Numerical Simulation of Multi-Step Deep-Drawing Processes: Trimming 3D Solid Finite Element Meshes

2009 ◽  
Author(s):  
A.J. Baptista ◽  
J.L. Alves ◽  
M.C. Oliveira ◽  
D.M. Rodrigues and
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Deep Drawing ◽  
Finite Element Meshes ◽  
3D Solid

Multi-Step Forward Finite Element Method for the Numerical Simulation of Sheet Metal Forming

2011 ◽  
Vol 474-476 ◽  
pp. 251-254
Author(s):  
Jian Jun Wu ◽  
Wei Liu ◽  
Yu Jing Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Mapping Method ◽  
Constitutive Relationship ◽  
Element Method

The multi-step forward finite element method is presented for the numerical simulation of multi-step sheet metal forming. The traditional constitutive relationship is modified according to the multi-step forming processes, and double spreading plane based mapping method is used to obtain the initial solutions of the intermediate configurations. To verify the multi-step forward FEM, the two-step simulation of a stepped box deep-drawing part is carried out as it is in the experiment. The comparison with the results of the incremental FEM and test shows that the multi-step forward FEM is efficient for the numerical simulation of multi-step sheet metal forming processes.

A Method of Improving Limiting Drawing Ratio：Differential Temperature Deep Drawing Based on Superplasticity

2011 ◽  
Vol 239-242 ◽  
pp. 392-397
Author(s):  
Xue Feng Xu ◽  
Ning Li ◽  
Gao Chao Wang ◽  
Hong Bo Dong
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Deep Drawing ◽  
Thickness Distribution ◽  
Coupled Analysis ◽  
Flowing Water ◽  
Finite Element Code ◽  
Uniform Thickness ◽  
Forming Process ◽  
Good Agreement

A thermal-mechanical coupled analysis of superplastic differential temperature deep drawing (SDTDD) with the MARC finite element code is performed in this paper. Initial drawing blank of an AA5083 bracket was calculated and adjusted according to the simulation result. During the SDTDD simulation, the power-law constitutive model of AA5083 was established as function of temperature and implanted in software MARC through new complied subroutine. Under the guide of the numerical simulation, the die was fabricated and the AA5083 bracket was successfully manufactured via superplastic differential temperature deep drawing. In forming practice, the temperature of female die was kept at 525°C, i.e. the optimal superplastic temperature of AA5083, and the punch was cooled by the flowing water throughout the forming process. The drawing velocity of punch was 0.1mm/s. Results revealed that the formed bracket had a sound uniform thickness distribution. Good agreement was obtained between the formed thickness profiles and the predicted ones.

EFG Method Used in Deep Drawing Numerical Simulation

2020 ◽  
Vol 26 (3) ◽  
pp. 136-143
Author(s):  
Vasile Năstăsescu ◽  
Ghiță Bârsan ◽  
Silvia Marzavan
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Deep Drawing ◽  
Meshfree Method ◽  
Thin Plates ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Element Free Galerkin ◽  
Element Free

AbstractThis paper brings in front of the interested researchers using one of the most known and used meshfree method, Element-Free Galerkin (EFG) method, in modelling of a technological process. It is about the deep drawing process of thin plates made of steel or aluminium. The paper gives information both for EFG method and for deep drawing process. The modelling as well the results are presented in a comparative way towards the using of Finite Element Method (FEM). The numerical analysis is based on the Ansys/Ls-Dyna program, in which EFG method is implemented. This numerical method is less known in our country and much less used, in spite of some advantages comparatively with the FEM. Of course, the EFG method is still under developing, but it can be successfully used in many problems. This paper is a proof in this sense and an urge to use the EFG method.

Finite Element Analysis of the Effect of Blank Holder Force on Deep Drawing of Bottom of Vacuum Flask

2011 ◽  
Vol 335-336 ◽  
pp. 483-486
Author(s):  
Liu Ru Zhou ◽  
Xian Wen Hu
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Deep Drawing ◽  
Blank Holder Force ◽  
Element Analysis ◽  
Blank Holder ◽  
Finite Element Software

Numerical simulation of deep drawing of bottom of vacuum flask is made by means of finite element software ANSYS/LS-DYNA and the potential defect was analyzed. The influence of the blank holder force on deep drawing quality is discussed .The results show that the maximal value of stress and thickness appears in the round corners of die .The maximal increased thickness is sheet flange and the maximal thinning is the round corners of punch. The larger is the blank holder force, the less equal is the thickness and the poorer deep drawing quality.

scholarly journals Numerical Simulation for the Honeycomb Core Sandwich Panels in Bending by Homogenization Method

2021 ◽  
Vol 15 ◽  
pp. 88-94
Author(s):  
Luong Viet Dung ◽  
Dao Lien Tien ◽  
Duong Pham Tuong Minh
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Sandwich Plate ◽  
Model Building ◽  
Computation Time ◽  
Cad Model ◽  
Honeycomb Core ◽  
Element Analysis ◽  
Finite Element Software ◽  
3D Solid

Nowadays, with the continuous development of science and technology, computer software has been widely applied and is increasingly popular in many fields such as the automobile, aviation, space, and shipbuilding industries. Numerical simulation is an important step in finite element analysis and product design optimization. However, it is facing challenges of reducing CAD model building time and reducing computation time. In this study, we have developed a homogenization model for the honeycomb core sandwich plate to reduce the preparation of the CAD model as well as the computational times. The homogenization consists of representing an equivalent homogenized 3D-solid obtained from the analysis calculation in-plane properties of honeycomb 3D-shell core sandwich plate. This model was implemented in the finite element software Abaqus. The simulations of tensile, in-plane shear, pure bending, and flexion tests for the case of the 3D-shell and 3D-solid models of the honeycomb core sandwich will be studied in this paper. Comparing the results obtained from the two models shows that the 3D-solid model has close results as the 3D-shell model, but the computation time is much faster. Thereby the proposed model is validated.

Numerical Simulation on Detecting Defects in Pipes Using T(0,1) Mode Guided Wave

2013 ◽  
Vol 823 ◽  
pp. 456-460 ◽  
Author(s):  
Long Xiang Zhu ◽  
Yue Min Wang ◽  
Feng Rui Sun
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Guided Waves ◽  
Guided Wave ◽  
Experimental Result ◽  
Propagation Property ◽  
Wave Technology ◽  
Pipe Model ◽  
3D Solid

The guided-wave technology is very efficient in inspecting a large portion of pipe. In order to study the propagation property of guided wave in pipe and the interaction between guided waves and defects, pipe model was established using 3D solid finite element in the software ANSYS. Tangential displacements were prescribed on the nodes in the pipe end and the propagating of T(0,1) mode guided wave in pipes was simulated. The detecting signals for the pipe model with different defects were extracted, which matched very well with experimental result.

Numerical Simulation and Experimental Study of Limit Drawing Ratio of Steel Sheets

2011 ◽  
Vol 189-193 ◽  
pp. 2539-2542
Author(s):  
Ji Ping Chen ◽  
Jian Qing Qian ◽  
Sheng Zhi Li
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Finite Element ◽  
Deep Drawing ◽  
Steel Sheet ◽  
Maximum Deviation ◽  
Drawing Ratio ◽  
Limit Drawing Ratio ◽  
Finite Element Software ◽  
Steel Sheets

The limit drawing ratios of the steel sheets are studied by the numerical simulation using the finite element software PAM-STAMP 2G. The limit drawing ratios of the steel sheets are also measured by the practical Swift cup test. The results of the experiments and the simulations are compared and analyzed. The results show that the overall shapes of the deep drawing parts of the experiment and the simulation are roughly the same. The maximum deviation of limit drawing ratio values between the experimental results and the simulations for two steel sheets with various thicknesses is only 2.2%. The deviation of limit drawing ratio of steel sheet obtained through PAM-STAMP FEM software is small. The PAM-STAMP software is highly reliable for the steel sheet deep drawing simulation.

A method for the improvement of 3D solid finite-element meshes

1995 ◽  
Vol 22 (1) ◽  
pp. 45-53 ◽  
Author(s):  
E. Amezua ◽  
M.V. Hormaza ◽  
A. Hernández ◽  
M.B.G. Ajuria
Keyword(s):  
Finite Element ◽  
Finite Element Meshes ◽  
3D Solid
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