Finite Element Analysis on the Response of Local Sharp-Notched Circular Tubes under Cyclic Bending

2014 ◽  
Vol 626 ◽  
pp. 34-39
Author(s):  
Kuo Long Lee ◽  
Yun Wang ◽  
Wen Fung Pan
Keyword(s):  
Finite Element ◽  
Experimental Finding ◽  
Experimental Result ◽  
Notch Depth ◽  
Element Analysis ◽  
Cyclic Bending ◽  
Circular Tubes ◽  
Finite Element Software ◽  
Ansys Analysis ◽  
The Moment

In this study, the finite element software ANSYS was used to analyze the mechanical behavior of local sharp-notched circular tubes under cyclic bending. The local sharp-notched depths include: 0.2, 0.4, 0.6, 0.8 and 1.0 mm, and the local sharp-notched directions include: 0, 30, 60 and 90 degrees. According to the experimental result, the notch depth has no influence on the moment-curvature relationship. But the notch depth increases, the unsymmetrical phenomenon of the ovalization-curvature relationship becomes more obvious and the speed of ovalization accelerates. In addition, the ovalization-curvature relationship becomes symmetrical when the direction angle increases. The ANSYS analysis was compared with the experimental finding. Although some differences between the experimental and simulated results, but both trends were very similar.

Collapse of Sharp-Notched 6061-T6 Aluminum Alloy Tubes Under Cyclic Bending

2016 ◽  
Vol 16 (07) ◽  
pp. 1550035 ◽  
Author(s):  
Chen-Cheng Chung ◽  
Kuo-Long Lee ◽  
Wen-Fung Pan
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Cyclic Bending ◽  
Finite Element Software ◽  
Buckling Failure ◽  
Simulation Results ◽  
Number Of Cycles ◽  
The Moment ◽  
The Relationship ◽  
Good Agreement

The mechanical behavior and buckling failure of sharp-notched 6061-T6 aluminum alloy tubes with different notch depths subjected to cyclic bending are experimentally and theoretically investigated. The experimental moment–curvature relationship exhibits an almost steady loop from the beginning of the first cycle. However, the ovalization–curvature relationship exhibits a symmetrical, increasing, and ratcheting behavior as the number of cycles increases. The six groups of tubes tested have different notch depths, from which two different trends can be observed from the relationship between the controlled curvature and the number of cycles required to ignite buckling. Finite element software ANSYS is used to simulate the moment–curvature and ovalization–curvature relationships. Additionally, a theoretical model is proposed for simulation of the controlled curvature-number of cycles concerning the initiation of buckling. Simulation results are compared with experimental test data, which shows generally good agreement.

Effects of Notch Depth and Direction on Stability of Local Sharp-Notched Circular Tubes Subjected to Cyclic Bending

2018 ◽  
Vol 18 (07) ◽  
pp. 1850099 ◽  
Author(s):  
Kuo-Long Lee ◽  
Kao-Hua Chang ◽  
Wen-Fung Pan
Keyword(s):  
Analytical Data ◽  
Cyclic Hardening ◽  
Notch Depth ◽  
Steel Tubes ◽  
Element Analysis ◽  
Cyclic Bending ◽  
Tube Cross Section ◽  
Number Of Cycles ◽  
The Moment ◽  
The Relationship

Cyclic bending of tubes leads to progressive ovalization of the tube cross-section, and persistent cycling causes catastrophic buckling of the tube. This paper presents the response and stability of SUS304 stainless steel tubes with local sharp-notched depths of 0.2, 0.4, 0.6, 0.8, and 1.0[Formula: see text]mm and notch directions of 0[Formula: see text], 30[Formula: see text], 60[Formula: see text], and 90[Formula: see text] under cyclic bending. The experimental results reveal that the moment–curvature relationship first exhibits cyclic hardening and then a steady loop after a few cycles. Because the notches are small and localized, notch depth and direction show minimal influence on the moment–curvature relationship. In contrast, the ovalization–curvature relationship demonstrates an increasing and ratcheting pattern along with the bending cycle, whereas notch depth and direction show a strong influence on this relationship. Finite-element analysis via ANSYS is used to simulate the moment–curvature and ovalization–curvature relationships, and an empirical model is proposed to simulate the relationship between the controlled curvature and number of cycles required to ignite buckling. The experimental and analytical data agree well with each other.

The Experimental Study and Finite Element Analysis on Deflection of RC Two-Way Slabs Reinforced with CFRP

2011 ◽  
Vol 368-373 ◽  
pp. 2291-2294
Author(s):  
Wen Sheng Li ◽  
Xiao Wei Wang ◽  
Xiao Wu Deng
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Flexural Stiffness ◽  
Test Results ◽  
Element Analysis ◽  
Finite Element Software ◽  
Ansys Analysis

The rule of stiffness and deflection change of reinforced concrete two-way slabs strengthened by CFRP was discussed after test research. The results were analyzed with ANSYS finite element software and compared with test results, and the ANSYS finite element analysis results agreed well with test results. It shows that CFRP can improve the flexural stiffness of reinforced concrete two-way slabs and effectively restrain deflection deformation of them. So ANSYS analysis results can provide reference for the test and engineering.

Finite Element Analysis and Experimental Investigation of Drilling of Titanium Alloy (Ti6Al4V)

2015 ◽  
Vol 813-814 ◽  
pp. 342-346
Author(s):  
M. Senthilkumar ◽  
A. Prabukarthi ◽  
U.B.S. Prakash ◽  
V. Krishnaraj ◽  
K. Balaji
Keyword(s):  
Finite Element ◽  
Reference Point ◽  
Weight Ratio ◽  
Helix Angle ◽  
Machining Process ◽  
Experimental Result ◽  
Tool Geometry ◽  
Drilling Process ◽  
Element Analysis ◽  
Finite Element Software

Drilling is a widely used machining process for various components pertaining to industries such as aerospace, automobile etc. Ti6Al4V is very often used for high stressed components like aircraft structure because of its excellent strength to weight ratio. Tool geometry plays a vital role in effective drilling. It is very difficult to develop a modified geometry in order to achieve better hole quality and improved tool life and validating its outcome experimentally is very expensive. The current paper presents the concept of drilling simulation process using commercial finite element software, Abaqus/Explicit. Five major drill bit geometry such as point angle, helix angle, clearance diameter, and web thickness were varied The proposed simulation model for drilling process was based on Eulierian formulation with explicit interaction. The results of simulation were compared with that of experimental drilling. The simulated result has a good correlation with the experimental result. The change in reference point to chisel tip in the simulation yielded better results as compared to when the reference point is taken at top surface of the tool.

FLEXURAL STRENGTH OF SPECIAL REINFORCED LIGHTWEIGHT CONCRETE BEAM FOR INDUSTRIALISED BUILDING SYSTEM (IBS)

2015 ◽  
Vol 77 (1) ◽  
Author(s):  
Chun-Chieh Yip ◽  
Abdul Kadir Marsono ◽  
Jing-Ying Wong ◽  
Mugahed Y. H. Amran
Keyword(s):  
Finite Element ◽  
Flexural Strength ◽  
Concrete Beam ◽  
Lightweight Concrete ◽  
Von Mises Stress ◽  
Experimental Result ◽  
Lightweight Aggregate Concrete ◽  
Element Analysis ◽  
Finite Element Software ◽  
Building System

Special reinforced lightweight aggregate concrete (SRLWAC) beam is designed as beam component in Industrialised Building System (IBS). It is used to overcome the difficulties during the component installation due to the heavy lifting task. This paper presents the flexural strength and performance of SRLWAC beam under vertical static load. SRLWAC beam was set-up on two columns corbel and tested under monotonic vertical load. Five Linear Variable Displacement Transducers (LVDTs) were instrumented in the model to record displacement. The ultimate flexural capacity of the beam was obtained at the end of experiment where failure occurred. Performance of the beam was evaluated in load-displacement relationship of beam and mode of failure. SRLWAC beam was then modelled and simulated by nonlinear finite element software- Autodesk Simulation Mechanical. Result from finite element analysis was verified by experimental result. Maximum mid-span displacement, Von-Mises stress, concrete maximum principal stress, and yielding strength of reinforcement were discussed in this paper. The beam was behaved elastically up to 90 kN and deformed plastically until ultimate capacity of 250.1 kN in experimental test. The maximum mid span displacement for experimental and simulation were 15.21 mm and 15.36 mm respectively. The major failure of IBS SRLWAC beam was the splitting of the concrete and yielding of main reinforcements at overlay end. Ductility ratio of IBS SRLWAC beam was 14.2, which was higher than pre-stressed concrete beam.

The Influence of Diameter-to-Thickness Ratios on the Response and Collapse of Sharp-Notched Circular Tubes under Cyclic Bending

2012 ◽  
Vol 28 (3) ◽  
pp. 461-468 ◽  
Author(s):  
K.-L. Lee ◽  
C.-M. Hsu ◽  
W.-F. Pan
Keyword(s):  
Experimental Finding ◽  
Empirical Relationship ◽  
Cyclic Hardening ◽  
304 Stainless Steel ◽  
Cyclic Bending ◽  
Circular Tubes ◽  
Parallel Lines ◽  
Number Of Cycles ◽  
The Moment ◽  
Good Agreement

AbstractThis paper discusses an experimental investigation of the behavior of sharp-notched circular tubes subjected to cyclic bending. The sharp-notched circular tubes of 304 stainless steel with three different diameter-to-thickness ratios (Do / t) were tested under symmetric curvature-controlled cyclic bending. It has been shown that the moment-curvature curves exhibited the loops with cyclic hardening and gradually becoming steady after a few cycles for all tested tubes. The ovalization-curvature curves revealed unsymmetric, ratcheting and increasing behavior with the number of cycles. In addition, five almost parallel lines corresponding to five different notch depths for each Do / t ratio were found from the experimental relationship between the cyclic controlled curvature and the number of cycles necessary to produce buckling on a log-log scale. Finally, an empirical relationship was proposed so it could be used for simulating the aforementioned relationship. By comparing with the experimental finding, the derived empirical relationship was in good agreement with the experimental data.

Nonlinear Finite Element Analysis on Integral Forced Performance for Steel Tubular High Scaffold with Couplers

2011 ◽  
Vol 243-249 ◽  
pp. 1321-1325
Author(s):  
Xue Feng Cai ◽  
Jin Ping Zhuang ◽  
Ming Bei Tuo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Model ◽  
Buckling Analysis ◽  
Nonlinear Finite Element ◽  
Experimental Result ◽  
Element Analysis ◽  
Finite Element Software ◽  
Spring Element ◽  
Elastic Spring

The characteristics of integral forced prformance for seel tubular high scaffold with couplers were introduced and deficiencies were pointed out in the paper. Integral forced prformance for steel tubular high scaffold with couplers was simulated by finite element software ABAQUS. Couplers joint was simulated with nolinear elastic spring element model. Eigenvalue buckling analysis was used to get the most stability capacity. The simulated result agrees well with previous experimental result.

Finite Element Analysis of Main Stand of Ф140 Pipe Rolling Mill and Split Casting

2013 ◽  
Vol 690-693 ◽  
pp. 2327-2330
Author(s):  
Ming Bo Han ◽  
Li Fei Sun
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Rolling Mill ◽  
Analysis Model ◽  
Element Analysis ◽  
Pipe Rolling ◽  
Full Load ◽  
Finite Element Software ◽  
Theoretical Position ◽  
Technical Requirements

By using finite element software, the paper establishes the main stand analysis model of the Ф140 pipe rolling mill and provides the model analysis of main stand in cases of full load. Verify the design of main stand fully comply with the technical requirements .In this paper, it provides the theoretical position of split casting and welding method using electric slag welding.

Finite Element Analysis of Uniaxial Compression of Glazed Hollow Bead of Recycled Concrete Short Columns

2014 ◽  
Vol 898 ◽  
pp. 399-402
Author(s):  
Heng Sun ◽  
Bai Shou Li
Keyword(s):  
Finite Element ◽  
Uniaxial Compression ◽  
Recycled Concrete ◽  
Intensity Level ◽  
Concrete Wall ◽  
Element Analysis ◽  
Ordinary Concrete ◽  
Ansys Simulation ◽  
Finite Element Software ◽  
Short Columns

For traditional ordinary concrete wall column prone to thermal bridges, posted outside the insulation board short life than the life of the building，in the glazed hollow bead of recycled concrete foundation with good thermal conductivity test and compressive strength of the proposed ,use glazed hollow bead of recycled concrete exterior wall column instead of the traditional ordinary concrete wall column ,and using the finite element software ANSYS simulation analysis the uniaxial compression of glazed hollow bead of recycled concrete short columns and ordinary concrete short columns. Comparative analysis showed the same intensity level glazed hollow bead of recycled concrete ultimate compressive bearing capacity of an analog value the same as ordinary concrete short columns. To validate the ANSYS simulation of concrete short columns under uniaxial compression condition .

scholarly journals Simulation Analysis on Cymbal Transducer

2011 ◽  
Vol 2-3 ◽  
pp. 140-143
Author(s):  
Qing Feng Yang ◽  
Peng Wang ◽  
Yu Hong Wang ◽  
Kai Zhang
Keyword(s):  
Finite Element ◽  
Resonance Frequency ◽  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Free Field ◽  
Voltage Sensitivity ◽  
Element Analysis ◽  
Cavity Bottom ◽  
Finite Element Software ◽  
Cymbal Transducer

The resonance frequency of the cymbal transducer ranges from 2kHz to 40kHz and its effective electromechanical coupling factor is around 20%. Finite element analysis has been performed to ascertain how the transducer’s makeup affect the transducer’s performance parameters. Two-dimensional axisymmetric model of the cymbal transducer was founded by finite element software-ANSYS, the application of the element type was discussed and the FEM models were built up under the far field condition. Eight groups of cymbal transducers of resonance frequency around 3kHz with different structural dimensions were designed. It was better for choosing the cymbal transducer of the 8mm cavity coping diameter, 20.8mm cavity bottom diameter and 26.8mm piezoelectric ceramic wafer diameter than others for reducing distortion degree of the signal and improving communication turnover in the researched cymbal transducers. It was appropriate for choosing the cymbal transducer of the 8mm cavity coping diameter, 22.4mm cavity bottom diameter and 26.4mm piezoelectric ceramic wafer diameter in order to improve the free-field voltage sensitivity and transmission efficient.

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