Influence of Oblique Edge Blanking on the Online Punching Quality after Stretch Bending

2018 ◽  
Vol 385 ◽  
pp. 430-436
Author(s):  
Qin Xiang Xia ◽  
Teng Xu ◽  
Hu Bo ◽  
Hong Chen Zhang ◽  
Livan Fratini
Keyword(s):  
Single Peak ◽  
Finite Element Models ◽  
Appearance Quality ◽  
Software Comparison ◽  
Stretch Bending ◽  
Flat Edge ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D ◽  
Better Than

The oblique edge punching was proposed to reduce the surrounding sag failure occurred under the large punching force during online punching after stretch bending. The finite element models under three different kinds of punches were stablished and the punching processes were simulated by using the DEFORM-3D software. Comparison between the flat-edge punch and the oblique edge punches were realized, and the optimal height of the oblique edge of the unilateral bevelled punch and the single-peak bevelled punch were obtained. Three kinds of punches were designed based on the simulation results, and the experiments for manufacturing the upper strip of the automobile door frame by the online punching after stretch bending were carried out. The results show that the depth of the surrounding sag of punching can be reduced significantly and the appearance quality can be improved effectively by the oblique edge blanking. The effect to reduce the depth of surrounding sag failure by the unilateral bevelled punch is better than that by the single-peak bevelled punch, and the depth of surrounding sag failure on the side near the edge tip of the unilateral bevelled punch is smaller than that on the side away from the edge tip.

Study on Precision Forging Schemes of Hypoid Driving Gear

2012 ◽  
Vol 472-475 ◽  
pp. 692-695
Author(s):  
Jian Hua Wang ◽  
Fu Xiao Chen
Keyword(s):  
Equivalent Stress ◽  
Three Dimensional ◽  
Equivalent Strain ◽  
Precision Forging ◽  
Forming Technology ◽  
Blank Shape ◽  
Simulation Results ◽  
Three Dimensional Models ◽  
3D Software ◽  
Deform 3D

By analyzing the characteristics and forming technology of hypoid driving gear, it was suitable for adopting fully enclosed die forging principle to form the gear. Based on different forging methods, three kinds of blank shape and corresponding forming schemes were designed. The three dimensional models of blank and die were created by the UG software. The three forming schemes were simulated by the Deform-3D software. The simulation results of distribution of equivalent stress, distribution of equivalent strain and load-stroke curve were comparatively analyzed. Then the most reasonable scheme was chosen. At last, the rationality of numerical simulation can be further verified by the optimized scheme was proved by experiment.

Finite Element Simulation of Punch Shear during Hole Piercing in Auto Chain Components

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
K.S. Sekar ◽  
K. Sudhagar ◽  
S.N. Murugesan
Keyword(s):  
Fem Simulation ◽  
Steel Component ◽  
Element Simulation ◽  
Simulation Based ◽  
The Press ◽  
Metal Stamping ◽  
Punch Load ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D

The capabilities of presses are sometimes limited due to larger cutting force requirement for some sheet metal operations. Reducing the tonnage requirements for such operations will sometimes make the presses capable of doing such operations. FEM simulation can be a reliable tool in predicting the amount of tonnage required for the metal stamping operation. An attempt is taken in this study to analyse the behaviour of the hole piercing operation in an automobile chain part using DEFORM 3D software. The main focus is on the prediction of tonnage requirement with different shear methods on the piercing. Simulations were conducted with flat, single sheared, double sheared, reverse double sheared, convex sheared and concave sheared punches and analyzed for variations in the press load. The phenomena of piercing are also observed through the simulation based on AISI 1060 steel component used for automobile chain as inner plate. Simulation results showed that the shear angles provided on piercing punches will reduce the punch load significantly.

Research into the Effect of Speed Mismatch during Continuous Rolling on the Process Parameters

2021 ◽  
Vol 316 ◽  
pp. 208-213
Author(s):  
Sergey O. Nepryakhin ◽  
Olga V. Vodopyanova
Keyword(s):  
Rolling Process ◽  
Rolling Speed ◽  
Continuous Rolling ◽  
Technological Parameters ◽  
Wire Mill ◽  
Small Deviations ◽  
Simulation Results ◽  
Rolling Torque ◽  
3D Software ◽  
Deform 3D

The paper analyzes the influence of tension (dam) on the technological parameters of the rolling process (spreading, force and rolling torque). For the analysis, a model of continuous rolling in three adjacent stands was developed, using the Deform 3D software. The adequacy of the model was confirmed by comparing the experimental data from the small-section wire mill 150 and the simulation results. The error in determining the forming was 0.4%, and in determining the power parameters was 11%. Further, a computational experiment was planned, to identify the effect of mismatched of rolling speeds on technological parameters. According to the results of calculations, graphs of changes in technological parameters were constructed. It is established that, even small deviations of rolling speed from the matched mode lead to significant changes in technological parameters.

Graded Transitions Homogeneity for Ti-50.8%Ni Processed by ECAP

2014 ◽  
Vol 1082 ◽  
pp. 90-94
Author(s):  
Mohamed Osman ◽  
Dian Tao Zhang ◽  
Yun Xiang Tong ◽  
Yu Feng Zheng ◽  
Li Li
Keyword(s):  
Standard Deviation ◽  
Shape Memory Alloy ◽  
Vickers Microhardness ◽  
Angular Pressing ◽  
Simulation Results ◽  
3D Software ◽  
Deformation Homogeneity ◽  
Deform 3D ◽  
Inhomogeneity Index ◽  
Good Agreement

Ti-50.8%Ni shape memory alloy was subjected to four passes equal channel angular pressing (ECAP) with angle 120◦ via route Bc at 450°C. The deformation homogeneity was analyzed on planes across the thickness of the deformed sample by Deform-3D software. Two methods were used from the simulation model to quantify deformation homogeneity , including strain standard deviation (SSD) and inhomogeneity index (Ci). In addition, The deformation heterogeneity of ECAP was analyzed experimentally from microhardness inhomogeneity index ( HII) based on Vickers microhardness test results.In the present work, Ci and SSD had been testified to detect which one could give better results experimentally. It was demonstrated that the simulation results of SSD measurements were in good agreement with experimental results .

Research the Effect of Speed Mismatch during Continuous Rolling on the Plasticity Margin

2021 ◽  
Vol 410 ◽  
pp. 161-166
Author(s):  
Sergey O. Nepryakhin ◽  
Olga V. Vodopyanova
Keyword(s):  
Experimental Data ◽  
Computational Experiment ◽  
Rolling Speed ◽  
Continuous Rolling ◽  
Wire Mill ◽  
Stress Strain ◽  
Small Deviations ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D

The paper analyzes the influence of tension (dam) on the stress-strain stain and plasticity margin. For the analysis, a model of continuous rolling in three adjacent stands was developed using the Deform 3D software. The adequacy of the model was confirmed by comparing the experimental data from the small-section wire mill 150 and the simulation results. Further, a computational experiment was planned to identify the effect of mismatched of rolling speeds on stress-strain stain. It is shown that for small deviations of rolling speed from the matched mode, there is no significant change in the reserve plasticity along the specific trajectory of the particles movement.

scholarly journals Computer Simulation and Analysis of the Parameters of the Drawing Process of Thin Wire from the Alloy Pd-5Ni

2019 ◽  
Vol 805 ◽  
pp. 13-18
Author(s):  
Sergey Sidelnikov ◽  
Kristina Bindareva ◽  
Ekaterina Lopatina ◽  
Viktor Leonov ◽  
Denis Voroshilov ◽  
...  
Keyword(s):  
Software Package ◽  
Stable Process ◽  
Experimental Studies ◽  
Metal Alloys ◽  
Drawing Process ◽  
Thin Wire ◽  
Simulation Results ◽  
Increase In Productivity ◽  
3D Software ◽  
Deform 3D

This article represents the results of studies of the drawing thin wire from the alloy Pd-5Ni process. The studies used the software developed by the authors using the methods of calculating the drawing process and the computer model implemented in the DEFORM 3D software package. By way of calculation, a drawing route was determined, including 14 transitions, and the efforts of deforming the metal were found when producing wire with a diameter of 0.075. For this mode of deformation processing using the DEFORM 3D software package, we simulated the drawing process and established the temperature and stress distribution over the volume of the workpiece. The simulation results confirmed that the calculated safety factor for drawing is in the range of 2.85-3.43, which ensures a stable process of deformation of the metal without breaks and, as a consequence, an increase in productivity and yield of the suitable metal. Experimental studies have confirmed the adequacy of the developed model, so it can be used to analyze the process of drawing wire from other precious metal alloys. The results of the research are recommended to improve the production technology of thin wire from the alloy Pd-5Ni for the manufacture of catalytic gripping grids.

Analysis on Cupping Process of Cartridge Case without Heat Teatment Based on DEFORM-3D

2014 ◽  
Vol 912-914 ◽  
pp. 573-576 ◽  
Author(s):  
Jing Zhao ◽  
Zhong Hua Du ◽  
Jin Ku Zhao
Keyword(s):  
Heat Treatment ◽  
Research Method ◽  
Production Cost ◽  
Metal Flow ◽  
Forming Process ◽  
Increase Productivity ◽  
Simulation Results ◽  
Cartridge Case ◽  
3D Software ◽  
Deform 3D

To reduce the forming process of cartridge case, increase productivity and reduce production cost, this paper has analysed whether heat treatment is needed after cupping process of cartridge case by using DEFORM-3D software. Through comparing numerical simulation results of forming cartridge case after cupping process without heat treatment and with heat treatment, we obtain that large differences exist between them in forming effect and metal flow liquidity. Therefore, its inadvisable for cartridge case to go on the next process without heat treatment directly. The research method of this paper can effectively simulate the forming process of cartridge case. The improvement proposed for cartridge case forming can become a novel idea, and it also can provide a reference for future researchers.

The Compression Behavior Simulation of Aluminum Foams

2011 ◽  
Vol 239-242 ◽  
pp. 3244-3248
Author(s):  
Fang Wang ◽  
Lu Cai Wang ◽  
Yan Li Wang
Keyword(s):  
Regular Tetrahedron ◽  
Aluminum Foams ◽  
Compression Behavior ◽  
Kelvin Model ◽  
Behavior Simulation ◽  
Good Consistency ◽  
Strain Stress ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D

The compression behavior of open-cellular Aluminum foams was simulated using DEFORM-3D software. The structures of regular tetrahedron, octahedron and tetrakaidecahedron (Kelvin) model were developed separately. Simulation results show that the models have similar compression behavior. Then load-time curves and strain-stress curves have similar characteristics, the linear elasticity at low stresses followed by a long collapse plateau, truncated by a region of densification in which the stress rises steeply. Compared with experiment, the platform stress and the Young’ model of the Kelvin mold have good consistency within the error range.

Numerical Simulation of Different Clamping Modes on Stretch Forming Parts

2011 ◽  
Vol 189-193 ◽  
pp. 1922-1925 ◽  
Author(s):  
Xue Chen ◽  
Mine Zhe Li ◽  
Wen Zhi Fu ◽  
Zhong Yi Cai
Keyword(s):  
Finite Element ◽  
Thickness Distribution ◽  
Finite Element Models ◽  
Stretch Forming ◽  
Forming Quality ◽  
Finite Element Software ◽  
Simulation Results ◽  
Clamping Device ◽  
Better Than ◽  
Good Agreement

Three clamping devices of stretch forming machine were introduced, and the corresponding finite element models of the spherical parts were built by finite element software, the strain and thickness distribution of the forming parts were comparatively analyzed. The simulation results show that strain and thickness distribution of the forming parts with the multiple discrete gripper clamping mode are well-proportioned, its forming quality gets better than that with the whole flat gripper and adjustable curved gripper clamping modes. The experiment was performed and a typical spherical parts was formed with the multiple discrete gripper clamping mode. The experimental results are in good agreement with simulation results, which proves feasibility and practicability of the multiple discrete gripper clamping device of stretch forming machine.

The Numerical Simulation of Decarburization of 60Si2CrVA in Heat Treatment by DEFORM-3D and the Research of Practical Application

2011 ◽  
Vol 189-193 ◽  
pp. 4207-4211 ◽  
Author(s):  
Liang Gang Dai ◽  
Rong Fa Chen ◽  
Xian Liang Zhang ◽  
Rui Zhu ◽  
Tao Liu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Heat Treatment ◽  
Process Parameters ◽  
Spring Steel ◽  
Practical Application ◽  
Practical Guide ◽  
Simulation Results ◽  
3D Software ◽  
Deform 3D

In according to the DEFORM-3D software, we simulated the decarburization depth of the 60Si2CrVA spring steel in heat treatment, optimized the process parameters with the simulation results. The result of the research illustrated that the actual decarburization depth is consistent with the simulation result, which demonstrate DEFORM-3D has a practical guide for the process of heat treatment.

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