Finite-element analysis and design of binder wraps for automobile sheet metal parts using surface boundary condition

1995 ◽  
Vol 4 (5) ◽  
pp. 593-598 ◽  
Author(s):  
I. S. Song ◽  
D. J. Yoo ◽  
J. W. Yoon ◽  
D. Y. Yang ◽  
H. Huh ◽  
...  
Keyword(s):  
Boundary Condition ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Sheet Metal ◽  
Surface Boundary ◽  
Element Analysis ◽  
Analysis And Design ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Surface Boundary Condition

Research on the Maximum Riveting Force Based on Theory of Compression Instability

2013 ◽  
Vol 716 ◽  
pp. 744-748 ◽  
Author(s):  
Jun Qing Yin ◽  
Zhong Qi Wang ◽  
Yong Gang Kang ◽  
Yu Long Hu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Process Simulation ◽  
Theoretical Basis ◽  
Mathematics Model ◽  
Element Analysis ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Riveting Process ◽  
Thin Walled

The riveting joint is the main connection to fasten two thin-walled sheet-metal parts in aircraft assembly. As one of important parameters in riveting process, the riveting force is mostly determined by the experience and experiments in actual production, lack of theoretical basis supported. This paper researched the maximum allowed value of riveting force in the elastic deformation stage of riveting process. Based on the theory of compression instability, the mathematics model of relationship among rivets diameter, rivet holes diameter and maximum riveting force was built. Then, by using the software for finite element analysis-ABAQUS, the instance of riveting process simulation was made. Finally, the result of instances simulation was compared with the mathematics model. The comparison shows that the mathematics model based on the theory of compression instability is effective and correct.

Optimisation of Springback Predicted by Experimental and Numerical Approach by Using Response Surface Methodology

2005 ◽  
Vol 6-8 ◽  
pp. 753-762
Author(s):  
R. Bahloul ◽  
Phillippe dal Santo ◽  
Ali Mkaddem ◽  
A. Potiron
Keyword(s):  
Response Surface ◽  
Sheet Metal ◽  
Design Method ◽  
Fem Simulation ◽  
Numerical Approach ◽  
Tool Geometry ◽  
Nose Radius ◽  
Element Analysis ◽  
Metal Parts ◽  
Sheet Metal Parts

Bending has significant importance in the sheet metal product industry. Moreover, the springback of sheet metal should be taken into consideration in order to produce bent sheet metal parts within acceptable tolerance limits and to solve geometrical variation for the control of manufacturing process. Nowadays, the importance of this problem increases because of the use of sheet-metal parts with high mechanical characteristics (High Strength Low Alloy steel). This work describes robust methods of predicting springback of parts in 3D modelling subjected to bending and unbending deformations. Also the effects of tool geometry in the final shape after springback are discussed. The first part of this paper presents the laboratory experiments in wiping die bending, in which the influence of process variables, such as die shoulder radius, punch-die clearance, punch nose radius and materials properties were discussed. The second part summarises the finite element analysis by using ABAQUS software and compares these results with some experimental data. It appeared that the final results of the FEM simulation are in good agreement with the experimental ones. An optimisation methodology based on the use of experimental design method and response surface technique is proposed in the third part of this paper. That makes it possible to obtain the optimum values of clearance between the punch and the die and the optimum die radius which can reduce the springback without cracking and damage of product.

Sign in / Sign up

Export Citation Format

Share Document