APPLICATION OF SOLID ELEMENT IN IRONING SIMULATION AND OPTIMIZATION OF PROCESS PARAMETERS

2009 ◽  
Vol 06 (04) ◽  
pp. 485-500 ◽  
Author(s):  
JIANGPING XU ◽  
TING DU ◽  
YUQI LIU ◽  
ZHIBING ZHANG
Keyword(s):  
Process Parameters ◽  
Control Method ◽  
Maximum Load ◽  
Load Force ◽  
Viscous Damping ◽  
Forming Force ◽  
Simulation And Optimization ◽  
Optimization Of Process Parameters ◽  
Hourglass Control ◽  
Simulation Results

Based on viscous damping hourglass control method, a one-point integrated hexahedral finite element dynamic explicit algorithm is programmed and ironing process simulation has also been carried out. Simulation results with controlled hourglass algorithm shows that the hourglass control method is robust in this research and the setting of hourglass coefficient is analyzed. Furthermore, the reduction ratio R, friction coefficient μ between molds and blank, semi-angle α, which affect the maximum forming force, are discussed in detail. Simulation results show that the proper choice of those process parameters could obtain minimum maximum load force, thus effectively decrease moulds wear and lengthen moulds life.

scholarly journals Angle and Force Hybrid Control Method for Electrohydraulic Leveling System with Independent Metering

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Kailei Liu ◽  
Shaopeng Kang ◽  
Zhongliang Cao ◽  
Rongsheng Liu ◽  
Zhaoxuan Ding
Keyword(s):  
Pid Controller ◽  
Control Method ◽  
Hybrid Control ◽  
Control Function ◽  
Hydraulic Press ◽  
Load Force ◽  
Static Behavior ◽  
Eccentric Load ◽  
Simulation Results ◽  
Leveling Control

The electrohydraulic leveling system of the hydraulic press can realize automatic leveling control function. In order to eliminate the eccentric load force accurately, an electrohydraulic leveling system with independent metering is designed. Quasi-static behavior analysis of the leveling cylinders output forces performance is applied to the electrohydraulic leveling system with independent metering. The angle and force hybrid control method is proposed, and then the AMESim/Simulink cosimulation model is built. The HSIC controller and PID controller are used in the simulation, respectively. Simulation results show that both of the leveling angle control and leveling cylinders output forces control can be realized, simultaneously, and the HSIC controller has higher rapidity and smaller overshoot than the PID controller.

Simulation of Ironing Process for Bullet Case to Get Minimum Forming Force with Variation of Die Angle and Reduction Wall Thickness

2016 ◽  
Vol 836 ◽  
pp. 197-202 ◽  
Author(s):  
M. Nushron Ali Mukhtar ◽  
I. Made Londen Batan ◽  
Bambang Pramujati ◽  
Agus Sigit Pramono
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Process Parameters ◽  
Wall Thickness ◽  
Strength Calculation ◽  
Thickness Reduction ◽  
Material Strength ◽  
Outer Diameter ◽  
Forming Force ◽  
Simulation Results

This study described how the ironing process to manufacture 20 mm caliber bullet case. For this purpose, the first step is analyzing the process parameters, and then calculates the forces needed to make the formation of bullet case. Through the analysis of the process it is known, that the ironing process parameters most influential to the magnitude of forming force are the die angle α and the reduction of the wall thickness. In this study a simulation is conducted to determine a minimum required of forming force until the process successful. That means the required bullet case accordance with the determined specifications and geometry. The material used for bullet case caliber 20 mm is brass Cu30% Zn 70% early-shaped cup with 33.5 mm outer diameter, 3 mm thick and 37 mm high. Based on material strength calculation, the ironing force is determined with value of 50.01 kN. By using this value the maximum allowable wall reduction thickness in the ironing process is 26.7%. The simulation is carried out using finite element method on a variety of die angle such as α = 5°, 10°, 15°, 20° and 25° respectively. The simulation results show that the shell cannot through the die on each angle die. Similarly, in variation of reduction by 5%, 10%, 15%, 20% and 25%, the ironing process is also unsuccessful. However, by load of 138 kN, in the 26.7% reduction and at die angle α=5°, the ironing process to produce cylinder is successfully. Similarly by the same of wall thickness reduction, with force of 148 kN and the die angle of 10°, the ironing process is also successfully to fulfill the bullet case with a specified geometry.

Hydroforming Simulation and Experiment on Al 5083 T-Shapes

2010 ◽  
Vol 97-101 ◽  
pp. 2668-2671
Author(s):  
Xun Zhong Guo ◽  
Jie Tao ◽  
Zheng Yuan
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
Optimization Of Process Parameters ◽  
Hydroforming Process ◽  
Simulation And Experiment ◽  
Simulation Results ◽  
Thinning Rate ◽  
Practical Forming

The hydroforming process to manufacture Al 5083 T-shapes with desired protrusion height and uniform thinning rate was evaluated by means of numerical simulation in this work. The optimization of process parameters and the prediction of forming effect were then carried out. Subsequently, the practical forming was performed based on the simulation results. It was obvious that the simulation results agreed well with the experimental ones. In addition, the streamline on the surface which formed in the hydroforming process was observed in the experiment.

Computer Simulation and Optimization of Equal Channel Angular Extrusion of AZ31 Magnesium Alloy

2009 ◽  
Vol 610-613 ◽  
pp. 780-782 ◽  
Author(s):  
Hong Jun Hu ◽  
Ding Fei Zhang ◽  
Fu Sheng Pan
Keyword(s):  
Computer Simulation ◽  
Magnesium Alloy ◽  
Process Parameters ◽  
Equal Channel Angular Extrusion ◽  
Three Dimension ◽  
Simulation And Optimization ◽  
Magnesium Alloy Az31 ◽  
Wrought Magnesium Alloy ◽  
Simulation Results ◽  
Deformation Homogeneity

In order to study the influence of die structures and process parameters on ECAE for wrought magnesium alloy AZ31 and obtain optimized process parameters, the three-dimension(3D) new geometric models with different corner angles (90o,120o,135o) and with or without inner round fillets in the bottom die were designed. The simulation results showed that the loads of top dies declined mainly with the corner angles increasing and inner round fillets of the bottom dies manufactured, the bottom die with inner round corner and the corner angle of 90o was propitious to improve the plasticity and deformation homogeneity of the billets.

Optimization of Process Parameters for Production of Pectinase using Bacillus Subtilis MF447840.1

2019 ◽  
Vol 13 (1) ◽  
pp. 69-73 ◽  
Author(s):  
Ram Balak Mahto ◽  
Mukesh Yadav ◽  
Soumya Sasmal ◽  
Biswnath Bhunia
Keyword(s):  
Bacillus Subtilis ◽  
Process Parameters ◽  
Volume Ratio ◽  
Optimum Process ◽  
Agitation Rate ◽  
Fermentation Condition ◽  
Optimization Of Process Parameters ◽  
Food And Beverage ◽  
Pectinase Production ◽  
Sterile Product

Background: Pectinase enzyme has immense industrial prospects in the food and beverage industries. </P><P> Objective: In our investigation, we find out the optimum process parameters suitable for better pectinase generation by Bacillus subtilis MF447840.1 using submerged fermentation. </P><P> Method: 2% (OD600 nm = 0.2) of pure Bacillus subtilis MF447840.1 bacterial culture was inoculated in sterile product production media. The production media components used for this study were 1 g/l of pectin, 2 g/l of (NH4)2SO4, 1 g/l of NaCl, 0.25 g/l of K2HPO4, 0.25 g/l of KH2PO4 and 1 g/l of MgSO4 for pectinase generation. We reviewed all recent patents on pectinase production and utilization. The various process parameters were observed by changing one variable time method. </P><P> Results: The optimum fermentation condition of different parameters was noticed to be 5% inoculums, 25% volume ratio, temperature (37°C), pH (7.4) and agitation rate (120 rpm) following 4 days incubation. </P><P> Conclusion: Maximum pectinase generation was noticed as 345 ± 12.35 U following 4 days incubation.

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