scholarly journals FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates

2007 ◽  
Vol 20 (6) ◽  
pp. 564-569 ◽  
Author(s):  
Huang Lina ◽  
Wan Mina ◽  
Chi Cailoub ◽  
Ji Xiushengb
Keyword(s):  
Aluminum Alloy ◽  
Fem Analysis

Study on Aluminum Alloy Helicopter Deck under Static Loads

2014 ◽  
Vol 926-930 ◽  
pp. 889-895
Author(s):  
An Tao Feng ◽  
Xin Gang Zhou
Keyword(s):  
Aluminum Alloy ◽  
Sandwich Panel ◽  
Static Load ◽  
Mechanical Performance ◽  
Fem Simulation ◽  
Fem Analysis ◽  
Test Results ◽  
Compressive Loads ◽  
Ultimate Load Carrying Capacity ◽  
Load Conditions

Test and study of aluminum alloy helicopter deck under static load were carried out. The deck is made of aluminum alloy sandwich panel. In the experiment, the deflection and stress of deck are measured under different static load conditions. Load conditions are determined by the conditions that helicopter berths at the deck. When helicopter berths at the deck, the deck endures vertical compressive loads on the deck surface and diagonal tension loads on the tie-down rod which is used to fasten the helicopter. According to the test results under different load conditions, the characteristic behavior and ultimate load carrying capacity were analyzed. Based on experimental results, FEM simulation was made. The results of FEM analysis was agreed with the test results very well. It is shown that the helicopter deck which is composed of aluminum alloy sandwich panel has good mechanical performance.

Influence of Cutting Data on the Thin Wall Deformation in Milling of Difficult to Cut Materials

2016 ◽  
Vol 686 ◽  
pp. 86-91 ◽  
Author(s):  
Łukasz Ślusarczyk ◽  
Andrzej Matras
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Theoretical Calculations ◽  
Fem Analysis ◽  
Experimental Measurements ◽  
Thin Wall ◽  
High Speed Camera ◽  
Carbide Tool ◽  
Sintered Carbide ◽  
Wall Deformation

The paper presents the results of milling tests of aluminum alloy with a sintered carbide tool. For selected sets of cutting data, the thin wall deformation of the workpieces was analyzed. Theoretical calculations were compared with the experimental measurements, using the high speed camera and FEM analysis.

FEM Analysis of the Ultimate Strength of Aluminum Stiffened Panels With Fixed and Floating Transverse Frames

2015 ◽  
Author(s):  
Chenfeng Li ◽  
Huilong Ren ◽  
Zhiyao Zhu ◽  
Carlos Guedes Soares
Keyword(s):  
Aluminum Alloy ◽  
Residual Stresses ◽  
Ultimate Strength ◽  
Fem Analysis ◽  
Simulation Method ◽  
Tensile Tests ◽  
Stiffened Panels ◽  
New Type ◽  
Aluminum Panels ◽  
Positive Effect

The aim of this study was to analyze the ultimate strength of stiffened aluminum panels by the non-linear finite element method. A new type of stiffened aluminum alloy panel has been designed which has fixed longitudinal and alternating floating transverse frames. Based on material tensile tests, the material properties of the aluminum alloy were obtained. Then, the simulation method of welding residual stresses and the effect of heat-affected zone are investigated. The FEA software ABAQUS V6.11 is used to estimate the ultimate strength of these stiffened panels under axial compression. The results show that: 1) The mechanical imperfections have significant effect on ultimate strength of stiffened panels; 2) residual stresses may have positive effect on ultimate strength; 3) the new stiffened panels also have good performance on ultimate bearing capacities.

Experimental Studies and FEM Analysis on the Creep Age Forming for Aluminium Alloy 7050

2013 ◽  
Vol 773-774 ◽  
pp. 144-152 ◽  
Author(s):  
Xia Huang ◽  
Yuan Song Zeng ◽  
Pen Tao Gai
Keyword(s):  
Aluminum Alloy ◽  
Constitutive Equations ◽  
Experimental Studies ◽  
Fem Analysis ◽  
Age Hardening ◽  
Maximum Relative Error ◽  
Forming Process ◽  
Creep Tests ◽  
Whole Process ◽  
Creep Age Forming

Creep age forming (CAF) is a combined creep forming and age hardening treatment process. How to control the springback after forming is one of the key problems for the process. In this paper, Creep tests were conducted for different stress levels at 160°C for 25h, which is the suitable parameters for CAF process of aluminum alloy 7050T451. Based on experimental results, a set of mechanism-based creep constitutive equations was formulated. The six material constants of the constitutive equations were determined by non-linear least squares fitting methods. The creep age forming process for aluminum alloy 7050T451 plate was simulated by using FE software ABAQUS through the subroutine CREEP. The effects of the forming parameters on the springback were analyzed. Finally, experimental research was performed. It is found that the developed numerical simulation can be used to simulate the whole process of creep age forming process. The maximum relative error is 6.9%.

Numerical Analysis for the Bending Process of Profile with Stiffener

2011 ◽  
Vol 418-420 ◽  
pp. 1083-1086 ◽  
Author(s):  
Chun Guo Liu ◽  
Yuan Yao ◽  
Yu Shan Deng ◽  
Xue Zhen Li
Keyword(s):  
Aluminum Alloy ◽  
Numerical Analysis ◽  
Cross Section ◽  
Weight Reduction ◽  
Manufacturing Industry ◽  
Fem Analysis ◽  
Inner Pressure ◽  
Bending Process ◽  
The Given ◽  
Common Defect

Aluminum alloy profile has been widely used in manufacturing industry for weight reduction. In the bending process of profile, the cross-section distortion is a common defect and also springback always happens in unloading process. In the paper, the bending process of a hollow profile with stiffener was simulated to optimize the forming parameters. Different bending radiuses and inner pressure were chosen in FEM analysis and the suitable radius and calculation equation of pressure for the given profile were obtained. The springback at different bending radiuses were studied to provide the principle of shape compensation.

Investigation of Strain Hardening in Aluminum Alloy Sheared Sheet Based on Microhardness Measurement and FEM Analysis

2018 ◽  
Vol 12 (5) ◽  
pp. 714-722 ◽  
Author(s):  
Pusit Mitsomwang ◽  
Rattana Borrisutthekul ◽  
Usanee Kitkamthorn ◽  
Shigeru Nagasawa ◽  
◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Strain Hardening ◽  
Fem Analysis ◽  
Cutting Parameters ◽  
Hardness Measurement ◽  
Maximum Principal Stress ◽  
Microhardness Measurement ◽  
Fem Model ◽  
Hardened Zone ◽  
Wear And Friction

This research was carried out to investigate the strain hardening in an aluminum alloy worksheet caused by punch/die shearing by means of microhardness measurement and finite element method (FEM) analysis. To examine the strain-hardened zone at the sheared edge of a worksheet, a 0.36 mm thick AA4047 aluminum alloy cut by punch/die shearing was subjected to microhardness measurements. In addition, a two-dimensional FEM model was developed and used to simulate the shear cutting of the aluminum alloy worksheet. The fundamental shear cutting parameters, punch/die clearance, cutting tool wear, and friction at the worksheet/tool interfaces were numerically varied and simulated. From the investigation results, the strain-hardened zone was observed by hardness measurement. The size of the zone significantly varied under different cutting parameters. From the simulated stresses at the sheared zone, the variation of the width of the strain-hardened zone with respect to cutting parameters was determined by the maximum principal stress on the worksheet being sheared.

Sign in / Sign up

Export Citation Format

Share Document