Effects of Die Tooth Profile on Forming Helical Tooth Shaft in Cross Wedge Rolling

2013 ◽  
Vol 274 ◽  
pp. 165-169 ◽  
Author(s):  
Hua Jun Yan ◽  
Jin Ping Liu ◽  
Zheng Huan Hu ◽  
Peng Biao Han ◽  
Hao En Mao ◽  
...  
Keyword(s):  
Tooth Profile ◽  
Analysis Software ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Element Analysis ◽  
Rolling Experiment ◽  
Forming Characteristics ◽  
Deform 3D ◽  
Material Saving ◽  
Good Agreement

The study on forming helical tooth shaft processes in cross wedge rolling can contribute to the advantages of material-saving and efficient. Die tooth profile is an important process parameter of cross wedge rolling helical tooth shaft. Three kinds of forming process of die helical teeth were simulated by DEFORM-3D finite element analysis software to analyze three different die helical tooth. According to the tooth forming characteristics, the effects of three kinds of die tooth profile on forming of a polled piece were analyzed. When rolling a polled piece using the die with the same addendum width, it is convenient for die processing and the effect of polled piece forming is better; when using the die with the narrow front and gradually wider rear, the defects of uneven tooth bottom and larger pitch may happen. The rolling experiment was made by using the die with the same width at the tooth bottom. The results are in good agreement with the simulation. Therefore, we should use the die with unchanged addendum width, tooth height and the sidewall proportional increased when designing the die.

Design and Optimization of Honeycomb Corrugated Chaff Forming Roller

2014 ◽  
Vol 597 ◽  
pp. 213-218
Author(s):  
Xiao Ping Yang ◽  
Bo Zhong ◽  
Chang Jie Luo
Keyword(s):  
Analysis Software ◽  
Forming Process ◽  
Element Analysis ◽  
Time Curve ◽  
Forming Quality ◽  
Design And Optimization ◽  
Number Of Teeth ◽  
Stress Contour ◽  
Forming Characteristics ◽  
Good Agreement

Abstract. By analyzing the material properties and forming characteristics of the 0.8mm length side hexagon honeycomb corrugated chaff , we studied forming roller’s design and optimization while making corrugated chaffs used forming method and focus on the influence of the chamfer of teeth top edge and number of teeth to forming quality at the corrugated chaff corner .We used finite element analysis software ANSYS / LS-DYNA to simulate the forming process of corrugated chaff , studied the stress contour and stress-time curve of typical element, found the optimal chamfer of teeth top edge and number of teeth, then we used the designed forming roller to verify the effect of chaff forming . By comparison experimental and simulation results,we found good agreement between the two, when the chamfer of teeth top edge dj = 0.08mm, number of teeth z = 40, the chaff has the best forming quality .

The Strain Analysis at the Broadening Stage of the Hollow Railway Axle by Multi-Wedge Cross Wedge Rolling

2014 ◽  
Vol 494-495 ◽  
pp. 457-460 ◽  
Author(s):  
Bin Hu ◽  
Xue Dao Shu ◽  
Peng Hui Yu ◽  
Wen Fei Peng
Keyword(s):  
Production Efficiency ◽  
Strain Analysis ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Element Analysis ◽  
Forming Mechanism ◽  
Railway Axle ◽  
The Finite Element Analysis ◽  
Scientific Significance ◽  
Deform 3D

The paper is based on the newest hollow railway axle, which utilizes the Pro/E designed multi-wedge cross wedge rolling (MCWR) model, utilizes the finite element analysis software DEFORM-3D to complete the numerical simulation about the whole stage of the hollow railway axle forming process, and analyzes the strain rule at the broadening stage of the hollow railway axle, especially conducts a detailed research on forming character into the strain rule at the multi-wedge transition stage, and finally gets the strain forming mechanism of the hollow railway axle at the broadening stage. The result of the research on the strain rule poses great scientific significance on enhancing the product quality and the production efficiency of the hollow railway axle, and improving the theory of multi-wedge cross wedge rolling.

The Research on the Generated Mechanism about the End Concavity of Shaft in the Closed Type of Cross Wedge Rolling

2015 ◽  
Vol 1095 ◽  
pp. 888-893 ◽  
Author(s):  
Ji Dong Ma ◽  
Chang Shu ◽  
Bao Shou Sun ◽  
Cheng Chao ◽  
Chao Cheng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Software ◽  
Cross Wedge Rolling ◽  
Rigid Plastic ◽  
Element Analysis ◽  
Closed Type ◽  
Theoretical Significance ◽  
Material Utilization ◽  
Deform 3D

To further improve the material utilization in cross wedge rolling, the paper simulated the forming of closed cross wedge rolling through DEFORM-3D, a rigid-plastic finite element analysis software, and analyzed the distribution and changing rule on the fields of strain and displacement in the parts rolling. Then the paper clarified the generated mechanism about the end concavity of shaft in the closed type of cross wedge rolling, which has great theoretical significance and engineering applied value in controlling and decreasing the end concavity in closed type cross wedge rolling and improving the parts’ end quality.

Analysis on Temperature Field of Work-Piece during Cross Wedge Rolling

2011 ◽  
Vol 230-232 ◽  
pp. 352-356
Author(s):  
Wen Ke Liu ◽  
Kang Sheng Zhang ◽  
Zheng Huan Hu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Metal Flow ◽  
Work Piece ◽  
Contact Deformation ◽  
Cross Wedge Rolling ◽  
Forming Process ◽  
Rigid Plastic ◽  
Finite Element Software ◽  
Deform 3D

Based on the rigid-plastic deformation finite element method and the heat transfer theories, the forming process of cross wedge rolling was simulated with the finite element software DEFORM-3D. The temperature field of the rolled piece during the forming process was analyzed. The results show that the temperature gradient in the outer of the work-piece is sometimes very large and temperature near the contact deformation zone is the lowest while temperature near the center of the rolled-piece keeps relatively stable and even rises slightly. Research results provide a basis for further study on metal flow and accurate shaping of work-piece during cross wedge rolling.

Process Optimization for Suction Plastic Forming of In-Mold Decoration Plastic Sheet with CAE

2010 ◽  
Vol 102-104 ◽  
pp. 74-78
Author(s):  
Bin Gao ◽  
Xiu Rong Nan ◽  
Bai Zhong Wu
Keyword(s):  
Process Optimization ◽  
Thin Shell ◽  
Optimization Methods ◽  
Analysis Software ◽  
Optimization Scheme ◽  
Forming Process ◽  
Element Analysis ◽  
Plastic Sheet ◽  
Mesh Model ◽  
Plastic Forming

The suction plastic forming process for in-mold decoration plastic sheet has been the best process for thin-shell plastic exterior decoration parts. But the suction plastic forming products still suffers from the uneven thickness. Based on the general finite element analysis software POLYFLOW for viscoelastic fluid, a set of optimization methods for suction plastic forming process of in-mold decoration plastic sheet is introduced in this paper to reduce the uneven level of thickness. These methods include establishing process optimization scheme, building mesh model, selecting the material constitutive model and determining its parameters, imposing boundary conditions and blowing pressure, and applying the mold movement. Finally, the optimized suction plastic forming process is used to produce the in-mold decoration plastic rear bumper sample of an automobile, and the results show that optimized process is effective and applicable.

scholarly journals Finite Element Analysis of Stretch Forming of an Open Profile Made of Ultra-High Strength Martensitic MS1500 Steel

2021 ◽  
Author(s):  
Mehmet Okan Görtan ◽  
Ümit Türkmen
Keyword(s):  
Finite Element ◽  
High Strength ◽  
Roll Forming ◽  
Sheet Metals ◽  
Stretch Forming ◽  
Forming Process ◽  
Element Analysis ◽  
Open Profile ◽  
Fe Simulations ◽  
Forming Characteristics

Stretch forming process is primarily used for generating curved structures from sheet metals such as car body panels or aircraft fuselage panels. Although there are large number of studies about stretch forming, these investigations focus mainly on flat sheet metals. However, various parts especially in the automotive industry, such as passenger car fenders are first preformed to a profile and afterwards stretch formed to generate desired final geometry. Moreover, as a consequence of weight reduction activities, these fender parts are usually made of ultra-high strength steels (UHSS) in the last two years. In the current study, stretch forming characteristics of an open profile made of martensitic UHSS (MS1500) are investigated using finite elements method (FEM). Used geometry was an asymmetrical hat profile which was preformed using roll forming prior to stretch forming. Mechanical properties of the material used is characterized using tensile test and modeled using Swift isotropic strain hardening rule. Strain and stress distribution along the bend section, geometry and springback in the final part as well as forming force have been investigated using finite element (FE) simulations. A twist has been observed in the final product along its longitudinal axis. To validate the FE results, experiments have been conducted. Twist problem is also detected in the manufactured samples. The amount of springback in produced part was similar to the experiments. It is found that FE simulations can model stretch forming process of open profiles accurately.

Quadruple-Arc Gear Tooth Profile Parameterize Optimization Based on ANSYS

2014 ◽  
Vol 889-890 ◽  
pp. 119-124
Author(s):  
Zhong Yi Ren
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Carrying Capacity ◽  
Gear Tooth ◽  
Tooth Profile ◽  
Analysis Software ◽  
Element Analysis

In this paper, quadruple-arc gear tooth profile parameters are optimized further by finite element analysis software ANSYS, and acquired a group of optimized tooth profile parameters. Which can improve the quadruple-arc gear carrying capacity, and provide a theory for design and calculation of quadruple-arc gear.

ST14 Material Stamping Process Applications of Finite Element Analysis

2013 ◽  
Vol 711 ◽  
pp. 214-218
Author(s):  
Xiao Jiang Yuan ◽  
Qiu Ju Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Structure ◽  
Analysis Software ◽  
Forming Process ◽  
Element Analysis ◽  
Stamping Process ◽  
Back Door ◽  
Material Forming ◽  
Process Structure

ST14 material around the back door window frames of the front bracket parts for the carrier, and to AutoForm stamping process finite element analysis software as a platform for ST14 experience of the material structure process simulation of material forming process, the analysis of the parts stamping process defects through repeated amendments of Part Process structure, to achieve the purpose of stamping process defects.

Experiment and Numerical Simulation on Non-Magnetic Prestressed Beam

2017 ◽  
Vol 894 ◽  
pp. 1-9
Author(s):  
Shi Yong Jiang ◽  
Wei Fei ◽  
Wei Lai Yao ◽  
Xue Yang Li
Keyword(s):  
Numerical Simulation ◽  
Prestressed Concrete ◽  
Concrete Beam ◽  
Ultimate Load ◽  
Analysis Software ◽  
Pure Bending ◽  
Element Analysis ◽  
Prestressed Beam ◽  
Good Agreement ◽  
Section Form

In order to meet demanding of non-magnetic, changing the reinforcement ratio, the degree of prestress and cross section form, four partially prestressed concrete beam (3 T shape section, 1 rectangle section) were made with CFRP as longitudinal reinforcement and stirrup. The results show that: the pure bending sections of the test beams conform the plane-section assumption; the beams with bigger rate of reinforcement or with stronger prestress tends to appear more cracks with smaller spacing and width, also their cracking load were higher with relatively lesser deflection. The cracking load and ultimate load of T-shape beam are slightly larger than the rectangular beam’s, but their deflections are similar nearly. Based on experimental research, nonlinear finite element analysis software ANSYS was utilized to establish the model, the results of numerical simulation and experiments showed good agreement.

The Analysis of the Mechanics Performance about GFRP Tube Confined Concrete Short Column under the Axial Compression

2016 ◽  
Vol 860 ◽  
pp. 160-165 ◽  
Author(s):  
Zhi Gang Song ◽  
Cheng Fan
Keyword(s):  
Axial Compression ◽  
Concrete Strength ◽  
Analysis Software ◽  
Element Analysis ◽  
Composite Columns ◽  
Compression Performance ◽  
Mechanics Performance ◽  
Winding Angle ◽  
Core Concrete ◽  
Good Agreement

In order to study the axial compression performance of GFRP tube composite columns filled with concrete and better applied to engineering, the influence of different winding angle of GFRP tube, thickness of GFRP tube, concrete strength and the containing rate of steel are simulated by using finite element analysis software ABAQUS when the column under the axial compression ,The results show that: the numerical results are in good agreement with the experimental results; reduced GFRP tube winding angle, increasing the GFRP tube thickness, improve the core concrete strength and an increase in steel containing rate could increase the bearing capacity of columns.

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