Mode Analysis and Study of Sunjiagou Aqueduct

2014 ◽  
Vol 912-914 ◽  
pp. 911-914
Author(s):  
Cai Ying Chen ◽  
Ke Lun Wei ◽  
Ya Fei Zhu
Keyword(s):  
Seismic Design ◽  
Vibration Frequency ◽  
Natural Vibration ◽  
Vibration Mode ◽  
Added Mass ◽  
Mode Analysis ◽  
Natural Vibration Frequency ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis

This paper mainly adopts the finite element analysis software ANSYS to calculate and analyze the dynamic characteristic of aqueduct structure,using added mass method to deal with interaction between water and aqueduct wall, and get the natural vibration frequency and main vibration mode of U-shaped aqueduct in different water depth. The calculation result shows that water has a small effect on the vibration mode of aqueduct structure, but has a greater influence on the natural vibration frequency of aqueduct structure; natural vibration frequency of aqueduct structure decreases with the depth deepening. The research results provide the basis for the seismic design and protection of Sunjiagou aqueduct.

Experimental Study of the Influence of Beam-Reduction and Rib-Addition Strengthening Method on Bridge Natural Vibration Properties

2012 ◽  
Vol 178-181 ◽  
pp. 2158-2163
Author(s):  
Guang Ning Pu
Keyword(s):  
Vibration Frequency ◽  
Natural Vibration ◽  
Vibration Mode ◽  
Natural Vibration Frequency ◽  
Vibration Properties ◽  
Before And After ◽  
Improvement Effect ◽  
Practical Effect ◽  
Experimental Values ◽  
Strengthening Method

In order to study the influence of beam-reduction and rib-addition strengthening method on the natural vibration properties of hollow slab bridges, based on bridge natural vibration frequency and the vibration mode in the first three orders as main comparison parameters, according to the comparison between the theoretical values as well as experimental values of the natural vibration properties before and after strengthening, the practical effect of this strengthening method is studied. The test data show that the beam-reduction and rib-addition strengthening method results in an obvious enhancement of the natural vibration frequency of simply supported hollow slab bridges, which proves that the strengthening method has remarkable improvement effect on the rigidity of bridges. It can be seen from the comparison of the changes of the vibration mode in the first three orders before and after strengthening that the transverse connection of bridge is strengthened and the integrity is prominently enhanced after strengthening. The study result is that the beam-reduction and rib-addition strengthening method can greatly enhance the structural behavior of hollow slab bridges.

Design and Research of a New Ultrasonic Atomizing Vibrator

2013 ◽  
Vol 328 ◽  
pp. 468-472
Author(s):  
Hua Li ◽  
Jiang Jiang Zhao ◽  
Zhen Yin ◽  
Kun Ren
Keyword(s):  
Finite Element Analysis ◽  
Steel Sheet ◽  
Vibration Mode ◽  
Simulation Analysis ◽  
Design Method ◽  
Analysis Software ◽  
Element Analysis ◽  
Vibration Displacement ◽  
The Finite Element Analysis ◽  
New Type

Based on the theory of ultrasonic vibration, a new type of ultrasonic atomizing vibrator (UAV) with a vibrating steel sheet was proposed. By using the finite element analysis software to simulation analysis and research for the new type of vibrator, the frequency and vibration mode of atomizing steel sheet was obtained and the prototype of vibrator was fabricated. The impedance and vibration displacement of the vibrator was tested and the experiment of the new type of vibrator was carried out, which verified the feasibility of the new type of vibrator design method.

Research on Seismic Performance of Large Span Integral Suspended Ceiling Structure in Decoration Engineering

2013 ◽  
Vol 639-640 ◽  
pp. 901-905
Author(s):  
You Jun Zhang ◽  
Zhong Ping Tang ◽  
De Lai Liu
Keyword(s):  
Seismic Performance ◽  
Vibration Frequency ◽  
Natural Vibration ◽  
Vibration Mode ◽  
Frequency Characteristics ◽  
Natural Vibration Frequency ◽  
Ansys Software ◽  
Large Span ◽  
Constructional Design

The natural vibration frequency, characteristics of vibration mode and deformation of large span integral ceiling structure in a hotel under earthquake were studied using the ANSYS Software, then some useful suggestions on hoisting position, pull rod and other factors were put forward for seismic constructional design of large span integral suspended ceiling structures.

Finite Element Analysis of Natural Vibration Frequency for Unbounded Prestressed Concrete Beams

2013 ◽  
Vol 351-352 ◽  
pp. 1034-1037
Author(s):  
Feng Ge Li ◽  
Yan Zhao
Keyword(s):  
Finite Element ◽  
Vibration Frequency ◽  
Prestressed Concrete ◽  
Natural Vibration ◽  
Concrete Beams ◽  
Variable Stiffness ◽  
Natural Vibration Frequency ◽  
Element Analysis ◽  
Finite Element Program ◽  
Element Program

An experimental investigation on the dynamic characteristics of unbounded prestressed concrete simply support beams is presented. A total of 5 unbounded prestressed concrete simply support beams were constructed and tested. The influence of prestressing on natural vibration frequency of concrete beams is studied by applying prestress gradually. A model of variable stiffness is proposed to calculate the natural vibration frequency of unbounded prestressed concrete beams. The finite element program Sap2000 is used to calculate the frequency of unbounded prestressed concrete beams. The results show that the calculating results agree well with experimental ones.

Research on Dynamic Characteristic of the Engine Cylinder Based on ANSYS and Pro/E

2011 ◽  
Vol 101-102 ◽  
pp. 640-643
Author(s):  
Zhen Bing Wang ◽  
Peng Fei ◽  
Guan Zhang Li
Keyword(s):  
Vibration Mode ◽  
Three Dimensional ◽  
Analysis Method ◽  
Dimensional Model ◽  
Connecting Rod ◽  
Analysis Software ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Engine Cylinder ◽  
The Finite Element Analysis

The connecting rod is an important part in the engine cylinder. This paper studied the engine cylinder by using Pro/E and ANSYS and achieved some interest results. It used the Pro/E to establish three-dimensional model of the engine and to simulate on it. It also analyzes the connecting rod of cylinder by using the finite element analysis software ANSYS, its modal analysis method was put forward and the low natural frequency and vibration mode were calculated. The analysis method and the results can provide reference for the dynamic design of the connecting rod, and also provide a method for the fault diagnosis engine system.

Modal Analysis of Vegetable Transplanter’s Mounting Headstock Based on ANSYS

2012 ◽  
Vol 550-553 ◽  
pp. 3049-3053
Author(s):  
Jun Ling Wang ◽  
Xin Xin Zhu ◽  
Zu Li Zhang ◽  
Yu Qiu Song
Keyword(s):  
Modal Analysis ◽  
Natural Vibration ◽  
Vibration Mode ◽  
Damping Ratio ◽  
Structure Design ◽  
Analysis Software ◽  
Element Analysis ◽  
External Interference ◽  
Transplanting Machine ◽  
Modal Vibration

Mounting headstock is an important part of the vegetable transplanting machine, its strength directly affects the machine's performance. The modal analysis of three types of headstocks while lifting and lowering implement were carried out with ANSYS finite element analysis software, the natural vibration characteristics including natural frequency, damping ratio and modal vibration mode of each particular mode without external interference were obtained, The comparison among the three structures was conducted and it may provide a theoretical basis for the structure design of the mounting headstock of vegetable transplanting machine .

Design Research of Steel Pipe Combination of Angle Steel Tower of XiYue 220kV Cross Section

2013 ◽  
Vol 470 ◽  
pp. 408-411 ◽  
Author(s):  
Yan Zhong Ju ◽  
Xiao Xu Fu ◽  
Neng Xian Zeng
Keyword(s):  
Finite Element Analysis ◽  
Cross Section ◽  
Design Research ◽  
Axial Stress ◽  
Steel Pipe ◽  
Stress Difference ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Angle Steel

Given the path situation of Xiyue substation 220kV four outlets project crossing Shunde waterway section,this article applies of Dao Heng tower full stress analysis software and the finite element analysis software ANSYS to two steel pipe combination of angle steel towers to carry on design research,contrast axial stress of two kinds of software,analyse the reasons of axial stress difference.

Research on the Piezoelectric Ultrasonic Actuator Applied to SFSS

2015 ◽  
Author(s):  
Y. J. Tang ◽  
Z. Yang ◽  
X. J. Wang ◽  
J. Wang
Keyword(s):  
Natural Vibration ◽  
Structural Parameters ◽  
Laser Vibrometer ◽  
Vibration Modes ◽  
Element Analysis ◽  
Linear Type ◽  
Frequency Sweep ◽  
The Finite Element Analysis ◽  
Frequency Sweep Test ◽  
Overall Performance

This paper presents an investigation of a novel linear-type piezoelectric ultrasonic actuator for application in a Smart Fuze Safety System (SFSS). Based on the requirements of SFSS, the structural parameters of the proposed piezoelectric ultrasonic actuator are determined by fuze arming mode. Moreover, sensitivity analysis of the structural parameters to the frequency consistency is conducted using FEM software, after which the optimal dimensions are obtained with two close natural vibration frequencies. To validate the results of FEM, the frequency sweep tests of the piezoelectric ultrasonic actuator are performed to determine the motor’s actual working mode frequencies with PSV-300-B Doppler laser vibrometer system. Furthermore, the results of frequency sweep test are compared with that of the finite element analysis, and further verified by impedance analyzer. To investigate the overall performance of the piezoelectric ultrasonic actuator, vibration modes of actuator’s stator, output speed and force of the piezoelectric ultrasonic actuator are tested. The experimental results show that the output speed and force of the actuator can reach 88.2 mm/s and 2.3N respectively, which means that piezoelectric ultrasonic actuator designed in this paper can meet the demands of the SFSS.

Study on the Influence of Reactor Core Structure on Reactor Natural Vibration Frequency

2021 ◽  
Author(s):  
Yuan Zhou ◽  
Tian Tian ◽  
Xiongfei Yu ◽  
Ran Ren ◽  
Liangcai Zhou ◽  
...  
Keyword(s):  
Vibration Frequency ◽  
Natural Vibration ◽  
Reactor Core ◽  
Core Structure ◽  
Natural Vibration Frequency
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