Modal Analysis of the Boom System of Truck-Mounted Concrete Pump

2011 ◽  
Vol 403-408 ◽  
pp. 3620-3625
Author(s):  
Xin Xiang Zhou ◽  
Chang Lu Xu ◽  
Nan Nan Ren ◽  
Shu Jun Guo ◽  
Rong Liang Tian
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Mode Shapes ◽  
Element Analysis ◽  
High Effect ◽  
The Finite Element Analysis ◽  
Solid Works ◽  
Concrete Pump

This In this paper, we study the boom of truck-mounted concrete pump, we determine that the four booms extending horizontally is the most dangerous working conditions. This paper bases on Pump arm boom functional and structural characteristics, strength, stiffness, stability. By Finite element method, the dynamic characteristics of arm pump is analysed. we use Solid Works to design three-dimensional entity. and, in the finite element analysis of Solid Works plug-in Cosmos Work environment we finish the theoretical modal analysis. We get its top ten natural frequencies and mode shapes, and analyze the results .This method is designed for high effect and quality Pump arm boom ,providing precise reliable data.

FEM Analysis of a Diesel Engine’s Cylinder Head

2012 ◽  
Vol 490-495 ◽  
pp. 3023-3026
Author(s):  
Shao Zhong Jiang
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Cylinder Head ◽  
High Speed ◽  
Structural Characteristics ◽  
Fem Analysis ◽  
Mode Shapes ◽  
Element Analysis ◽  
Frequency Distributions ◽  
And Control

The article aims at the cylinder head used in a high speed and higher-power diesel engine. In order to obtain the vibration characteristics and vibration frequency distributions. By means of modal analysis technology and finite element method (FEM), structural characteristics of the cylinder head using modal analysis is investigated. Firstly, a physical model of the cylinder head is built. Through the comparison of all the modal analysis results with different meshing densities, a tetrahedron ten-node element with length of 30mm is selected. Then finite element analysis of the model is taken by FEM software. The cylinder head’s modal parameters namely its natural frequency are calculated and its mode shapes are identified. The results can provide basis for the engine’s dynamic analysis and control of the diesel engine’s noise

Modal Analysis of the Gantry Milling and Boring Machine Tool Beam Based on FEM

2012 ◽  
Vol 151 ◽  
pp. 424-428
Author(s):  
Zhong Liang Cao ◽  
Yan Ding ◽  
Qing Ming Hu ◽  
Qiang Guo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Modal Analysis ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Relative Deformation ◽  
Milling Machine ◽  
Element Analysis ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling

Fixed beam gantry for large CNC boring and milling machine to bear the beams on the rail side apron, and other parts ram weight under weight and size of deformation produced a result of the assembly accuracy of less than standard, use three-dimensional modeling software UG and finite element analysis software ANSYS for dynamic beam gantry milling machine CNC beam three-dimensional modeling and modal analysis, based on weight and apron beams, the weight of ram and other components in relative deformation amplitude, and the gantry milling machine processing characteristics and overall design of the structural characteristics of machine tools, assembly of the beam is proposed to note some issues and some ways to solve the assembly size requirements, through finite element analysis of the deformation and comparing the actual measured value, the experiment proved data on-site assembly solution with a good theoretical support.

Spindle Optimization Design of the Rice Mill Based on ANSYS Workbench

2014 ◽  
Vol 644-650 ◽  
pp. 807-812
Author(s):  
Yan Hua Shi ◽  
Guo Quan Zhang ◽  
Ning Zhang ◽  
Fan Wang ◽  
Zhi Ping Huang
Keyword(s):  
Finite Element ◽  
Optimization Design ◽  
Three Dimensional ◽  
Mode Shapes ◽  
Analysis Model ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Important Field ◽  
Domestic Design ◽  
Ansys Workbench

During the rice mill structural design process, static analysis is an extremely important field, not only decide to what the structure size is, but also for the subsequent fatigue analysis, providing the basis for the overall stability analysis. Now the traditional domestic design mainly based on the empirical design, which is resulted in Performance indicators lag behind of the rice mill, focusing on the performance of vibration is too large and the structure is irrational. Therefore, optimizing the structure of the rice mill to improve the vibration situation has important significance. Using SolidWorks software to build the three-dimensional solid model of the spindle, and then import the model into ANSYS Workbench to establish the finite element analysis model, through the finite element and modal analysis of the results obtained the stress and strain distribution of the natural frequencies and mode shapes characteristic, providing an important basis for further design optimization of the rice mill structure.

Strength and Finite Element Analysis of the Boom System of Truck-Mounted Concrete Pump

2011 ◽  
Vol 295-297 ◽  
pp. 2079-2082 ◽  
Author(s):  
Xin Xiang Zhou ◽  
Yu Cui ◽  
Nan Nan Ren ◽  
Yan Ling Tang ◽  
Shu Jun Guo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Analysis ◽  
Working Conditions ◽  
Three Dimensional ◽  
Operating Mode ◽  
Element Analysis ◽  
Solid Works ◽  
Concrete Pump ◽  
A Company

This paper takes the boom of truck-mounted concrete pump from a company as the study subject. After analyzing its working station, it can be found that the fourth boom is in the most dangerous working conditions when extending horizontally. Select this operating mode, carry on the stress analysis and three dimensional entity modeling with the project software Solid Works to it, then realize the boom's statics finite element analysis with Solid Works plug-in unit Cosmos Works.

scholarly journals Modal analysis of central impression cylinder based on fluid–solid coupling method

2020 ◽  
pp. 146134842091841
Author(s):  
HP Hou ◽  
TT Rui ◽  
R Deng ◽  
ZF Xu ◽  
SH Liu
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Cooling Water ◽  
Element Model ◽  
Coupling Method ◽  
Mode Shapes ◽  
Element Analysis ◽  
Finite Element Software ◽  
The Finite Element Analysis ◽  
Circulating Cooling Water

As a key component of satellite flexographic printing equipment, the vibration characteristics of the central impression cylinder have an important effect on the product quality. In order to improve dynamic characteristic of the central impression cylinder, the modal analysis on the central impression cylinder is carried out in combination with finite element software in this paper. Then, the modal properties are systematically compared between the central impression cylinder with circulating cooling water and without. The results show that the natural frequency of the central impression cylinder is greatly reduced based on the fluid–solid coupling method. Simultaneously, the natural frequencies and mode shapes of the central impression cylinder based on the finite element analysis are verified by an experimental test. The simulation results are in good agreement with the experimental results, indicating the effectiveness of the finite element model and experimental method used in this study.

Modal Analysis of Boring and Milling Machine

2011 ◽  
Vol 105-107 ◽  
pp. 204-207
Author(s):  
Jian Dong Shang ◽  
Jun Qi Guo ◽  
Dong Fang Hu
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Great Influence ◽  
Element Model ◽  
Mode Shapes ◽  
Machining Accuracy ◽  
Element Analysis ◽  
Modes Of Processing

The vibration is a high-precision machine tool components in the design of the major issues, facing its precision has a great influence, so column parts of its modal analysis is necessary. Creating three-dimensional finite element model of the column, using finite element analysis software ANSYS modal analysis of the column, which can reached the first five natural frequencies and mode shapes. Column Part of our understanding of dynamic performance and improve the machining accuracy is helpful. Modal analysis method is the dynamic performance of the column on the main approach, which mainly is to determine the vibration characteristics of the column that is the natural frequency and vibration mode, which we can determine the modes of processing accuracy, and thus the relevant parts of the machine column can be optimized so that it meet the requirements.

Modal Analysis of Concrete Pump Truck Boom

2014 ◽  
Vol 889-890 ◽  
pp. 148-151 ◽  
Author(s):  
Kun Li Mao
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Natural Frequencies ◽  
Hydraulic Cylinder ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Concrete Pumping ◽  
Pumping Mode ◽  
Concrete Pump Truck ◽  
Concrete Pump

Boom is one of key components of concrete pump trucks which can be looked as a projecting beam when unfolded at pumping mode. Under different concrete pumping modes, vibration of boom is serious for the hydraulic cylinder switching over shock, which can lead to the early damage of boom structure. In the finite element analysis software, boom of 37 meters concrete pump truck is simulated for its modal. Natural frequencies and corresponding modes are got and analyzed. To reduce vibration of concrete pump trucks, advices are presented by finite element modal analysis.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

Modeling and experimental verification on directivity of an electret cell array loudspeaker

2012 ◽  
Vol 24 (3) ◽  
pp. 326-333 ◽  
Author(s):  
Yu-Chi Chen ◽  
Wen-Ching Ko ◽  
Han-Lung Chen ◽  
Hsu-Ching Liao ◽  
Wen-Jong Wu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Digital Control System ◽  
Analysis Model ◽  
Cell Array ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
The Finite Element Analysis ◽  
Directivity Characteristics

We propose a model to give us a method to investigate the characteristic three-dimensional directivity in an arbitrarily configured flexible electret-based loudspeaker. In recent years, novel electret loudspeakers have attracted much interest due to their being lightweight, paper thin, and possessing excellent mid- to high-frequency responses. Increasing or decreasing the directivity of an electret loudspeaker makes it excellent for adoption to many applications, especially for directing sound to a particular area or specific audio location. Herein, we detail a novel electret loudspeaker that possesses various directivities and is based on various structures of spacers instead of having to use multichannel amplifiers and a complicated digital control system. In order to study the directivity of an electret loudspeaker based on an array structure which can be adopted for various applications, the horizontal and vertical polar directivity characteristics as a function of frequency were simulated by a finite-element analysis model. To validate the finite-element analysis model, the beam pattern of the electret loudspeaker was measured in an anechoic room. Both the simulated and experimental results are detailed in this article to validate the various assertions related to the directivity of electret cell-based smart speakers.

scholarly journals Evaluation of the Effects of the Chincup Appliance on the Craniofacial Structures by the Finite Element Analysis

2017 ◽  
Vol 7 ◽  
pp. 219-223
Author(s):  
Beril Demir Karamanli ◽  
Hülya Kılıçoğlu ◽  
Armagan Fatih Karamanli
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Fe Model ◽  
Analysis Method ◽  
Class Iii ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Clinical Changes

Aims The aim of this study is to evaluate the effects of the chincup appliance used in the treatment of Class III malocclusions, not only on the mandible or temporomandibular joint (TMJ) but also on all the craniofacial structures. Materials and Methods Chincup simulation was performed on a three-dimensional finite element (FE) model. 1000 g (500 g per side) force was applied in the direction of chin-condyle head. Nonlinear FE analysis was used as the numerical analysis method. Results By the application of chincup, stresses were distributed not only on TMJ or mandible but also on the circummaxillary sutures and other craniofacial structures. Conclusions Clinical changes obtained by chincup treatment in Class III malocclusions are not limited by only mandible. It was seen that also further structures were affected.

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