scholarly journals Study on Counter-Roller Spinning Technology of Large Diameter Aluminum Alloy Cylindrical Parts

2021 ◽  
Vol 2101 (1) ◽  
pp. 012039
Author(s):  
Tao Huang ◽  
Bo Lu ◽  
Wei Luo ◽  
Jian Wang ◽  
Yaming Guo ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Large Diameter ◽  
Element Model ◽  
Feed Ratio ◽  
Technological Parameters ◽  
Fillet Radius ◽  
Grey Correlation Analysis ◽  
Cylindrical Parts ◽  
Distribution Of Stress ◽  
The Finite Element Model

Abstract Counter-roller spinning is an optimal process for forming large diameter cylindrical parts. In this paper, the finite element model of large diameter aluminum alloy cylindrical parts Counter-roller spinning is established, the regularities of distribution of stress and strain of each pass of the workpiece is obtained, as well as the influence of the roller feed ratio and fillet radius on the forming quality is obtained. The process parameters were optimized by grey correlation analysis. In this paper, for large diameter aluminum alloy cylindrical parts, the optimal spinning parameters are obtained as follows: the feed ratio is 1.0mm/r, the rotary roller fillet radius is 8mm. The results of numerical simulation are consistent with those of process test. The technological parameters can be used to guide the actual production of such large diameter cylindrical parts.

Strength Analysis for Composite Windshield of Commercial Aircraft

2014 ◽  
Vol 1030-1032 ◽  
pp. 1010-1013
Author(s):  
Ya Xiong Du ◽  
Shu Li ◽  
Kai Guo
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Rational Design ◽  
Element Model ◽  
Strength Analysis ◽  
Commercial Aircraft ◽  
Load Pressure ◽  
Full Size ◽  
Advanced Composites ◽  
The Finite Element Model

With the development of advanced composites technology, composites instead of traditional aluminum alloy, will be widely used to build full-size aircraft windshield structure in the aviation field. The finite element model of commercial aircraft composite windshield is established in the environment of Msc.Patran / Nastran. And based on Tasi-Wu failure criterion, the strength of windshield structure under typical load pressure is predicted and analyzed during failure processes. It shows that composite windshield can work better through rational design according to the analysis result.

Mechanical Performance of Large Cantilevered CFT Beam-Column Joint in Jiangyin Magic Cube Time Square

2010 ◽  
Vol 163-167 ◽  
pp. 25-31
Author(s):  
Fei Wang ◽  
Yong Feng Luo ◽  
Xiao Nong Guo ◽  
Han Xu ◽  
Ping He
Keyword(s):  
Load Transfer ◽  
Mechanical Performance ◽  
Large Diameter ◽  
Element Model ◽  
Steel Beams ◽  
Test Results ◽  
Column Joint ◽  
Scale Test ◽  
Magic Cube ◽  
The Finite Element Model

The leading building in Magic Cube Time Square in Jiangyin is a rare large-cantilevered structure in China, with the standard floors overhanging 9m outwards. Concrete filled tube columns in large diameter and steel beams are applied in the peripheral part of the building frame. In this research, the full-scale test is conducted to investigate the mechanical performance of the concrete-filled beam-column joint. Self-balanced loading frame with dimensions of 15m×10m×10m is built due to the complexity of the joint, the greatness of load and the difficulty of loading condition. Meanwhile, the finite element model is generated to inspect the performance of the beam-column joint under the test loads for verification. Through comparisons of test results and FEM results, good mechanical performance and reasonable load transfer mechanism of the joint are presented in the paper. It is verified that the joint is reliable under 1.3 times of the design load. The effect of ring stiffeners is also studied in this paper.

The Dynamic Dent Resistance Analysis of Automotive Hood Outer Panel

2012 ◽  
Vol 462 ◽  
pp. 259-264
Author(s):  
Shan Ling Han ◽  
Li Sha Yu ◽  
Lei Yang ◽  
Qing Liang Zeng
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Model ◽  
Geometric Model ◽  
Quality Criterion ◽  
Element Model ◽  
Steel Panel ◽  
Resistance Analysis ◽  
The Finite Element Model

Dent resistance of automobile panels becomes an important issue and quality criterion. In this paper, the dynamic dent resistance of automotive hood outer panel is analyzed by means of finite element method. The geometric model of automotive hood outer panel is firstly established by UG software. Then the finite element model of automotive hood outer panel is established in ANSYS. The dynamic dent resistance of automotive hood outer panel is analyzed by simulating the collision between a rigid ball and an automotive hood outer panel. The results show that compared with the traditional steel panel, the automotive hood outer panel made of aluminum alloy can reduce its weight by 36.3% while meeting the requirement of dynamic dent resistance. It is concluded that making automotive hood outer panel by aluminum alloy is feasible for automobile lightweight.

FEM Simulation and Experimental Study on Miling Force for Aero-Aluminum Alloy Based on Trochoid-Motion

2011 ◽  
Vol 317-319 ◽  
pp. 222-226
Author(s):  
Jin Yu ◽  
Yu Xiang Shi ◽  
Gui Wu Yang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Model ◽  
Fem Simulation ◽  
Element Model ◽  
Milling Force ◽  
Parallel Motion ◽  
Aluminum Alloy 7075 ◽  
The Finite Element Model ◽  
Simulation Time

By analyzing the relative position between tool and workpiece in assemble model of finite simulation, and loading the tool with parallel motion and rotation, a finite element model based on trochoid motion is built. In order to reduce the simulation time and errors advanced meshing method was used to optimize the finite element model. This paper considers performance parameter of the workpiece, and researches a simulation of milling force on the Aero-aluminum Alloy 7075-T7451 by using ABAQUS. The milling force finite element model was verified to be feasible, and the result is reliable.

Non-Local Damage Model to Predict the Effect of Pre-Strain on Ductile Fracture in Aluminum Alloy 5052

2012 ◽  
Author(s):  
Yaser Alinaghian ◽  
Mahyar Asadi ◽  
Arnaud Weck
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Model ◽  
Ductile Fracture ◽  
Damage Model ◽  
Element Model ◽  
Local Damage ◽  
Micron Size ◽  
Non Local ◽  
The Finite Element Model

Metallic components may develop plastic deformation before in-service loading (pre-strain) due to manufacturing process and/or unexpected loading. This pre-strain not only affects the yield strength of the material but also influences its fracture properties. The work presented here employed laser drilled model materials to better understand the effect of pre-strain on ductile fracture in aluminum alloy 5052. The micron-size laser drilled holes mimic voids forming during ductile fracture. These laser holes are introduced after the material has been pulled in tension to various amounts of pre-strain. The effect of pre-strain on void growth and linkage leading to fracture is studied. A non-local damage is used in a finite element model to predict linkage between voids. This non-local damage has only two adjustable parameters, namely the local failure strain in uniaxial tension and the characteristic length L which intervenes in the non-local averaging scheme. The precise arrangement of the laser holes can be exactly reproduced in the finite element model which allows the model to be validated with the experimental results.

The Strength Analysis of Pre-Tightening Force on Covering Pipe-Ear

2015 ◽  
Vol 741 ◽  
pp. 171-174
Author(s):  
Hong Wei Wang ◽  
Gan Zhou ◽  
Mei Juan Zhou
Keyword(s):  
Aluminum Alloy ◽  
Element Model ◽  
Static Strength ◽  
Strength Analysis ◽  
Distribution Law ◽  
Line System ◽  
Reliability Design ◽  
Tightening Force ◽  
Ice Load ◽  
The Finite Element Model

The covering pipe-ear is one of the important components of the overhead contact line system (OCS) for supporting loads. The finite element model of covering pipe-ear was established, as the pre-tightening force, wind load and ice load all have effect on it, the stress distribution law were simulated under 12 kinds of loading conditions. The results show that the pre-tightening force has remarkable influence on covering pipe-ear and 2500N pre-tightening force is appropriate for the aluminum alloy covering pipe-ear. It is useful for the catenary components static strength reliability design.

Stress Intensity Analysis of GFRP Bridge Deck Structure

2011 ◽  
Vol 105-107 ◽  
pp. 1197-1202
Author(s):  
Kun Ning Zhu ◽  
Shui Wan
Keyword(s):  
Finite Element ◽  
Stress Intensity ◽  
Bridge Deck ◽  
Element Model ◽  
Bottom Plate ◽  
Intensity Analysis ◽  
Safe State ◽  
Material Utilization ◽  
Distribution Of Stress ◽  
The Finite Element Model

The finite element model is built by ANSYS, and the distribution of stress is studied. The stress intensity of each layer is computed by Tsai-Wu stress intensity standard. The value computed by Tsai-Wu stress intensity standard under given loads are smaller than 1, and the GFRP bridge deck is in a safe state. The first ply failure is also studied, and the result shows that the first ply failure value is determined by the webs when the webs are very thin. Other circumstances the value is determined by the size of the top and bottom plate. The material utilization is the highest when the thickness of the bottom is equal to the whole webs and a little thinner than the top plate.

Numerical Simulation of Aluminum Alloy Wheel 13° Impact Test Based on Abaqus

2012 ◽  
Vol 215-216 ◽  
pp. 1191-1196 ◽  
Author(s):  
Xiao Ming Yuan ◽  
Li Jie Zhang ◽  
Xin Ying Chen ◽  
Bing Du ◽  
Bao Hua Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Finite Element Model ◽  
Impact Test ◽  
Equivalent Plastic Strain ◽  
Element Model ◽  
Experimental Result ◽  
Alloy Wheel ◽  
The Impact ◽  
The Finite Element Model

In order to predict the result of impact test in the design phase and reduce the experimental times, which can save cost and shorten development cycle, a finite element model of aluminum alloy wheel 13-degree impact test is established based on Abaqus. All mechanical parts such as the standard impact block, the assembly of the wheel and the tire, the support and bolts are included in the finite element model. The predicted result of finite element analysis and the experimental result agree very well shows the finite element model is correct. The equivalent plastic strain value was also put forward as fracture criterion for the wheel in the impact test which realizes the transition from the qualitative analysis to the quantitative analysis in the development process of aluminum alloy wheel.

Redrawing Operation a Star Shape from Cylindrical Shape Using Experimental and FE Analysis

2020 ◽  
Vol 38 (1A) ◽  
pp. 25-32
Author(s):  
Waleed Kh. Jawad ◽  
Ali T. Ikal
Keyword(s):  
Finite Element ◽  
Effective Strain ◽  
Element Model ◽  
Cylindrical Shape ◽  
Element Analysis ◽  
Punch Force ◽  
Maximum Value ◽  
Element Simulation ◽  
Blank Sheet ◽  
The Finite Element Model

The aim of this paper is to design and fabricate a star die and a cylindrical die to produce a star shape by redrawing the cylindrical shape and comparing it to the conventional method of producing a star cup drawn from the circular blank sheet using experimental (EXP) and finite element simulation (FES). The redrawing and drawing process was done to produce a star cup with the dimension of (41.5 × 34.69mm), and (30 mm). The finite element model is performed via mechanical APDL ANSYS18.0 to modulate the redrawing and drawing operation. The results of finite element analysis were compared with the experimental results and it is found that the maximum punch force (39.12KN) recorded with the production of a star shape drawn from the circular blank sheet when comparing the punch force (32.33 KN) recorded when redrawing the cylindrical shape into a star shape. This is due to the exposure of the cup produced drawn from the blank to the highest tensile stress. The highest value of the effective stress (709MPa) and effective strain (0.751) recorded with the star shape drawn from a circular blank sheet. The maximum value of lamination (8.707%) is recorded at the cup curling (the concave area) with the first method compared to the maximum value of lamination (5.822%) recorded at the cup curling (the concave area) with the second method because of this exposure to the highest concentration of stresses. The best distribution of thickness, strains, and stresses when producing a star shape by

Numerical Analysis of Metro Station Construction by Large-Diameter Shield and Pile-Beam-Arch Method

2011 ◽  
Vol 368-373 ◽  
pp. 2711-2715 ◽  
Author(s):  
De Yun Ding ◽  
Xiu Ren Yang ◽  
Wei Dong Lu ◽  
Wei Ning Liu ◽  
Mei Yan ◽  
...  
Keyword(s):  
Ground Deformation ◽  
Large Diameter ◽  
Element Model ◽  
Construction Method ◽  
Shield Tunnel ◽  
Outer Diameter ◽  
Shield Tunneling ◽  
Metro Station ◽  
Dimensional Finite Element ◽  
New Construction

In more and more complicated urban building environment, a new construction method that metro engineering is constructed by large-diameter shield and shallow mining method can be regarded as a great attempt in China. By taking the Gaojiayuan station of Beijing metro line 14 as an engineering background, the main construction steps for the platform of the metro station built by a large-size shield with an outer diameter of 10 m and the Pile-Beam-Arch (PBA) method are introduced. Based on the soil-structure interaction theory, a two-dimensional finite element model is used to simulate the shield tunneling and the platform construction by the PBA method to enlarge the shield tunnel. The ground deformation and structural stress of the platform are predicted. The numerical results can be regarded as a valuable reference for the application of the new construction method in Beijing metro line 14.

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