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.

Numerical Simulation of Magnesium Alloy AZ31B Sheets with Thermal Deep-Drawing Process

2007 ◽  
Vol 546-549 ◽  
pp. 289-292 ◽  
Author(s):  
Yan Dong Yu ◽  
Cai Xia Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Magnesium Alloy ◽  
Deep Drawing ◽  
Blank Holder Force ◽  
Thickness Change ◽  
Blank Holder ◽  
Finite Element Software ◽  
Magnesium Alloy Az31b ◽  
Finite Element Numerical Simulation

The finite element numerical simulation for the formability of magnesium alloy AZ31B sheets with thickness of 0.8mm and diameter of 140mm has been proceeded to investigate the formability using the current finite element software. Under the condition with blank holder force of 8KN and deep drawing speed of 0.3mm/s at 200, the sytematic analysis and prediction of the thickness change and the forming rule for thesimulation process of the blank has been carried out. Under the same parameter, the drawing parts by deep drawing with a hydaulic machine were obtained and the thickness tested. It has been found that thickness change rules and the forming rules of the experimental results were in agreement with the numerical simulations.

Finite Element Analysis of Double Curvature and Large-Area Workpiece in Hot Gas Bulge-Forming of Polycarbonate (PC) Sheet

2009 ◽  
Vol 16-19 ◽  
pp. 500-504
Author(s):  
Zhen Xiu Hou ◽  
Nan Zhang ◽  
En Ren Liu ◽  
Zhi Liu ◽  
An Feng ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Geometrical Shape ◽  
Longitudinal Stress ◽  
Large Area ◽  
Element Analysis ◽  
Blank Holder ◽  
Finite Element Software ◽  
Hot Gas ◽  
Double Curvature

To explore geometrical shape, stress distribution, strain distribution and wall thickness of product in the process of polycarbonate hot gas bulge forming, numerical simulation of 4mm PC double curvature and large-area workpiece with the chord 1050mm has been conducted by the finite element software DYNAFORM. The results indicate that the deformation of large-area workpiece starts from blank holder to sheet center, and the maximum latitudinal stress and longitudinal stress is located in the center of PC sheet. The maximum reducing rate is approximate to 6.4%. The experimental results fit well with the numerical simulation.

Temperature Field Calculation of Mass Concrete Anchor

2012 ◽  
Vol 166-169 ◽  
pp. 1141-1144
Author(s):  
Hai Tao Wan ◽  
Li Min Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Suspension Bridge ◽  
Field Calculation ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Finite Element Software

Gravity anchor is one of essential forced components of steady suspension bridge. The paper takes the example of the finite element numerical simulation of steady suspension bridge gravity anchor, main contents include: First, performance parameters of concrete and hydration heat of cement is collected, the one-fourth block of anchor model is established by large-scale general finite element software ANSYS. The process of establishing finite element analysis model includes the input of the model parameters, the boundary conditions set of finite element model, and the mesh of finite element analysis model. Then, the numerical simulation computation to temperature field of gravity anchor is carried by finite element software ANSYS. Finally, from the temperature field distribution curves, studying the temperature distribution rule of concrete pouring and drawing some conclusions.

The Influence of N Values on Sheet Metal Deep Drawing Based on Different Blank Holder Forces

2011 ◽  
Vol 418-420 ◽  
pp. 1364-1367
Author(s):  
Jian Qing Qian ◽  
Ji Ping Chen ◽  
Hai Fan Qian
Keyword(s):  
Finite Element ◽  
Sheet Metal ◽  
Deep Drawing ◽  
Drawing Ratio ◽  
Blank Holder Force ◽  
Limit Drawing Ratio ◽  
Blank Holder ◽  
N Value ◽  
Finite Element Software

The influence of hardening index n value at different holding forces on LDR of cylinder cup was simulated by the finite element software PAM-STAMP 2G. The results showed that the limit drawing ratio of the sheet metal decreased with the increase of the blank holder force. There was little influence of hardening index n value on the limit drawing ratio at smaller blank holder force. The influence of hardening index n value on the limit drawing ratio increased with the increase of the blank holder force. The hardening index n value could be increased to increase the limit drawing ratio when the blank holder force is large.

Tearing defect maps for the deep drawing of AISI 304 rectangular cups

2020 ◽  
Vol 62 (8) ◽  
pp. 769-774
Author(s):  
Pramote Koowattanasuchat ◽  
Numpon Mahayotsanun ◽  
Sasawat Mahabunphachai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Deep Drawing ◽  
Element Analysis ◽  
Final Thickness ◽  
Aisi 304 ◽  
Blank Holder ◽  
Rectangular Shape

Abstract This study proposes a method for integrating finite element analysis and response surface methodology to predict tearing locations in the deep drawing of a rectangular-shape AISI 304 cup. The finite element model was confirmed by a deep-drawing experiment with nitrogengas springs, and the finite element analysis results were in agreement. Moreover, the regression model was developed using response surface methodology to predict final thickness at various locations on the rectangular-shape deep-drawn cup based on 40 finite element cases containing varied blank holder forces. The maximum percentage of thinning values was obtained from the response surface methodology results. The relationships among the blank holder forces and the thinning values at different locations were then further developed. The maps of the predicted tearing locations were then obtained and directly corresponded to the number of locations the specific blank holder forces. These maps, as established, could be directly used in a closed-loop control system enabling tearing defects to be prevented or eliminated.

Finite Element Analysis of Main Stand of Ф140 Pipe Rolling Mill and Split Casting

2013 ◽  
Vol 690-693 ◽  
pp. 2327-2330
Author(s):  
Ming Bo Han ◽  
Li Fei Sun
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Rolling Mill ◽  
Analysis Model ◽  
Element Analysis ◽  
Pipe Rolling ◽  
Full Load ◽  
Finite Element Software ◽  
Theoretical Position ◽  
Technical Requirements

By using finite element software, the paper establishes the main stand analysis model of the Ф140 pipe rolling mill and provides the model analysis of main stand in cases of full load. Verify the design of main stand fully comply with the technical requirements .In this paper, it provides the theoretical position of split casting and welding method using electric slag welding.

The Numerical Simulation and Finite-Element Analysis of the Motor Vibration Problem Based on the Base Anchor Softening Layer

2013 ◽  
Vol 815 ◽  
pp. 860-867
Author(s):  
Yu Gu ◽  
Shao Xiong Li ◽  
Rui Li ◽  
Qiang Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Exciting Force ◽  
Element Analysis ◽  
Comparison Results ◽  
Inherent Frequency ◽  
Motor Model ◽  
Motor Vibration ◽  
Important Significance

Vibration results from situation when the inherent frequency close to the external exciting force during the operation of the motor, so accurate and effective calculation of the natural frequency of the motor has an important significance to damping noise. By numerical simulation model and the ANSYS finite element modal, the inherent frequencies were got of the motor and comparison results verify the effectiveness of the motor model. The effect of the modulus of elasticity of the softening layer between the motor and the ground to the inherent frequency was researched intensively, and puts forward related suggestions.

Dynamic Finite Element Analysis of a Cylindrical Roller Bearing

2011 ◽  
Vol 143-144 ◽  
pp. 437-442
Author(s):  
Bao Hong Tong ◽  
Yin Liu ◽  
Xiao Qian Sun ◽  
Xin Ming Cheng
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Roller Bearing ◽  
Element Analysis ◽  
Dynamic Finite Element ◽  
Dynamic Finite Element Analysis ◽  
Simulation Results ◽  
Cylindrical Roller Bearing ◽  
Cylindrical Roller

A dynamic finite element analysis model for cylindrical roller bearing is developed, and the complex stress distribution and dynamic contacting nature of the bearing are investigated carefully based on ANSYS/LS-DYNA. Numerical simulation results show that the stress would be bigger when the element contacting with the inner or outer ring than at other times, and the biggest stress would appear near the area that roller contacting with the inner ring. Phenomenon of stress concentration on the roller is found to be very obvious during the operating process of the bearing system. The stress distributions of different elements are uneven on the same side surface of roller in its axis direction. Numerical simulation results can give useful references for the design and analysis of rolling bearing.

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