Modal Analysis, Computational Fluid Dynamics and Harmonic Response Analysis of a 3D Printed X-ray Film Handler for Assistant Robotic System using Finite Element Method

2020 ◽  
Author(s):  
Jayson P. Rogelio ◽  
Leif Oliver B. Coronado ◽  
Elmer P. Dadios ◽  
Argel A. Bandala ◽  
Ryan Rhay P. Vicerra ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Finite Element Method ◽  
Computational Fluid Dynamics ◽  
Finite Element ◽  
Modal Analysis ◽  
Response Analysis ◽  
X Ray ◽  
Harmonic Response ◽  
3D Printed ◽  
Harmonic Response Analysis

The Harmonic Response Analysis of Engine Block Based on Modal Analysis

2011 ◽  
Vol 138-139 ◽  
pp. 246-251 ◽  
Author(s):  
Zhong Cai Zheng ◽  
Yan Gao ◽  
Na Liu ◽  
Kun Jin Zhang ◽  
Hai Ou Chen ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Modal Analysis ◽  
Engine Block ◽  
Mode Shapes ◽  
Response Analysis ◽  
Frequency Curve ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
Block Based ◽  
Typical Mode

The modal analysis of the engine block is carried out using finite element method. Through the analysis, the inherent frequencies and mode shapes of the first 6 order modes are obtained respectively. Then the harmonic response analysis of the engine block is carried out based on the modal analysis, and the corresponding inherent frequencies of the weak positions of block under the action of external cycle force are obtained. Finally, the consistency of the typical mode shape and amplitude-frequency curve is compared.

Harmonic Response Analysis of Photovoltaic Module Using Finite Element Method

2021 ◽  
pp. 1219-1226
Author(s):  
Chaitanya V. Bhore ◽  
Atul B. Andhare ◽  
Pramod M. Padole ◽  
Chinmay R. Chavan ◽  
Vishal S. Gawande ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Photovoltaic Module ◽  
Response Analysis ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
Element Method

Structural Analysis of Agricultural Truck Frame Based on the Finite Element Method

2010 ◽  
Vol 37-38 ◽  
pp. 1236-1239
Author(s):  
Yun Wang ◽  
Bin Lin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Modification ◽  
Response Analysis ◽  
The Finite Element Method ◽  
Transient Dynamic Analysis ◽  
Frame Design ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
External Incentives

Frame is an important truck part to connect and support engine, transmission, carriage and cab etc. It is important to analyze strength, stiffness and dynamic characteristics for frame design. This paper developed static analysis of a specific agricultural truck frame under two conditions of full load bending and reverse. The corresponding suggestions of structural modification were proposed. Then the dynamic response of truck frame caused by the external incentives was studied, namely harmonic response analysis and transient dynamic analysis. The paper not only analyzed whether the truck frame met the strength requirements, but also proposed the corresponding solutions for the possible cases of fatigue fracture and stress overloaded of the frame.

Finite Element Analysis of Machine Tool Bed

2011 ◽  
Vol 337 ◽  
pp. 713-716
Author(s):  
Lei Sun ◽  
Ming Hai Wang ◽  
Xiao Peng Li ◽  
Yue Sun
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Response Analysis ◽  
Optimized Design ◽  
Element Analysis ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
Vibration Modal

Taking machine tool bed as example,the modal analysis and harmonic response analysis were done by means of finite element method. Find out its characteristics of vibration modal. The analysis is conducive to the design of the machine tool bed. It makes a base for optimized design and remanufacturing.

scholarly journals A Novel Ultrasonic Cleaning Tank Developed by Harmonic Response Analysis and Computational Fluid Dynamics

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 335
Author(s):  
Worapol Tangsopa ◽  
Jatuporn Thongsri
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Acoustic Pressure ◽  
Circulation System ◽  
Response Analysis ◽  
Cleaning Process ◽  
Ultrasonic Cleaning ◽  
Harmonic Response ◽  
Water Circulation System ◽  
Harmonic Response Analysis

The manufacturer of an ultrasonic cleaning tank (UCT) received advise from a customer to seek the cause to why the UCT could not clean their products effectively and develop a novel UCT to replace the conventional model. This UCT had a capacity of 10 L, a frequency of 28 kHz, four horn transducers, and a total power of 200 W. To resolve that problem and respond to customers’ needs, we presented new methods to develop the UCT using the harmonic response analysis (HRA) and computational fluid dynamics (CFD) to simulate the cleaning process which occurred within the UCT based on the actual conditions. Results from the HRA showed that the acoustic pressure in a problematic UCT was low, resulting in a smaller cleaning area, which was consistent with the results from the foil corrosion test, and thus caused the cleaning process to be ineffective. We developed a novel UCT with improved effectiveness by adjusting the design and adding a water circulation system. From the HRA, we were able to design the dimensions of the UTC and position of the transducer to be suitable to increase the acoustic pressure and cleaning area. CFD results enabled us to design proper inlet and outlet shapes, as well as simulate the water flow behavior to find the optimal cleaning condition so the novel UCT had a water circulation system that could eliminate the excess particles.

scholarly journals Design optimization of vehicle asynchronous motors based on fractional harmonic response analysis

2021 ◽  
Vol 12 (1) ◽  
pp. 689-700
Author(s):  
Ao Lei ◽  
Chuan-Xue Song ◽  
Yu-Long Lei ◽  
Yao Fu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Natural Frequency ◽  
Asynchronous Motor ◽  
Element Model ◽  
Design Parameters ◽  
Response Analysis ◽  
Harmonic Response ◽  
First Order ◽  
Harmonic Response Analysis

Abstract. To make vehicles more reliable and efficient, many researchers have tried to improve the rotor performance. Although certain achievements have been made, the previous finite element model did not reflect the historical process of the motor rotor well, and the rigidity and mass in rotor optimization are less discussed together. This paper firstly introduces fractional order into a finite element model to conduct the harmonic response analysis. Then, we propose an optimal design framework of a rotor. In the framework, objective functions of rigidity and mass are defined, and the relationship between high rigidity and the first-order frequency is discussed. In order to find the optimal values, an accelerated optimization method based on response surface (ARSO) is proposed to find the suitable design parameters of rigidity and mass. Because the higher rigidity can be transformed into the first-order natural frequency by objective function, this paper analyzes the first-order frequency and mass of a motor rotor in the experiment. The results proved that not only is the fractional model effective, but also the ARSO can optimize the rotor structure. The first-order natural frequency of asynchronous motor rotor is increased by 11.2 %, and the mass is reduced by 13.8 %, which can realize high stiffness and light mass of asynchronous motor rotors.

An Assignment Procedure from Particles to Mesh that Preserves Field Values

2019 ◽  
Vol 17 (02) ◽  
pp. 1850130 ◽  
Author(s):  
Daniel Duque ◽  
Pep Español
Keyword(s):  
Fluid Dynamics ◽  
Finite Element Method ◽  
Computational Fluid Dynamics ◽  
Finite Element ◽  
Velocity Field ◽  
Cfd Simulation ◽  
Vortex Sheet ◽  
The Finite Element Method ◽  
Particle In Cell ◽  
Field Information

In computational fluid dynamics there have been many attempts to combine the advantages of having a fixed mesh, on which to carry out spatial calculations, with using particles moving according to the velocity field. These ideas in fact go back to particle-in-cell methods, proposed about 60 years ago. Of course, some procedure is needed to transfer field information between particles and mesh. There are many possible choices for this “assignment”, or “projection”. Several requirements may guide this choice. Two well-known ones are conservativity and stability, which apply to volume integrals of the fields. An additional one is here considered: preservation of information. This means that assignment from the particles onto the mesh and back should yield the same field values when the particles and the mesh coincide in position. The resulting method is termed “mass” assignment, due to its strong similarities with the finite element method. Several procedures are tested, including the well-known FLIP, on three scenarios: simple 1D convection, 2D convection of Zalesak’s disk, and a CFD simulation of the Taylor–Green periodic vortex sheet. Mass assignment is seen to be clearly superior to other methods.

Dynamic Analysis of Key Parts of CNC Milling Machine Based on FEM

2012 ◽  
Vol 605-607 ◽  
pp. 1515-1518
Author(s):  
Wei Cong ◽  
Zhi Yong Zhang ◽  
Jiang Li ◽  
En Xiang Han
Keyword(s):  
Finite Element Method ◽  
Machine Tool ◽  
Response Analysis ◽  
Optimized Design ◽  
Milling Machine ◽  
Cnc Milling ◽  
Harmonic Response ◽  
Cnc Milling Machine ◽  
Harmonic Response Analysis ◽  
Vibration Modal

Taking the spindle of machine tool as example,the modal analysis and harmonic response analysis were done by means of finite element method. Find out its characteristics of vibration modal. The analysis is conducive to the design of the spindle of machine tool. It makes a base for optimized design and remanufacturing.

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