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.

Research on the Optimal Disc Cutter Spacing for Rock-Breaking Based on ANSYS

2014 ◽  
Vol 664 ◽  
pp. 143-147
Author(s):  
Yan Li ◽  
Ke Zhang ◽  
Jian Sun ◽  
Hong Sun ◽  
Zi Nan Wang
Keyword(s):  
Finite Element ◽  
Rock Breaking ◽  
Rock Fragmentation ◽  
Cutting Process ◽  
Disc Cutter ◽  
Rock Stress ◽  
Fragmentation Efficiency ◽  
Finite Element Software ◽  
Disc Cutters ◽  
Cutter Spacing

Objective: To study the influence of disc cutter spacing on rock fragmentation efficiency and optimize cutter layout and improve the efficiency of disc cutter. Method: ANSYS, a finite element software was used to simulate double disc cutter cutting process. Result: Find a good corresponding relationship between penetration and cutter spacing. At the process of sandstone, if disc cutter spacing as 54 ~ 55 mm, rock crushing as the largest and rock fragmentation efficiency is the highest; with the penetration of 10 mm. If disc cutter spacing as 66~68.5mm, rock crushing as the largest and rock fragmentation efficiency is the highest with the penetration of 15 mm. Changing the cutter spacing and penetration, rock stress and broken degree will also change. Conclusion: Double disc cutters change within the range of best cutter spacing, cutter spacing is proportional to the rock crushing. If the cutter distance is greater than the best cutter spacing, the ledge will be appeared. For one type of rocks, the penetration would have some effects on the optimal cutter spacing. If the penetration increases, the optimal cutter spacing increases gradually, at the time of other construction parameters unchanged.

A pragmatic approach for the evaluation of depth-sensing indentation in the self-similar regime

2021 ◽  
pp. 1-24
Author(s):  
Hamidreza Mahdavi ◽  
Konstantinos Poulios ◽  
Christian F. Niordson
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Depth Sensing ◽  
Finite Element Software ◽  
Element Simulation ◽  
Unique Material ◽  
Reverse Analysis ◽  
Supplementary Material ◽  
Two Parameters ◽  
Force Displacement

Abstract This work evaluates and revisits elements from the depth-sensing indentation literature by means of carefully chosen practical indentation cases, simulated numerically and compared to experiments. The aim is to close a series of debated subjects, which constitute major sources of inaccuracies in the evaluation of depth-sensing indentation data in practice. Firstly, own examples and references from the literature are presented in order to demonstrate how crucial self-similarity detection and blunting distance compensation are, for establishing a rigorous link between experiments and simple sharp-indenter models. Moreover, it is demonstrated, once again, in terms of clear and practical examples, that no more than two parameters are necessary to achieve an excellent match between a sharp indenter finite element simulation and experimental force-displacement data. The clear conclusion is that reverse analysis methods promising to deliver a set of three unique material parameters from depth-sensing indentation cannot be reliable. Lastly, in light of the broad availability of modern finite element software, we also suggest to avoid the rigid indenter approximation, as it is shown to lead to unnecessary inaccuracies. All conclusions from the critical literature review performed lead to a new semi-analytical reverse analysis method, based on available dimensionless functions from the literature and a calibration against case specific finite element simulations. Implementations of the finite element model employed are released as supplementary material, for two major finite element software packages.

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.

Distribution Law of Excavating Load of TBM Disc Cutter and Cutterhead

2014 ◽  
Vol 615 ◽  
pp. 22-26
Author(s):  
Xiang Heng Zhu ◽  
Yi Min Xia ◽  
Tao Ouyang ◽  
Kai Yang
Keyword(s):  
Yield Criterion ◽  
Tunnel Boring Machine ◽  
Element Model ◽  
Rock Breaking ◽  
Disc Cutter ◽  
Distribution Law ◽  
Disc Cutters ◽  
Lateral Forces ◽  
Simulation Results ◽  
Thrust And Torque

Cutterheads and disc cutters are the key components of Tunnel Boring Machine (TBM) used to fulfill the rock-breaking task. In order to study the variation and distribution law of cutting forces induced by disc cutters on TBM cutterhead, a finite element model of rock-breaking process is established based on the extended Drucker-Prager yield criterion for rock and then the excavating process of cutterhead is simulated. The simulation results show that: in the rock fragmentation process, the rock-breaking forces are step changing; with the increase of installation radius, the vertical forces of inner and face cutters increase, while the lateral forces decrease; with the increase of installation angle, the vertical forces of edge disc cutters decrease, while the lateral forces increase; the mean total thrust and torque of cutterhead are 5418.2 kN and 1624.4 kN·m respectively, the simulation results are verified by engineering data.

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.

Thermal Stress Analysis of Photovoltaic Hollow Glass Based on ANSYS

2013 ◽  
Vol 544 ◽  
pp. 339-342 ◽  
Author(s):  
Wei Hong Li ◽  
Cong Li ◽  
Yan Qiu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Thermal Stress ◽  
Structural Analysis ◽  
Finite Element Simulation ◽  
Glass Plate ◽  
Finite Element Software ◽  
Element Simulation ◽  
Temperature Load ◽  
Method Analysis

This article through to hollow photovoltaic glass service in the process of temperature test, by using the finite element simulation of the temperature change caused by the thermal stress, using the finite element simulation of the temperature change caused by the thermal stress. According to the heat conduction equation and boundary condition, derivation hollow photovoltaic through the finite element software to hollow photovoltaic glass plate thermal stress for numerical simulation and research. Adopted in structural analysis directly define temperature load method analysis force hollow photovoltaic glass thermal stress. Use the finite element software to hollow photovoltaic glass plate thermal stress for numerical simulation and research. For the known temperature field distribution situation, adopted in structural analysis directly define temperature load method analysis force hollow photovoltaic glass thermal stress. Through the finite element software ANSYS to calculate different unit was carried out and the numerical simulation, the results show that the analytical solution and the numerical solution has good goodness of fit. The proposed calculation formula for engineering design has the certain reference value.

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.

Influence on Seismic Performance of Joints of Cellular Steel Column and Steel Beam due to the Opening Rate

2014 ◽  
Vol 578-579 ◽  
pp. 282-286
Author(s):  
Pi Yuan Xu ◽  
Zhang Lin Zhai ◽  
Ya Feng Xu
Keyword(s):  
Finite Element ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Element Model ◽  
Steel Beam ◽  
Finite Element Software ◽  
Invariant Moments ◽  
Element Simulation ◽  
Hole Position ◽  
Steel Column

The article researches seismic performance of joints of cellular steel column and steel beam by finite element simulation. Finite element model is established by using the finite element software reasonably. Considering about the hole position and the distance of center of hole as invariant moments, under low cyclic loading we can attain hysteretic curves and skeleton curves etc. which are compared and analyzed in different opening rate by simulated software. The results show that for a certain axial compression ratio (n=0.45) of joints of cellular steel column and beam, the reasonable opening rate can improve the seismic behavior of the joints.

Finite Element Simulation and Analysis on Folding Defects of Inner-Grooved Copper Tubes

2012 ◽  
Vol 472-475 ◽  
pp. 791-794
Author(s):  
Jin Song Liu ◽  
Neng Yong Ye ◽  
Shi Hong Zhang
Keyword(s):  
Finite Element ◽  
Great Influence ◽  
Element Model ◽  
Processing Parameters ◽  
Finite Element Software ◽  
Drawing Speed ◽  
Element Simulation ◽  
Metal Deformation ◽  
Actual Field ◽  
The Finite Element Model

Based on the actual field processing parameters, the finite element model of TP2 inner- -grooved copper tubes at the groove forming stage was established by using finite element software MSC. Marc in this paper. It shows that the simulation results are in agreement with the actual situation. The flowing condition of inner groove during metal deformation can be reflected exactly through this model. By the analysis on the metal force of spinning area, the revolving speed of motor and grooved plug and the drawing speed have a great influence on the folding defects.

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.

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