Study on the Surporting Mechanism of Precision Turning Process of Big-Diameter Length Rate Shaft by the Central Frame

2012 ◽  
Vol 538-541 ◽  
pp. 2139-2142
Author(s):  
Guo Zhi Zhang
Keyword(s):  
Probability Theory ◽  
Finite Element ◽  
Elastic Modulus ◽  
Theoretical Basis ◽  
Control Mechanism ◽  
Element Model ◽  
Turning Process ◽  
Precision Turning ◽  
Calculation Results ◽  
Theoretical Mechanics

Deformation of the big-diameter length rate shaft and turning process control mechanism were studied. When it was supported by the central frame, its theoretical mechanics models were established. Based on probability theory, considering the randomness of cutting force, elastic modulus, its length and its diameter, its theoretical model was established to calculate its standard deviation of the roundness. Moreover, its dynamic response finite element model was established, and the model was verified through comparison with the theoretical calculation results. The study provides the method and theoretical basis for the precision turning process planning of the big-diameter length rate shaft.

Study on the Surporting Mechanism of Precision Turning Process of Big-Diameter Length Rate Shaft by the Top

2012 ◽  
Vol 557-559 ◽  
pp. 1263-1267
Author(s):  
Guo Zhi Zhang ◽  
Jun Jing Fu
Keyword(s):  
Probability Theory ◽  
Finite Element ◽  
Theoretical Basis ◽  
Control Mechanism ◽  
Element Model ◽  
Turning Process ◽  
Process Systems ◽  
Precision Turning ◽  
Calculation Results ◽  
Theoretical Mechanics

Deformation of shaft and turning process control mechanism were studied. When its clamping methods were different, its theoretical mechanics models were established. Based on probability theory, considering the randomness of cutting force, elastic modulus, its length and its diameter, its theoretical model was established to calculate its standard deviation of the roundness and typical parameters process systems were calculated. Moreover, its dynamic response finite element model was established, and the model was verified through comparison with the theoretical calculation results. The study provides the method and theoretical basis for the precision turning process planning.

Analysis of Packer Rubber Mechanics Properties

2014 ◽  
Vol 971-973 ◽  
pp. 380-389
Author(s):  
Jian Ning Wang ◽  
Gang Wu ◽  
Wei Yi Xie ◽  
Xin De Han ◽  
Ming Chao Gang
Keyword(s):  
Finite Element ◽  
Elastic Modulus ◽  
Constitutive Model ◽  
Contact Stress ◽  
Theoretical Basis ◽  
Element Model ◽  
Rubber Material ◽  
Bottom Hole ◽  
Sealing Performance ◽  
The Finite Element Model

Abstract: The packer rubber stress in the bottom hole is more complex. Based on constitutive model of the packer rubber material, this paper determines such parameters as model constants, Poisson's ratio of rubber materials and elastic modulus by using experimental method, to build up the finite element model of center tube-rubber cylinder-casing for the purpose of stress analysis. Finally, the distribution regularity of rubber cylinder-casing contact stress and packer setting travel distance with varying loads is concluded. The results can provide the theoretical basis for further analysis of packer rubber sealing performance.

Structural Optimization of Packer’ Cone with Material Properties and Mechanics Parameters Based on ANSYS

2012 ◽  
Vol 252 ◽  
pp. 172-175
Author(s):  
Zhi Ping Guo ◽  
Wei Guo ◽  
Yan Fei Wang ◽  
Guan Fu Li ◽  
Yan Zheng Lu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Material Properties ◽  
Theoretical Basis ◽  
Cone Angle ◽  
Element Model ◽  
Mechanical Analysis ◽  
Calculation Results ◽  
Set Up ◽  
The Finite Element Model

Cone is one part of a packer. To understand the seal effectiveness of the packer, mechanical analysis must be made for it. The finite element model of packer is set up and packer minimum setting load changes are calculated under different climb angle of cone. Results show that reduce the cone angle of climb can make the packer sealing load significantly lower.The calculation results provide the theoretical basis for the real operation.

Study on the Probability Finite Element Format of Hyper-Static Shaft

2012 ◽  
Vol 557-559 ◽  
pp. 2181-2184
Author(s):  
Guo Zhi Zhang
Keyword(s):  
Finite Element ◽  
Elastic Modulus ◽  
Finite Element Model ◽  
Cutting Force ◽  
Deformation Mechanism ◽  
Theoretical Basis ◽  
Element Model ◽  
Maximum Deflection ◽  
Probability Sample

When hyper-static shaft was turned, its deformation mechanism was studied. Its finite element format was established when it was supported by the top. Considering the randomness of cutting force, elastic modulus, its length and its diameter, its probability finite element format was established. Moreover, its probability sample finite element model was established, and the effect of cutting force, elastic modulus, its length and its diameter to its maximum deflection was obtained. The study provides the method and theoretical basis for the analysis of the hyper-static.

Research on Mechanics Analysis of the Reachstacker Spreader Based on ANSYS

2013 ◽  
Vol 700 ◽  
pp. 123-127
Author(s):  
Shi Cheng Hu ◽  
Yong Feng Zheng ◽  
Hong Bo Huang ◽  
Xiang Jun Wang
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Fatigue Life ◽  
Human Body ◽  
Theoretical Basis ◽  
Element Model ◽  
Static Strength ◽  
Mechanics Analysis ◽  
Calculation Results ◽  
Modal Vibration

This paper establishes finite element model of the spreader based on ANSYS, simulating its mechanical properties: static strength and modal vibration. Based on the calculation results, it points out the weaknesses of the spreader under more cases and its vibration characteristics, in addition, we also discuss the impacts on environment and human body from the perspective of ergonomics, which can provide theoretical basis for further fatigue life and dynamics research.

Topology Optimization Design of High Pressure Storage Tank Structure

2012 ◽  
Vol 430-432 ◽  
pp. 828-833
Author(s):  
Qiu Sheng Ma ◽  
Yi Cai ◽  
Dong Xing Tian
Keyword(s):  
Finite Element ◽  
High Pressure ◽  
Topology Optimization ◽  
Storage Tank ◽  
Optimization Design ◽  
Influence Factors ◽  
Element Model ◽  
Design Variables ◽  
Calculation Results ◽  
Pressure Storage

In this paper, based on ANSYS the topology optimization design for high pressure storage tank was studied by the means of the finite element structural analysis and optimization. the finite element model for optimization design was established. The design variables influence factors and rules on the optimization results are summarized. according to the calculation results the optimal design result for tank is determined considering the manufacturing and processing. The calculation results show that the method is effective in optimization design and provide the basis to further design high pressure tank.

Calculating Mechanics Characteristics of Single-Walled Carbon Nanotube Materials by Finite Element Method

2017 ◽  
Vol 730 ◽  
pp. 548-553
Author(s):  
Jing Ge ◽  
Hao Jiang ◽  
Zhen Yu Sun ◽  
Guo Jun Yu ◽  
Bo Su ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Radial Direction ◽  
Element Model ◽  
Beam Element ◽  
Beam Position ◽  
Single Walled Carbon ◽  
Finite Element Software ◽  
Calculation Results ◽  
The Moment

In this paper, we establish the mechanical property analysis of Single-walled Carbon Nanotubes (SWCNTs) modified beam element model based on the molecular structural mechanics method. Then we study the mechanical properties of their radial direction characteristics using the finite element software Abaqus. The model simulated the different bending stiffness with rectangular section beam elements C-C chemical force field. When the graphene curled into arbitrary chirality of SWCNTs spatial structure, the adjacent beam position will change the moment of inertia of the section of the beam. Compared with the original beam element model and the calculation results, we found that the established model largely reduced the overestimate of the original model of mechanical properties on the radial direction of the SWCNTs. At the same time, compared with other methods available in the literature results and the experimental data, the results can be in good agreement.

Finite Element Simulation Analysis on Space KX-Joint

2014 ◽  
Vol 915-916 ◽  
pp. 146-149
Author(s):  
Yong Sheng Wang ◽  
Li Hua Wu
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Simulation Analysis ◽  
Local Buckling ◽  
Element Model ◽  
Ansys Software ◽  
Element Simulation ◽  
Calculation Results ◽  
Buckling Failure ◽  
The Finite Element Model

The finite element model of the space KX-Joint was established using ANSYS software, and the failure mode and ultimate bearing capacity of KX-joint were researched. Calculation results show that the surface of chord wall on the roots of compression web members was into the plastic in K plane, and the holding pole without the plastic area and the local buckling failure happened in the surface of chord wall on the roots of Compression Web Members in X plane; The bearing capacity of the joint increased with the Chord diameter, which was appears in the form of power function.

scholarly journals Investigation on aerodynamic characteristics of bionic membrane nano rotor

2021 ◽  
Vol 18 ◽  
pp. 175682932110433
Author(s):  
Shanyong Zhao ◽  
Zhen Liu ◽  
Ke Lu ◽  
Dacheng Su ◽  
Shangjing Wu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Structural Parameters ◽  
Element Model ◽  
Aerodynamic Characteristics ◽  
Aerodynamic Performance ◽  
Dynamics Model ◽  
Interaction Method ◽  
Calculation Results ◽  
The Finite Element Model

In this paper, the bionic membrane structure is introduced to improve the aerodynamic performance of nano rotor at the low Reynolds number. The aerodynamic characteristics of nano rotor made of hyperelastic material as membrane blades are studied. Firstly, based on the hyperelastic constitutive model, a finite element model of the rotor is established and compared with the results of the modal test to verify the accuracy of the model. Then the computational fluid dynamics model of membrane nano rotor is established which combined with the finite element model. The aerodynamic characteristics of the membrane rotor under hovering conditions are studied using fluid–structure interaction method. It is found that the calculation results matched well with the experiment results. The design of the structural parameters such as the membrane proportion, shape, and position of the membrane rotor is optimized. The influence of each parameter on the aerodynamic performance of the rotor is obtained. Under certain structural conditions, the performance can be effectively improved, which provides a new idea for the design of the nano rotor.

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