The Finite Element Analysis of Tower Crane Safety Performance

2013 ◽  
Vol 405-408 ◽  
pp. 1135-1138
Author(s):  
Chi Chen ◽  
Tian Lu ◽  
Hao Yuan Chen ◽  
Li Cheng Tian
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Balance ◽  
Internal Force ◽  
Normal Operation ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Tower Crane ◽  
The Finite Element Analysis ◽  
Basic Parameters

Taking QTZ630 tower crane as the research object, this thesis will use parameter language APDL of finite element analysis software ANSYS direct modeling. Then set the basic parameters of the material, mesh, and finally conduct static analysis. Combining the actual situation, the normal operation of tower cranes in three different conditions of deformation and internal force is analyzed, the results show that three conditions of the maximum displacement and stress values to meet the design requirements specification and there is still a material balance itself.

Linear Static Response of Suspension Arm Based on Artificial Neural Network Technique

2011 ◽  
Vol 213 ◽  
pp. 419-426
Author(s):  
M.M. Rahman ◽  
Hemin M. Mohyaldeen ◽  
M.M. Noor ◽  
K. Kadirgama ◽  
Rosli A. Bakar
Keyword(s):  
Neural Network ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Network Model ◽  
Neural Network Model ◽  
Mesh Size ◽  
Maximum Displacement ◽  
Element Analysis ◽  
The Neural Network ◽  
The Finite Element Analysis

Modeling and simulation are indispensable when dealing with complex engineering systems. This study deals with intelligent techniques modeling for linear response of suspension arm. The finite element analysis and Radial Basis Function Neural Network (RBFNN) technique is used to predict the response of suspension arm. The linear static analysis was performed utilizing the finite element analysis code. The neural network model has 3 inputs representing the load, mesh size and material while 4 output representing the maximum displacement, maximum Principal stress, von Mises and Tresca. Finally, regression analysis between finite element results and values predicted by the neural network model was made. It can be seen that the RBFNN proposed approach was found to be highly effective with least error in identification of stress-displacement of suspension arm. Simulated results show that RBF can be very successively used for reduction of the effort and time required to predict the stress-displacement response of suspension arm as FE methods usually deal with only a single problem for each run.

Design of a New Piezo-Electric Micro-Gripper Based on Flexible Magnifying Mechanism

2012 ◽  
Vol 201-202 ◽  
pp. 907-911 ◽  
Author(s):  
Feng Yi Feng ◽  
Yu Guo Cui ◽  
Fei Xue ◽  
Liang En Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Response Analysis ◽  
Analysis Software ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Micro Gripper ◽  
The Finite Element Analysis ◽  
Harmonic Response Analysis ◽  
Finger Tip

Based on the requirements of that the finger can move in parallel, and the displacement of the finger can be detected, the micro-gripper driven by piezoelectric actuator is designed based on the displacement amplification structure with the flexure hinge. The static analysis, the modal analysis, the harmonic response analysis and the transient response analysis of the micro-gripper are carried out by using the finite element analysis software ANSYS. The results of the finite element analysis show that the finger is fully able to move in parallel, and can detect the displacement of the finger; the maximum displacement of the finger is about 101 μm, the first natural frequency is about 130 Hz; the finger tip displacement under the 1 μm step input is about 20 μm, the fingertip vibration is about ±2 μm.

scholarly journals Finite Element Analysis for Whole Machine of Link-Type Ladle Turret

2011 ◽  
Vol 2-3 ◽  
pp. 861-864
Author(s):  
Ling Ling Li ◽  
Guang Pu Xu ◽  
Bing Bing Cui
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Molten Steel ◽  
Mechanical Analysis ◽  
Maximum Displacement ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Capacity Calculation ◽  
Dip Angle

The mechanism withstands 220t high temperature molten steel. In case of damage, molten steel pours. There will be major security incidents. Therefore, it is necessary to calculate carrying capacity of the mechanism. However, the part of components of the mechanism is made up of a crisscross of steel plate. This is used to withstand the bending and stretching. If we rely on traditional mechanical analysis, a large number of simplifying must be adopted, and accuracy of the calculation can be reduced. Therefore, this paper uses the COSMOSWorks Plug-in of SolidWorks software to carry out finite element calculation of whole machine for the mechanism. It avoids these shortcomings mentioned above. And this makes bearing capacity calculation to be more close to the actual circumstances. And the results show that: (1) the maximum stress of parts in the mechanism is only 52.8Mpa and much less than permissible stresses of its materials. As a result, the mechanism has sufficient bearing capacity. (2) The maximum displacement of whole machine is 2.637 mm. And the displacement will cause dip angle when lifting molten steel and it is less than its allowable stiffness. Therefore, the deformation is to meet requirements for the mechanism. In conclusion, the finite element analysis of the whole machine avoids complex force analysis and simplification of structure. The calculation has high accuracy. It is one of effective methods in the design of intensity and stiffness of complex structures.

Finite Element Analysis of Composite-Concrete Adhesion

2002 ◽  
Author(s):  
Eyassu Woldesenbet ◽  
Haftay Hailu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Load Transfer ◽  
Composite Plates ◽  
Alternative Methods ◽  
Normal Operation ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
The Cost

The need for the rehabilitation of bridges and structures is becoming more apparent as the number of deficient civil structure grows and the cost of replacement is becoming prohibitive. These leads to the search of alternative methods, such as rehabilitation, to put the deteriorated structures back to normal operation with the least possible cost. One such method is the use of composite plates adhesively bonded to concrete as reinforcement and to prevent the propagation of crack within the concrete structure. In this study the load transfer and the resulting stress distribution in the composite-concrete adhesion system is investigated using the finite element method. The effects of the different bond parameters are studied using the finite element. In addition, results of the finite element analysis are proved to be in agreement with the analytical solution of shear stress distribution in the adhesion layer that was developed in previous studies by the authors.

Theoretical and Finite Element Analysis on Connecting Rod of Quintuple Cylinders Fracturing Pump

2013 ◽  
Vol 744 ◽  
pp. 190-193
Author(s):  
Xiu Hua Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Small Deformation ◽  
Element Model ◽  
Connecting Rod ◽  
Maximum Displacement ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Structure Strength ◽  
Load Handling

According to the plunger pump movement principle, this paper analyzed the two kind of typical force situation of the connecting rod, and obtained the theoretical maximum value of the force. The finite element analysis method was applied to analyze the structure strength of the connecting rod. The finite element model of the connecting rod was established, and the load handling and boundary condition was analyzed. The maximum stress 405MPa occurs at the transition from the small end to the link body. The average stress of the link body is 136MPa. The maximum displacement is 0.17mm, belongs to the small deformation range. The last results of the node stress and displacement show that the connecting rod can work safely.

Whole-Process Analysis of the Mechanical Responses of High Formwork Support Systems during Concrete Pouring

2013 ◽  
Vol 368-370 ◽  
pp. 1583-1590
Author(s):  
Chang Ming Hu ◽  
Yan Guo ◽  
Jie Wang ◽  
Qiong Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Force ◽  
Support System ◽  
Mechanical Response ◽  
Process Analysis ◽  
Internal Force ◽  
Element Analysis ◽  
Whole Process ◽  
The Finite Element Analysis

An underground club in Xian is taken as the research object to explore the mechanical response of the internal poles of its high formwork support system during concrete pouring. The internal force static measurement of the high formwork support system is carried out. Each stage of the concrete pouring is simulated by the finite element analysis software ANSYS in the form of load step, whose results are contrasted with the measured results. The contrast reveals that the concrete pouring sequence has direct influence on the tendency of poles axial force and on the location of maximum axial force and that it is reasonable to adopt imaginary horizontal force which simulates the initial defects to carry out the overall stability analysis of the high formwork support system. It is pointed out that the program of setting up the formwork and the concrete pouring sequence should be determined with the finite element analysis.

A Method for Determining the Value of m Based on PLAXIS Nonlinear Finite Element Analysis

2011 ◽  
Vol 250-253 ◽  
pp. 1483-1488
Author(s):  
Jin Song Gui ◽  
Zhen Guo Li ◽  
Qing Meng ◽  
Bo Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bending Moment ◽  
Nonlinear Finite Element Analysis ◽  
Internal Force ◽  
Nonlinear Finite Element ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Finite Element Software ◽  
Selection Of

The value selection of m has a greater influence on the internal force of pile. So, how to determine the value of m is very important for the “m” method. In this paper, a geotechnical finite element software PLAXIS is used for the nonlinear finite element analysis of elastic long pile under the horizontal force action. By using the calculated maximum bending moment and the maximum displacement at the ground, and combined with the related formula for “m” method given in 《Code for Pile Foundation of Harbour Engineering》, a more accurate value of m can be obtained conveniently. Because this method is simple and practical, it can provide a useful reference for the project designer to determine a reasonable value of m.

Test and Finite Element Analysis of Concrete Continuous Beams Strengthened with CFRP Sheets

2010 ◽  
Vol 163-167 ◽  
pp. 998-1004 ◽  
Author(s):  
Dong Hui Cheng ◽  
Ya Min Yi ◽  
Tian Feng Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Test Data ◽  
Internal Force ◽  
Plastic State ◽  
Element Analysis ◽  
Cfrp Sheets ◽  
Continuous Beams ◽  
The Finite Element Analysis ◽  
Control Section

In order to study the mechanical behavior on concrete continuous beams strengthened with CFRP sheets, three two-span continuous beams strengthened with CFRP sheets in the control section at each span were fabricated and tested with two-point loading type. The test data such as load, crack distribution and deformation were obtained in different stages. Based on the test data, the finite element analysis on the continuous beams strengthened with CFRP sheets was carried out by ANSYS software. The variation of steel stress and deflection of control section in the intermediate support and the bearing capacity in different stages were obtained, moreover, the results show that the ultimate strength of continuous beams strengthened with CFRP sheets has not improved largely in elastic state while increased significantly in plastic state, and the continuous beams displayed obviously internal force redistribution.

Large-Tonnage Double Rotary Railway Crane Rotating Platform Finite Element Analysis and Optimization Design

2013 ◽  
Vol 385-386 ◽  
pp. 73-76
Author(s):  
Yang Di ◽  
Zhong Peng Zhang ◽  
Shi Lin Shen ◽  
Bao Le Wen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Parametric Modeling ◽  
Normal Operation ◽  
Analysis Software ◽  
Rotating Platform ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
First Time

Rotating platform is one of the railway cranes key components, for the installation of crane jib, lifting mechanism, luffing mechanism and rotating mechanism. In order to guarantee the normal operation of the crane, the rotating platform should have enough stiffness and strength. Based on the finite element analysis software WORKBENCH, this paper takes a kind of 160t double rotary rescue railway crane as the research background, and completed the parametric modeling and structure analysis of the rotating platform including the flexible counterweight for the first time. Thus avoiding the errors brought by the equivalent weight before. And on this basis, through the finite element analysis software ANSYS, the thickness of various parts of the rotating platform was optimized. As a result, the weight of the rotary table has a significant reduction. This will provide a new method for the design of railway crane in the future.

The Stress Distortion Analysis of Coiler Mandrel Based on Pro/E-MECHANICAL

2011 ◽  
Vol 80-81 ◽  
pp. 975-979
Author(s):  
Yun Cai Zhao ◽  
Fang Ping Hu ◽  
De Lang Guo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Maximum Stress ◽  
External Diameter ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Steel Rolling ◽  
Distortion Analysis ◽  
The Finite Element Analysis ◽  
The Relationship

Basing on material mechaanics and the finte element method,the interrelated analysis modules of Pro/E-MECHANICAL is used to analysis the stress and distortion of the coiler mandrel,getting the weakness of the coiler mandrel and getting the location of the maximum stress and the relationship between steel rolling external diameter and stress distortion, Obtaining the maximum stress is 82.8 Ma,the maximum displacement is 0.56 mm and getting the main reason for coiler mandrel published.Basing on the finite element analysis to improve its structure, to make its service life prolong greatly.

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