single-screw one. This provides a reliable reference for further study on dynamic analysis of worktable system.

scholarly journals Analytical evaluation of the lifetime of a three-axle bogie frame using the analytical model validated through experimental modal analysis

2018 ◽  
Vol 211 ◽  
pp. 06004
Author(s):  
Manea Ion ◽  
Sebesan Ioan ◽  
Matache Mihai ◽  
Prenta Gabriel ◽  
Firicel Catalin
Keyword(s):  
Fatigue Strength ◽  
Modal Analysis ◽  
Analytical Model ◽  
Fatigue Tests ◽  
Experimental Modal Analysis ◽  
Bogie Frame ◽  
Fea Model ◽  
Modal Model ◽  
Long Time ◽  
Data Files

The fatigue strength validation by tests of the railway bogie frames requires existence of an expensive laboratory and a long time for testing, of about 6 to 10 months. Considering these aspects, the european norms admit that fatigue tests can be replaced by finite elementes analysis, with condition that analytical model to be correctly realized and validated by tests. Experimental modal analysis provides a powerful tool for validation of the FEA model through experimental data. The article presents an application for analytical assessment of the fatigue strength for a three-axle locomotive bogie frame, before sending it to the laboratory fatigue tests. Using Ansys, it was carried out the structural analysis of the bogie frame, rezulting the modal model characterized by the modal parameters: eigenfrequencies and eigenshapes. The analytical model was validated through an EMA application carried out on the bogie frame and correlation analysis of the EMA and FEA models. The analytical model and data files containing the simulated vertical, transverse and twist loads, applied to the bogie frame according to EN13749/2011, constitutes the input data for nCode program, that evaluates the bogie frame lifetime using appropriate stress curves and a recognized hypothesis of damage accumulation.

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