Study on Simulation Experiment with Universal Pass Rolling Deformation for Heavy Rail

2012 ◽  
Vol 430-432 ◽  
pp. 525-529 ◽  
Author(s):  
Lin Chen ◽  
Ke Xin Bi
Keyword(s):  
Finite Element ◽  
Pressure Coefficient ◽  
Small Deformation ◽  
Dimensional Accuracy ◽  
Research Unit ◽  
Finite Element Software ◽  
Universal Mill ◽  
The Difference ◽  
Rolling Deformation ◽  
Heavy Rail

Using the finite element software ANSYS/LS-DYNA for the universal rolling machine to simulate,research unit of the universal rolling deformation etc, and the use of universal mill for heavy rail rolling to simulate of lead samples, study of both. By comparing experimental results, the results show rolling simulation of laboratory lead samples and finite element simulations of computer are basically the same, use the universal pass, the difference of pressure coefficient for the rail head and rail base and rail back that work on the workpiece at the universal pass is small, deformation of workpiece is uniformity, it ensure the dimensional accuracy of the finished rail on the rail section.

Effects of Continuous Rolling Speed Change Rates on Geometric Dimension between Two Racks when Rolling Rail by Universal Pass

2012 ◽  
Vol 538-541 ◽  
pp. 2941-2944
Author(s):  
Yu Yan Liu ◽  
Yang Wang ◽  
Hu Zhu ◽  
Lin Chen
Keyword(s):  
Geometric Dimension ◽  
Dimensional Accuracy ◽  
Continuous Rolling ◽  
Distribution Law ◽  
Finite Element Software ◽  
Universal Mill ◽  
Speed Change ◽  
Rolling Deformation ◽  
The Relationship ◽  
Heavy Rail

This paper used the finite element software to simulate the process of the heavy rail rolling deformation between the UR and ER racks. It studied on the stress distribution law of the universal mill pass, the relationship between the universal mill unbalanced rates of velocity and tension changes of the rack, effect of the universal mill unbalanced rates of velocity on the change of the rolling geometric dimensions caused by the unbalanced rates of velocity. The research can guide the adjustment of the dimensional accuracy of the rail’s universal rolling.

Thermal Stresses Simulation Analysis of Concrete Box Water Bridge under the Solar Radiation

2011 ◽  
Vol 255-260 ◽  
pp. 952-956
Author(s):  
Jian Ping Sun ◽  
Jian Ping Chen ◽  
Gang Li
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Solar Radiation ◽  
Thermal Stresses ◽  
Simulation Analysis ◽  
Water Bridge ◽  
Finite Element Software ◽  
Steel Bar ◽  
Calculation Results ◽  
The Difference

The reasons why the producing of the difference in temperature distributing and thermal stresses of box aqueduct under solar radiation are analyzed. The difference in temperature distributing and thermal stresses are effectively simulated by the finite element software ANSYS.The calculation results indicate that concrete box aqueduct body inter-surface whatever along the longitudinal and transverse will produce considerable thermal stresses under solar radiation, and its value has exceeded the design of concrete tensile strength. Therefore, the thermal stresses under the solar radiation must be considered in the design of box aqueduct body structural. We should appropriately configure temperature reinforcing steel bar.

Finite Element Analysis and Design of a Horizontal Tank on Saddle Supports

2002 ◽  
Author(s):  
Afewerki H. Birhane ◽  
Yogeshwar Hari
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Code Design ◽  
Element Analysis ◽  
Analysis And Design ◽  
Finite Element Software ◽  
Asme Code ◽  
Design Function ◽  
Horizontal Tank ◽  
The Difference

The objective of this paper is to design and analyze a horizontal tank on saddle supports. The horizontal vessel is to store various chemicals used in today’s industry. The over all dimensions of the horizontal vessel are determined from the capacity of the stored chemicals. These dimensions are first determined. The design function is performed using the ASME Code Sec VIII Div 1. The horizontal tank design is broken up into (a) shell design, (b) two elliptical heads and (c) two saddle supports. The designed dimensions are used to recalculate the stresses for the horizontal vessel. The dimensioned horizontal vessel with saddle supports and the saddle support structure is modeled using STAAD III finite element software. The stresses from the finite element software are compared with the stresses obtained from calculated stresses by ASME Code Sec VIII Div 1 and L. P. Zick’s analysis printed in 1951. The difference in the stress value is explained. This paper’s main objective is to compare the code design to the finite element analysis. The design is found to be safe for the specific configuration considered.

Numerical Analysis on Superplastic Forming of Friction Stir Welded AA6061-T6 Alloy Sheet

2012 ◽  
Vol 488-489 ◽  
pp. 753-758 ◽  
Author(s):  
P. Ganesh ◽  
V.S. Senthil Kumar
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Constant Pressure ◽  
Pressure Coefficient ◽  
Superplastic Forming ◽  
Element Model ◽  
Alloy Sheet ◽  
Element Analysis ◽  
Friction Stir ◽  
Finite Element Software

The friction stir welded superplastic forming of AA6061-T6 sheet has been numerically analyzed based on the experimental and finite element software. A selected range of tool rotating speeds of 500, 1000 and 2000 rpm was used for friction stir welding. At constant temperature of 550O C and constant pressure of 0.4 Mpa, superplastic forming experiments was performed using free forming die for the friction stir welded sheets. A detailed 3D element type study has been performed in the finite element analysis. The proposed finite element model has been validated in comparison with experimental data. The results are found to have reasonably good agreement between simulations and experiment. The effect of constant pressure, coefficient of friction, strainrate and strain-rate sensitivity has been studied using the proposed finite element model.

scholarly journals Structural design and mechanical properties analysis of bamboo-wood cross-laminated timber

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 5417-5432
Author(s):  
Chao Li ◽  
Xilong Wang ◽  
Yizhuo Zhang
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Stress Distribution ◽  
Maximum Load ◽  
Cross Laminated Timber ◽  
Finite Element Software ◽  
Error Coefficient ◽  
Final Stress ◽  
The Difference ◽  
Total Curve

To explore the overall mechanical properties of bamboo-wood composite cross-laminated timber (BCLT), a simulation model of BCLT mechanical behavior based on the solid element was established using the finite element software ABAQUS. The actual four-point bending experiment was compared and analyzed with the finite element numerical simulation. The total curve error coefficient of the BCLT specimen at 18-mm displacement was 0.2988 while the interval was 0.5 mm. The error coefficient was 0.0178 when the maximum load was reached, and the minimum error coefficient was 0.0015 at 12 mm of displacement. Analysis of the influence of material parameters, meshing density, and material arrangement on the final stress distribution indicate that the difference in the elastic parameters of the material greatly influence the final stress distribution, and the arrangement and combination of materials also have an effect on the overall mechanical properties of the BCLT board. The combination CLT1-2-1 (i.e., the upper and lower layers of the bamboo are Arrangement 1 and the hemlock is Arrangement 2) have a maximum load of 57682 Ν and a maximum stress of 103.9 MPa.

The Stress Laws of H-Beam Rolling Deformation during Rectangular Billet Cogging-Down

2013 ◽  
Vol 631-632 ◽  
pp. 632-636
Author(s):  
Lin Chen ◽  
Guo Chang ◽  
Shu Qin Liu ◽  
Ke Xin Bi
Keyword(s):  
Finite Element ◽  
Compression Ratio ◽  
Equivalent Stress ◽  
Stress Variation ◽  
Finite Element Software ◽  
Performance Requirements ◽  
Simulation Results ◽  
H Beam ◽  
And Performance ◽  
Rolling Deformation

In order to ensure H-beam’s organization and performance requirements, there is a certain compression ratio from the rolling of the billet to the finished product. This paper select rectangular billets and use DEFORM finite element software to simulate and analyze the rules of stress variation when rectangular billet is cogged down. The simulation results show that: from rectangular billet to finished product, the compression ratio is 17.4 and after cogging, billet size meet the requirements of the CCS rolling. The equivalent stress of breakdown rolling is mainly concentrated in the waist or in the junction of waist and legs. In the first few pass，equivalent stress is mainly concentrated in Sharp-angled position of both top and bottom, however the next few pass’s equivalent stress is mainly concentrated in the junction of web Plate and flange.

Researches on Rules of the Longitudinal Residual Stress Distribution in Straightening Deformation Zone of Heavy Rail with Multi-Rollers

2008 ◽  
Vol 575-578 ◽  
pp. 231-236 ◽  
Author(s):  
Lin Chen ◽  
Zhong Liang Tian ◽  
Mi Chao Gao ◽  
Wei Zong ◽  
Jian Guo Wang ◽  
...  
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Stress Distribution ◽  
Deformation Zone ◽  
Residual Stress Distribution ◽  
The Real ◽  
Rail Head ◽  
Finite Element Software ◽  
Longitudinal Residual Stress ◽  
Heavy Rail

The paper simulated and researched the straightening process of heavy rail by finite element software of ANSYS/LS-DYNA. The residual stress of the rail head, rail base, rail loin in the 7th deformation zone meets the real straightening condition in the straightening simulation. The calculation indicates: The residual stress of the rail head, rail base, rail loin in various deformation zones varies significantly like the variation of tensile-compression-tensile. Compared with the on-site rule, the residual stress of rail base decreased155 Mpa, this is in agreement with the values of practice.

The Segment Loading Static Finite Element Analysis on the Mobile Refuge Chamber

2014 ◽  
Vol 670-671 ◽  
pp. 755-758
Author(s):  
An Ning Zhang ◽  
Yu Ming Gu
Keyword(s):  
Finite Element ◽  
Static Analysis ◽  
Analysis Method ◽  
Uniform Loading ◽  
Element Analysis ◽  
Finite Element Software ◽  
Structure Strength ◽  
The Difference ◽  
Better Than ◽  
Made In

This paper studied the difference between the segment loading static analysis method and the uniform loading static analysis method on the mobile refuge chamber. The structure strength static analysis of the mobile refuge chamber was made in the uniform and segment loading ways by the finite element software SolidWorks Simulation. The stress cloud charts and the displacement cloud charts were obtained. The comparison result indicates that the results of the segment loads method are less than those of the uniform loading method and is closer to those of the dynamic analysis method. Therefore the segment loading static analysis method is better than the uniform loading one.

Comparative Analysis of Bearing Capacity of Inclined and Vertical Excavated Foundation

2014 ◽  
Vol 680 ◽  
pp. 241-244
Author(s):  
Rong Chen ◽  
He Feng Liu ◽  
Dong Xue Hao ◽  
Zhi Yun Wang
Keyword(s):  
Finite Element ◽  
Comparative Analysis ◽  
Numerical Model ◽  
Transmission Line ◽  
Failure Modes ◽  
Horizontal Displacement ◽  
Soil Mass ◽  
Finite Element Software ◽  
The Difference ◽  
Line Engineering

Excavated foundation has widely used in the field of transmission line engineering because of its large capacity to resist uplift and moment force. Elastic-plastic numerical model were established by using the finite element software ABAQUS focusing on the difference of bearing characteristics of inclined and vertical excavated foundation. There is very slight difference of axial uplift resistances between the both foundations because almost the same soil mass are mobilized at the same displacement loading. However, failure modes and horizontal resistances of negative, positive and vertical foundations are very different. The larger soil mass along the shaft of negative foundation is mobilized than positive and vertical foundations. The uplift resistances of vertical and negative foundations are about 5% and 25% higher than positive foundation at horizontal displacement of 50mm respectively.

scholarly journals Numerical study on the impact response of aircraft fuselage structures subjected to large-size tire fragment

2019 ◽  
Vol 103 (1) ◽  
pp. 003685041987774
Author(s):  
Senqing Jia ◽  
Fusheng Wang ◽  
Lingjun Yu ◽  
Zheng Wei ◽  
Bin Xu
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Impact Load ◽  
Numerical Study ◽  
Aircraft Fuselage ◽  
Finite Element Software ◽  
Large Size ◽  
The Difference ◽  
The Impact ◽  
Critical Damage

By applying finite element software ANSYS/LS-DYNA, finite element models of front bulkhead and main cabin are established, which aims to assess the dynamic response of fuselage structures impacted by tire fragment under bursting mode. Besides, dynamic characteristics of the two fuselage structures impacted by tire fragment are simulated and critical damage velocities of each working condition are obtained. The results show that composite front bulkhead cannot bear the impact load of front tire fragment at the velocity of 100 m/s, but aluminum alloy front bulkhead can. Main cabin with two properties both can bear the impact loads of front and main tire fragments. When impacted by front tire fragment, critical damage velocity of front bulkhead is approximately half of that of main cabin, while critical damage velocity of aluminum alloy fuselage is larger than that of composite fuselage. However, when impacted by main tire fragment, critical damage velocity of aluminum alloy main cabin is less than that of composite main cabin. Furthermore, maximum contact pressure of composite fuselage is 3–3.3 times than that of aluminum alloy fuselage. The difference in concave deformation is not significant when impacted by front tire fragment, but the difference is great when impacted by main tire fragment.

Sign in / Sign up

Export Citation Format

Share Document