FE Simulation of Vacuum Hot Bulge Forming Process of BT20 Ti-Alloy Cylindrical Workpiece

2008 ◽  
Vol 392-394 ◽  
pp. 366-369
Author(s):  
Ming Wei Wang ◽  
Li Wen Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Heating Temperature ◽  
Radiation Heat Transfer ◽  
Element Model ◽  
Ti Alloy ◽  
Forming Process ◽  
Relaxation Theory ◽  
Finite Element Software ◽  
Cylindrical Workpiece

The vacuum hot bulge forming has been used in aerospace industry to manufacture cylindrical workpiece with improved mechanical properties and reduced fabrication cost. Vacuum hot bulge forming is based on the material soften and the stress relaxation theory. Different from other metal forming techniques, deformation of the workpiece takes place well below yield point and the amount of plastic deformation is directly relaxed to heating temperature and holding time. In this paper, a two-dimension thermo-mechanical coupled finite element model was developed. In this model, nonlinear radiation heat transfer and thermal physical properties of material depending on temperature were considered. This paper carried out numerical simulation of vacuum hot bulge forming of BT20 Ti-alloy cylindrical workpiece by using finite element software MSC.Marc. The temperature field, deformation field and stress field of hot bulge forming of BT20 Ti-alloy cylindrical workpiece were calculated. Numerical simulation results were accorded with experimental ones, which provided for the practice production as theory bases.

Finite Element Simulation of Vacuum Hot Bulge Forming of Titanium Alloy Cylindrical Workpiece

2011 ◽  
Vol 675-677 ◽  
pp. 921-924 ◽  
Author(s):  
Ming Wei Wang ◽  
Chun Yan Wang ◽  
Li Wen Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Titanium Alloy ◽  
Finite Element Simulation ◽  
Process Parameters ◽  
Fe Model ◽  
Analysis Software ◽  
Forming Process ◽  
Element Simulation ◽  
Cylindrical Workpiece

Vacuum hot bulge forming (VHBF) is becoming an increasingly important manufacturing process for titanium alloy cylindrical workpiece in the aerospace industries. Finite element simulation is an essential tool for the specification of process parameters. In this paper, a two-dimensional nonlinear thermo-mechanical couple FE model was established. Numerical simulation of vacuum hot bulge forming of titanium alloy cylindrical workpiece was carried out using FE analysis software MSC.Marc. The effects of process parameter on vacuum hot bulge forming of BT20 titanium alloy cylindrical workpiece was analyzed by numerical simulation. The proposed an optimized vacuum hot bulge forming process parameters and die size. And the corresponding experiments were carried out. The simulated results agreed well with the experimental results.

Finite Element Simulation of Vacuum Hot Bulge Forming Process of Reactor Coolant Pump Rotor-Can

2011 ◽  
Vol 675-677 ◽  
pp. 909-912 ◽  
Author(s):  
Zhi Zhu ◽  
Li Wen Zhang ◽  
Dong Jiang Wu
Keyword(s):  
Finite Element ◽  
Physical And Mechanical Properties ◽  
Element Model ◽  
Forming Process ◽  
Coolant Pump ◽  
Creep Properties ◽  
Finite Element Software ◽  
Element Simulation ◽  
Properties Of Materials ◽  
Future Work

In this paper, a 2-D nonlinear thermo-mechanical coupled finite element model was developed to simulate the vacuum hot bulge forming process of rotor-can with the aid of finite element software MSC.Marc. Thermal physical and mechanical properties of materials vary with temperature in the model. In addition, the effects of high temperature creep properties of materials on the vacuum hot bulge forming process of rotor-can were considered. The temperature field, the stress-strain field and the displacement field of rotor-can during vacuum hot bulge forming process were calculated. This work is beneficial to understand the vacuum hot bulge forming process of rotor-can and lays a good foundation for future work.

The Contact Simulation of CTP Imaging Drum and Plate on ANSYS

2012 ◽  
Vol 151 ◽  
pp. 484-489 ◽  
Author(s):  
Jie Fang Xing ◽  
Jie Zhang ◽  
Lu Jun He
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Model ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Element Model ◽  
Basic Knowledge ◽  
Dynamic Design ◽  
Design And Optimization ◽  
Finite Element Software

Introduce some basic knowledge, methods and theory of using the finite element software ANSYS to carry out contact analysis, and then establish the contact simulation analysis finite element model for CTP imaging drum and plate by using the software ANSYS. A numerical simulation analysis on the imaging drum and the plate indicates that the analysis results are consistent with the experimental results, so as to lay the foundation for the reliability and stability of dynamic design and optimization design of CTP imaging drum.

Numerical Simulation for the Multi-Point Incremental Forming Process

2015 ◽  
Vol 775 ◽  
pp. 219-223
Author(s):  
Wan Mian Yang ◽  
Yuan Xin Luo ◽  
Zhi Fang Liu ◽  
Ru Xu Du
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Model ◽  
Sheet Metal ◽  
Incremental Forming ◽  
Element Model ◽  
Sheet Metals ◽  
Forming Force ◽  
Forming Process ◽  
Thickness Change

Multi-point forming process has been developed to shape the sheet metal with bidirectional curvature. However, the forming force usually climbs too high so that the dimension of the forming machine should be designed to meet it. To solve this problem, the multi-point incremental forming (MPIF) process was proposed in this paper. First, the principle of this new forming process was introduced. Then, the experimental device was designed. Next, the MPIF process was simulated by a finite element model. The forming effects including displacements, thickness, and curvatures were visualized and discussed in detail. It was found that there is no obvious thickness change during the forming process. The advantage of this forming process is that the shape of the sheet metals adaptable and controllable with small forming force.

Numerical Simulation and Test Research of Continuous Flexible Forming Process for the Spherical Parts

2011 ◽  
Vol 291-294 ◽  
pp. 269-272
Author(s):  
Ying Wu Lan ◽  
Zhong Yi Cai ◽  
Ming Zhe Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Longitudinal Deformation ◽  
Forming Process ◽  
Flexible Forming ◽  
Sensing System ◽  
Flexible Forming Process ◽  
The Finite Element Model

The deformation of sheet metal in the continuous flexible forming (CFF) process is complex and the formed result is affected by many factors. In this paper, the finite element model of CFF was founded and the forming processes of spherical parts were simulated with the software ABAQUS. The interaction between transversal deformation and longitudinal deformation in the CFF process is analyzed. Based on results of numerical simulation and forming tests, the process parameters of CFF is revised, and formed surface is measured by three dimensional sensing system, the measured results indicate the precision of formed parts are satisfactory.

Study on Creep Deformation of Reactor Coolant Pump Rotor-Can during Vacuum Hot Bulge Forming Process

2011 ◽  
Vol 189-193 ◽  
pp. 2415-2420 ◽  
Author(s):  
Zhi Zhu ◽  
Li Wen Zhang ◽  
Guan Yu Song ◽  
Dong Jiang Wu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Creep Deformation ◽  
Element Model ◽  
Holding Time ◽  
Time Range ◽  
Forming Process ◽  
Coolant Pump ◽  
Finite Element Software ◽  
Relaxation Experiments

In this paper, a two-dimensional nonlinear thermo-mechanical coupled finite element model was developed to simulate the vacuum hot bulge forming process of rotor-can with the aid of finite element software msc.marc. A set of stress relaxation experiments were conducted to test the high temperature creep properties of hastelloy c-276 and the creep law of material was defined. Then, the finite element model was used to study creep deformation of rotor-can during vacuum hot bulge forming process. As a result, the temperature field and the stress-strain field are calculated and analyzed. Furthermore, the effects of holding temperature and holding time on creep deformation are also investigated. The optimal holding time range for the vacuum hot bulge forming process of rotor-can is from 2h to 3h.

Numerical Simulation on Spinning Forming Process of Automotive Wheel Rim

2011 ◽  
Vol 704-705 ◽  
pp. 1458-1464
Author(s):  
Da Sen Bi ◽  
Guang Yang ◽  
Liang Chu ◽  
Jian Zhang ◽  
Zhi Hua Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Technological Parameter ◽  
Reference Data ◽  
Forming Process ◽  
Finite Element Software ◽  
Wheel Rim ◽  
Spinning Process ◽  
Deform 3D

In this paper, the spinning process of automotive wheel rim is simulated with the finite element software DEFORM-3D. The forming of the automotive wheel rim based on finite element method is completed by the improvement of the spinning process. it can be divided into three different stages: spinning stage, flattening stage and shaping stage. The reference data for technological parameter of spinning process is achieved.The results are useful to the further research of the spinning process of automotive wheel rim.

scholarly journals Numerical Simulation of Fatigue Performance of Diaphragm of Large-Span Bridge Orthotropic Deck

Complexity ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-19
Author(s):  
Hui Li ◽  
Bo Zhao ◽  
Han Zhu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Fatigue Life ◽  
Finite Element Model ◽  
Element Model ◽  
Life Assessment ◽  
Steel Bridge ◽  
Large Span ◽  
Finite Element Software ◽  
Fatigue Life Assessment

Under traffic loads, orthotropic steel bridge slabs suffer from an obvious fatigue problem. In particular, fatigue cracking of diaphragms seriously affects application and development of orthotropic bridge slabs. In the paper, based on cracking status quo of an orthotropic deck diaphragm of a large-span bridge, experimental tests were formulated to test stress distribution states of the diaphragm. The finite element software ABAQUS was used to establish a finite element model of the orthotropic deck diaphragm; numerical simulation was conducted on the basis of the experiments. Simulation results were compared with experimental results, so correctness of the finite element model was verified. Finally, Local Strain Approach (LSA) and Theory of Critical Distance (TCD) were used to conduct life assessment of the orthotropic deck diaphragms, and applicability of two methods was discussed. In this way, a fatigue life assessment method with high accuracy and good operability was provided for fatigue life assessment of orthotropic deck diaphragms.

The Finite Element Simulation of Disc Cutter of Different Diameter Breaking Rock

2013 ◽  
Vol 791-793 ◽  
pp. 742-745 ◽  
Author(s):  
An Ning Zhang ◽  
Zhao Feng Zhu ◽  
Feng Zhu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Element Model ◽  
Rock Breaking ◽  
Disc Cutter ◽  
Finite Element Software ◽  
Disc Cutters ◽  
Element Simulation ◽  
Breaking Mechanism ◽  
Different Depths

In this paper, finite element software ANSYS is used to simulate a process of disc cutters of different diameter breaking rock, get the curves of the load of disc cutter of different diameter breaking rock and the curves of the stress exerting on the cutters when the disc cutters cutting different depth. According to the rock breaking mechanism of disc cutter, and established five kinds of disc cutter of different diameter broken rock finite element model, and the numerical simulation was carried out. The loads of disc cutters of different diameter breaking rock and the stress exerting on the cutters are different when the disc cutters cutting different depths. According to the result of the analysis, draw the curve graph of the load of disc cutter breaking rock and the stress exerting on the cutters when the disc cutters of different diameter cutting different depth. According to the curve diagram, the load of disc cutter of different diameter cutting a certain depth and the stress of exerting on the disc cutters can be gotten. The simulative result is instructive for improving the design of disc cutter parameters and improving the development efficiency.

scholarly journals Numerical Analysis on the Seismic Performance of Plane Irregular Structure Based on ABAQUS

2020 ◽  
Vol 4 (4) ◽  
Author(s):  
Lina Zong ◽  
Feng Xu ◽  
Wei Yuan ◽  
Xiaolei Ji
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Seismic Performance ◽  
Shaking Table Test ◽  
Shell Element ◽  
Element Model ◽  
Shaking Table ◽  
Analysis Model ◽  
Finite Element Software ◽  
Open Hole

Rod element and shell element were used in finite element software ABAQUS to establish dynamic elastic-plastic analysis model of the structure, the seismic performance of an irregular plane complex overrun structure numerical simulation, the structure was calculated under different input level and displacement response of the acceleration response, and analyses the force of the wear layer column and the floor of the open hole stress level. The results were compared with the shaking table test to verify the accuracy of the numerical simulation results. The results of numerical calculation were basically consistent with the experimental results, and the finite element model basically reflected the response of the structure under the simulated earthquake.

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