The Finite Element Analysis for Dimensional Accuracy in Roll Bending of Aluminum-Polymer Laminated Sheet

2013 ◽  
Vol 390 ◽  
pp. 574-578
Author(s):  
Qing Shuai Kong ◽  
Zhong Qi Yu ◽  
Yi Xi Zhao ◽  
Shu Hui Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Model ◽  
Sheet Material ◽  
Dimensional Accuracy ◽  
Elastic Model ◽  
Element Analysis ◽  
Roll Bending ◽  
The Finite Element Analysis ◽  
Bending Process

The padding assisted roll bending technology is the main method to manufacture the cylinder structure with variable thickness. In order to study the deformation behavior of the padding assisted roll bending process, a numerical simulation model of the aluminum-polymer laminated sheet three-roll bending is established based on the finite element method. In the numerical simulation model, the sheet material Al2024-T3 is selected elasto-plastic model, and the padding material nylon PA6-G is elastic model. Based on the simulation results, the following conclusions are drawn: the cylinder radius of the sheet Al2024-T3 decreases with decreasing of the ratio of the nylon PA6-G or increasing of the stroke of the upper roller; And in the direction of bend line, an appropriate thickness compensation of the nylon PA6-G can improve the consistency of the curvature of the sheet Al2024-T3.

scholarly journals Mechanical Behavior and Damage of Zinc Coating for Hot Dip Galvanized Steel Sheet DP600

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 202
Author(s):  
Gui Li ◽  
Xiaoyu Long
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Steel Sheet ◽  
Steel Substrate ◽  
Zinc Coating ◽  
Indentation Test ◽  
Galvanized Steel ◽  
Element Analysis ◽  
The Finite Element Analysis

Advanced high strength galvanized steel sheet has been one of the dominant materials of modern automotive panels because of its outstanding mechanical properties and corrosion resistance. The zinc coating thickness of hot dip galvanized steel sheet is only about 10–20 μm, which is a discarded object on the macro level. However, it is obvious to damage and impact on stamping performance. Therefore, this paper takes zinc coating as the research object and builds its mechanical constitutive model based on a nano-indentation test and dimensional analysis theory. We separated the zinc coating from the galvanized steel substrate and constructed a sandwich material model by introducing a cohesive layer to connect the zinc coating and the steel substrate. We obtained the interface binding energy between the zinc coating and the steel substrate through the nano-scratch test. The accuracy of the model is verified by the finite element analysis of hemispherical parts. We used the five-layers element model with 0 thickness cohesive layer to simulate the zinc coating damage of galvanized steel sheet. The hemispherical part drawing experiment is used to verify the feasibility of the finite element analysis results. The results demonstrate that it is more accurate to consider the finite element numerical simulation of the zinc coating, introducing the cohesive element to simulate damage between the coating and the substrate. Drawing depth, stamping force, and the strain of the numerical simulation are closer to the experimental results.

scholarly journals Analysis and Control of Twist Defects of Aluminum Profiles with Large Z-Section in Roll Bending Process

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 31 ◽  
Author(s):  
Anheng Wang ◽  
Hongqian Xue ◽  
Emin Bayraktar ◽  
Yanli Yang ◽  
Shah Saud ◽  
...  
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Element Model ◽  
Effective Control ◽  
Curvature Radius ◽  
3D Fem ◽  
Fe Method ◽  
Element Analysis ◽  
Roll Bending ◽  
Bending Process

This paper focuses on the twist defects and the control strategy in the process of four-roll bending for aluminum alloy Z-section profiles with large cross-section. A 3D finite element model (3D-FEM) of roll bending process has been developed, on the premise of the curvature radius of the profile, the particularly pronounced twist defects characteristic of 7075-O aluminum alloy Z-section profiles were studied by FE method. The simulation results showed that the effective control of the twist defects of the profile could be realized by adjusting the side roller so that the exit guide roll was higher than the entrance one (the side rolls presented an asymmetric loading mode with respect to the main rolls) and increasing the radius of upper roll. Corresponding experimental tests were carried out to verify the accuracy of the numerical analysis. The experimental results indicated that control strategies based on finite element analysis (FEA) had a significant inhibitory function on twist defects in the actual roll bending process.

Numerical Simulation of Stress and Deformation on Heat Transfer

2011 ◽  
Vol 422 ◽  
pp. 842-845
Author(s):  
Xue Ping Wang ◽  
Ying Zhang ◽  
Pan Li ◽  
Zhen Wei Zhang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Exchange ◽  
Structure Design ◽  
Stress And Strain ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Stress And Deformation

This paper primarily simulates the heat exchange part’s stress and strain situation under the load of temperature and gravity and their coupling impact aiming at obtaining the stress and deformation distribution. The authors took advantage of the method of the finite element analysis to study the stress and strain situation. Through the analysis, each part of the transfer’s stress and strain can be calculated. The conclusion of this paper provides the basis for the further enhancement of the machine life and optimization of the structure design.

Numerical Simulation of Transient Finite Deformations of Thin Beams

1983 ◽  
Vol 50 (4a) ◽  
pp. 765-769
Author(s):  
J. J. A. Rodal ◽  
D. J. Steigmann ◽  
E. A. Witmer
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Deformations ◽  
Viscoplastic Deformation ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Solution Methods ◽  
Representative Problem ◽  
Thin Beams

The formulation of the problem of finite elastic-viscoplastic deformation of thin beams is described. The finite element analysis of a representative problem is presented and various solution methods are surveyed.

Technological Process Optimization of Hot-Machining Numerical Simulation

2013 ◽  
Vol 364 ◽  
pp. 474-477
Author(s):  
Yin Ping Huang ◽  
Min Tua Ma ◽  
Fu Ping Ning ◽  
Rui Fen Chen
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Casting Process ◽  
Analysis Method ◽  
Element Analysis ◽  
Finite Element Software ◽  
Analysis Process ◽  
The Finite Element Analysis ◽  
Hot Machining ◽  
Analysis System

Applying the CAD/CAE method and the finite element analysis system, It was the research of the optimization technology about diesel body of the ship in the casting process in the paper. There are the functions of finite element software and application method in the paper, too. The analysis method can forecast the castings defects and advance the quality control. Applying the HyperMesh module of finite element software, we can cut the optimization period and realize the flow restructure analysis process to large-scaled complex castings.

scholarly journals A Study on the Mechanical Characteristics of String Planes of Badminton Racquets by Nonlinear Finite Element Analysis

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 42
Author(s):  
Masatomo Takizawa ◽  
Akihiro Matsuda ◽  
Tomohiro Hashiguchi
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characteristics ◽  
Dynamic Effect ◽  
Elastic Model ◽  
Geometrical Shape ◽  
Element Analysis ◽  
Simulation Code ◽  
Yeoh Model

In this study, the finite element analysis of the string planes of badminton racquets was investigated to evaluate the effect of the mechanical characteristics of polymer strings. The nonlinear mechanical characteristics of commercially available polymer strings were obtained by the uniaxial loading tests experimentally. The effects of the strain rate on the mechanical characteristics of the polymer strings were also investigated to consider the dynamic effect on the numerical simulation. The numerical simulation code used to analyze the string planes of the badminton racquets was developed originally. A nonlinear elastic model (Yeoh model) was applied to the mechanical characteristics of the polymer string. Simulated results were compared with the experimental results. The effect of the mechanical characteristics of the polymer strings and the geometrical shape of the badminton racquets on the out-of-plane stiffnesses were investigated.

Finite Element Analysis on Spread for In-plane Roll-bending Process

2010 ◽  
Author(s):  
Z. J. Li ◽  
H. Yang ◽  
F. Barlat ◽  
Y. H. Moon ◽  
M. G. Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Roll Bending ◽  
Bending Process

Development and Application of the Finite Element Analysis Program of the Stress-Based Forming Limit Criterion for Sheet Metal Forming

2007 ◽  
Vol 561-565 ◽  
pp. 1995-1998
Author(s):  
Ming He Chen ◽  
J.H. Li ◽  
Lin Gao ◽  
Dun Wen Zuo ◽  
Min Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Forming Limit ◽  
Analysis Program ◽  
Element Analysis ◽  
The Finite Element Analysis

In order to solve the problem existed in the numerical simulation of sheet metal forming for its use the strain-based forming limit diagram as criterion, which has the flaw of dependence on the strain paths, this paper develops the finite element analysis program based on the stress forming limit criterion applicable to the blank plastic forming technique, which follows the stress-strain transformation relationship when the sheet metal is undergoing plastic deformation, chooses Hill’s quadratic normal anisotropic criterion as computational model and selects the commercial finite element code Dynaform as its development environment. Also it be analyzed the finite element numerical simulation results of two deep drawing parts by the developed program module and realizes the prediction of sheet metal forming limit adopting the FLSD as criterion. The stress-based forming limit criterion for the developed program provides a new means to analyze the forming limit for the multistage sheet metal forming.

Finite Element Analysis of Self-Pierce Riveted Joints

2007 ◽  
Vol 344 ◽  
pp. 663-668 ◽  
Author(s):  
Xiao Cong He ◽  
Ian Pearson ◽  
Ken W. Young
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Sheet Material ◽  
Dissimilar Materials ◽  
Failure Criteria ◽  
Process Window ◽  
Element Analysis ◽  
Die Geometry ◽  
Riveted Joints ◽  
The Finite Element Analysis

Self-pierce riveting (SPR) is a sheet material joining technique which is suitable for joining dissimilar materials, as well as coated and pre-painted materials. Published work relating to finite element analysis of SPR joints is reviewed in this paper, in terms of process, static strength, fatigue strength, vibration characteristics and assembly dimensional prediction of the SPR joints. A few important numerical issues are discussed, including material modelling, meshing procedure, failure criteria and friction between substrates and between rivet and substrate. It is concluded that the finite element analysis of SPR joints will help future applications of SPR by allowing system parameters to be selected to give as large a process window as possible for successful joint manufacture. This will allow many tests to be simulated that would currently take too long to perform or be prohibitively expensive in practice, such as modifications to rivet geometry, die geometry or material properties. The main goal of the paper is to review recent progress in finite element analysis of SPR joints and to provide a basis for further research.

The Effect of the Sheet Metal Postures on the Forming Thickness Based on the Finite Element Analysis

2021 ◽  
Vol 1018 ◽  
pp. 131-135
Author(s):  
Hu Zhu ◽  
Yang Wang ◽  
Dong Won Jung
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Comparative Analysis ◽  
Sheet Metal ◽  
Element Analysis ◽  
Thickness Uniformity ◽  
The Finite Element Analysis ◽  
Formed Part ◽  
Inclined Angle

In order to analysis the effect of the sheet metal postures on the forming thickness, the horizontal sheet posture, the multidirectional sheet postures with the inclined angle of , and the multidirectional sheet postures obtained after optimization were respectively used for comparative analysis through the numerical simulation against the same model. The result shows that the optimized multidirectional sheet metal postures can reduce the overall thickness difference of the formed part and realize the thickness uniformity.

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