Numerical Simulation of Springback of the Multi-Point Forming for Metal Plank after Using Elastic Cushion

2013 ◽  
Vol 473 ◽  
pp. 121-124 ◽  
Author(s):  
Ning Yao
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Sheet Forming ◽  
Shape Error ◽  
Finite Element Software ◽  
Element Group ◽  
Simulation Results ◽  
Elastic Cushion

Springback is a problem that must be solved in multi-point forming in this paper, finite element software ls-dyna was used to simulate plate stamping springback. 3mm thick elastic cushion inhibited dimple of sheet forming, but the use of elastic cushion and plate springback would lead to shape error. A method was proposed which modified the forming surface of element group in the Multi-point forming (MPF) by iterative ways according to the numerical simulation results. The accuracy of forming was improved after two compensation, it was proved that this method can compensate springback of the multi-point forming.

Numerical Simulation of the Kinetic Energy Projectile Oblique Penetration into the Concrete

2014 ◽  
Vol 989-994 ◽  
pp. 982-985
Author(s):  
Jun Chen ◽  
Xiao Jun Ye
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Kinetic Energy ◽  
Three Dimensional ◽  
Test Results ◽  
Destruction Process ◽  
3D Finite Element ◽  
Finite Element Software ◽  
Simulation Results ◽  
Target Characteristics

ANSYS-LS/DYNA 3D finite element software projectile penetrating concrete target three-dimensional numerical simulation , has been the target characteristics and destroy ballistic missile trajectory , velocity and acceleration and analyze penetration and the time between relationship , compared with the test results , the phenomenon is consistent with the simulation results. The results show that : the destruction process finite element software can better demonstrate concrete tests revealed the phenomenon can not be observed , estimated penetration depth and direction of the oblique penetration missile deflection .

Research on the Numerical Simulation of Hot Stamping for High Strength Steel

2014 ◽  
Vol 898 ◽  
pp. 136-139
Author(s):  
Chang Feng Men ◽  
Wen Wen Du ◽  
Cui Hong Han
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
High Strength Steel ◽  
Hot Stamping ◽  
High Strength ◽  
Nonlinear Finite Element ◽  
Weight Percentage ◽  
Finite Element Software ◽  
Simulation Results ◽  
Die Temperature

In order to research on the hot stamping property of high strength steel, the stamping forming of USIBOR1500P is simulated by the nonlinear finite element software Dynaform and Ansys/ls-dyna. The initial data simulated on USIBOR1500P is obtained by the hot tensile test. The simulation results show that the martensite weight percentage and Vickers hardness are in inverse proportion to stamping speed and initial die temperature.

Prediction of Collapse Area of Construction Materials for Cooling Tower with Different Cut Height Due to the Blasting Demolition

2016 ◽  
Vol 723 ◽  
pp. 801-806
Author(s):  
Tie Jun Tao ◽  
Lian Sheng Liu ◽  
En An Chi ◽  
Ming Sheng Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Cooling Tower ◽  
Construction Materials ◽  
Ground Vibration ◽  
Parallel Study ◽  
Finite Element Software ◽  
Dynamic Finite Element ◽  
Simulation Results

The effect of cut height on collapse area is simulated and analyzed by dynamic finite element software. Meanwhile, the simulated collapse processes of the cooling tower with different cut height were completed in a parallel study, the results of which are briefly introduced in this paper. The results show that: as the cut height increases, ground vibration on surrounding structures and collapse area of cooling tower decreases. At last, numerical simulation results were used in blasting project, which reduced hazard of collapse vibration and verify the scientific of this method.

scholarly journals Study of the Forming Characteristics of Small-Caliber Ammunition with Circumferential MEFP

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 891 ◽  
Author(s):  
Guangsong Ma ◽  
Guanglin He ◽  
Yukuan Liu ◽  
Yachao Guo
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Structural Parameters ◽  
Outer Wall ◽  
Diameter Ratio ◽  
Curvature Radius ◽  
Preliminary Design ◽  
Finite Element Software ◽  
Forming Characteristics ◽  
Simulation Results

To study the influence of the structural parameters of the ammunition liner of small-caliber ammunition on the forming characteristics of the projectile, an integrated circumferential multiple explosively formed projectile (MEFP) warhead with an integrated shell and the liner was initially designed, and the wall thickness of the liner is variable. LS-DYNA finite-element software is used to simulate the integral circumferential MEFP of the preliminary design, based on the numerical simulation results, the influence of the thickness at the center of the liner, and the curvature radius of the liner on the shape and velocity of the formed projectile. The numerical simulation results show that when the thickness of the center of the liner is constant and the curvature radius increases gradually, the velocity of the formed projectile decreases and the length: Diameter ratio of formed projectile decreases gradually. When the curvature radius of the liner remains unchanged, the velocity of the formed projectile decreases with the increase of the thickness of the center of the liner, and the shape of the formed projectile does not change significantly. The results show that when the design of integrating the shell and the liner was adopted for the integral circumferential MEFP warhead, the shape of the formed projectile is greatly affected by the curvature radius of the liner (curvature radius of inner and outer walls of the liner), but less by the thickness of the center of the liner. The velocity of the formed projectile is affected by the curvature radius of the inner and outer walls of the liner and the thickness of the center of the liner. Moreover, the influence of the thickness of the center of the liner on the velocity of the formed projectile is greater than that of the curvature radius of the outer wall of the liner.

Numerical Simulation for Thick-Walled Hollow Axle during Cross Wedge Rolling

2011 ◽  
Vol 337 ◽  
pp. 270-273 ◽  
Author(s):  
Yang Jiang ◽  
Bao Yu Wang ◽  
Zheng Huan Hu ◽  
Jian Guo Lin
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Finite Element ◽  
Numerical Model ◽  
Rolling Process ◽  
Cross Wedge Rolling ◽  
Finite Element Software ◽  
Temperature Distributions ◽  
Simulation Results ◽  
Deform 3D

The paper investigates a process of cross wedged rolling (CWR) for manufacturing thick-walled hollow axles. A finite element numerical model coupled deformation and heat transfer of CWR is established using commercial finite element software DEFORM-3D. The rolling process of hollow axle during CWR is simulated successfully. The stress, strain and temperature distributions of workpiece are obtained and analyzed. The simulation results show that forming thick-walled hollow axles through CWR is feasible.

Numerical Simulation and Analysis of Ironing Process for Deep Cup Shaped Workpiece

2013 ◽  
Vol 681 ◽  
pp. 191-194
Author(s):  
Li Li Huang ◽  
Xiao Yang Lu ◽  
Xiang Wei Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Theoretical Basis ◽  
Interface Friction ◽  
Finite Element Software ◽  
Forming Load ◽  
Deformation Velocity ◽  
Shaped Part ◽  
Simulation Results ◽  
Deform 3D

The numerical simulation of the ironing process of deep cup shaped part was conducted by finite element software Deform 3D. The influences of interface friction and deformation velocity on the forming load and blank damage were studied in this paper. The simulation results showed that the forming load and damage increased obviously with the increase of the friction between the blank and cavity die. The blank damage increased and the forming load decreased with the increase of deformation velocity. These conclusions provide a reliable theoretical basis for the optimization of the ironing process of deep cup shaped part.

Behaviors of Polyurethane Filled Double Skin Steel Tubular Members

2011 ◽  
Vol 94-96 ◽  
pp. 196-200
Author(s):  
Zhen Yuan Hang ◽  
Xu Feng Mi
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Finite Element ◽  
Axial Compression ◽  
Theoretical Basis ◽  
Nonlinear Finite Element ◽  
Work Processes ◽  
Finite Element Software ◽  
Double Skin ◽  
Simulation Results

Based on the nonlinear finite element software, the mechanical properties of polyurethane filled double skin steel tubular (PFDSST) members with different hoop coefficients and slenderness ratios under axial compression have been studied by nonlinear finite element software. On the basis of the researches on the numerical simulation results, it was summarized that the influences on stability, ductility and properties of the PFDSST members under axial compression, and then the work processes of the PFDSST members have been revealed deeply, the theoretical basis for the designs of the PFDSST members was established.

scholarly journals RETRACTED: Based on PRO/E Sheet Metal Product Design Simulation

2011 ◽  
Vol 467-469 ◽  
pp. 1357-1360
Author(s):  
Hong Bo Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Hydrostatic Pressure ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Explicit Finite Element ◽  
Finite Element Software ◽  
Element Simulation ◽  
Simulation Results

Numerical simulation is an effective method for predicting formability of metals, and the use of computer simulation enables a significant increase in the number of tool designs that can be tested before hard tools are manufactured. Based on dynamic explicit finite element software, finite element simulation of sheet metal forming was performed to investigate the applicability of applying hydrostatic pressure on blank in multi point discrete dies. Simulation results show that using the hydrostatic pressure on blank is apposite for the process of multi point discrete dies.

Seepage-Stress Analysis on Oilfield Based on Numerical Simulation

2012 ◽  
Vol 170-173 ◽  
pp. 1017-1020
Author(s):  
Jun Liu ◽  
Xing Feng Wang ◽  
Xue Ping Chang
Keyword(s):  
Numerical Simulation ◽  
Genetic Algorithm ◽  
Finite Element ◽  
Stress Field ◽  
Beam Element ◽  
Low Permeability ◽  
Finite Element Software ◽  
Casing Damage ◽  
Simulation Results ◽  
Stress Boundary

Using the finite element software ABAQUS, the stress field in one low permeability reservoir is investigated. Genetic algorithm is used to determine the initial stress boundary of the reservoir, seepage-stress element CPE4P in ABAQUS is used to model the rock and beam element B31 is used to model the well group. The numerical simulation results indicate that casing damage can be predicted effectively using the method in this paper.

Numerical Simulation Research of Equivalent Strain in Every Pass of H-Beam in Cogging Beam Blank

2013 ◽  
Vol 634-638 ◽  
pp. 3835-3839
Author(s):  
Lin Chen ◽  
Chen Xia Wu ◽  
Ke Xin Bi
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Compression Ratio ◽  
Equivalent Strain ◽  
Simulation Research ◽  
Finite Element Software ◽  
Performance Requirements ◽  
Simulation Results ◽  
H Beam ◽  
And Performance

In order to guarantee organization and performance requirements of H-beam, a certain compression ratio is needed from stock to products. This paper choose blank special-shaped billet, using DEFORM finite element software, simulated and analyzed change rule of H-beam equivalent strain when beam blank is cogging. Simulation results show that:The compression ratio is 10.78 from stock to products. The stock dimension meet requirements of from A hole to CCS rolling after BD cogging. The equivalent strain rule during the entire process of beam blank cogging is mainly focus waist and haunch joint.

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