Profile Surface Construction and Pressure Angle Analysis of a New Type of Globoidal Indexing Cam

2010 ◽  
Vol 29-32 ◽  
pp. 1608-1614 ◽  
Author(s):  
Lei Li ◽  
Xian Ying Feng ◽  
Zi Ping Zhang ◽  
Xing Chang Han ◽  
Ya Qing Song
Keyword(s):  
Geometric Model ◽  
Three Dimensional ◽  
Surface Equation ◽  
Cam Mechanism ◽  
Pressure Angle ◽  
Three Dimensional Modeling ◽  
Meshing Equation ◽  
New Type ◽  
Three Dimensional Coordinate ◽  
3D Geometric Model

This paper presents a new type of globoidal indexing cam mechanism with steel ball. The characteristic of this mechanism has double circular arc section for cam raceway. Due to this kind of cam raceway section the mechanism can realize approximate rolling transmission. According to rotary transform tensor theory profile surface equation of globoidal cam is established. Meshing equation is built through meshing theory, and profile surface equation is determined by meshing equation. Based on profile surface equation 3D geometric model for globoidal cam is established. MATLAB software is used to calculate three-dimensional coordinate points, these coordinate points are imported into Pro/E software, and finally 3D model for globoidal cam is established by three-dimensional modeling function of Pro/E software. Pressure angle equation of globoidal cam is also established. On the condition that the other parameters remain unchanged the variation law of values of pressure angle depended on cam angle and indexing plate rotary radius is obtained respectively.

3d Geometric Model of Transparent Tower Equipment Display in OpenGL

2014 ◽  
Vol 722 ◽  
pp. 281-284 ◽  
Author(s):  
Hai Ru Yang ◽  
Guo Zhi Chen ◽  
Hui Zhen Wang ◽  
Liang Li
Keyword(s):  
Dynamic Model ◽  
3D Model ◽  
Geometric Model ◽  
Three Dimensional ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Tower Equipment ◽  
3D Geometry ◽  
High Level ◽  
3D Geometric Model

It’s difficult to describe the 3d geometry and to establish the 3d model of tower equipment in OpenGL. High-level command functions to define complex three-dimensional modeling is not provided in OpenGL. This paper introduces 3d model of the tower equipment how to display dynamically in OpenGL. Interface of OpenGL import 3d model is description in detailed. Storaging format and reading file of STL (Stereo Lithography) are elaborated. How to build the 3d model is descripted. When tower equipment displayed dynamically, what is the key step to establish the model of tower equipment. The dynamic model of the whole tower equipment is displayed, in order to see clearly the structure of tower equipment.

The Finite Element Analysis of a Heavy Semi-Trailer Frame Based on ANSYS

2014 ◽  
Vol 644-650 ◽  
pp. 455-458
Author(s):  
Yao Ye ◽  
Yong Hai Wu
Keyword(s):  
Finite Element ◽  
Geometric Model ◽  
Reference Method ◽  
Element Model ◽  
Element Analysis ◽  
Emergency Braking ◽  
The Finite Element Analysis ◽  
New Type ◽  
Stress And Deformation ◽  
3D Geometric Model

Frame has important effects on the performance of the whole of heavy semi-trailer. A heavy semi-trailer frame is analyzed and researched on in the finite-element way in this article. The frame of 3D geometric model is established by using Pro/E. And it was imported into the Hypermesh to establish frame finite element model. Frame are calculated by using ANSYS solver in bending condition, emergency braking conditions and rapid turn conditions of stress and deformation conditions. The computational tools and methods we used provide the new type of frame and development with a reference method to refer to in this paper.

Hypoid Gear Three-Dimensional Modeling with Pro/E

2014 ◽  
Vol 915-916 ◽  
pp. 236-239
Author(s):  
Man Yang ◽  
Hui Bin Li ◽  
Bao Yun Xu
Keyword(s):  
Coordinate Transformation ◽  
Three Dimensional ◽  
Machining Process ◽  
Tooth Surface ◽  
Machining Parameters ◽  
Hypoid Gear ◽  
Surface Equation ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
Projection Transformation

For hypoid gear which processed by HFT (hypoid gear formate tilt) method, geometry parameters and machining parameters of hypoid gear were calculated by using Gleason card. According to the actual machining process and meshing principle, tooth surface equation was derived by coordinate transformation. Then the discrete coordinates points of tooth surface were obtained by using MATLAB tools and projection transformation principle, and data were saved in ibl format. At last the 3-demensional model of hypoid gear were established by importing the ibl format data in Pro/e.

Research of Advancing Mechanism with Three Circular Arc Equidistant Profile Connection of Drill

2011 ◽  
Vol 179-180 ◽  
pp. 895-898
Author(s):  
You Xin Luo ◽  
Heng Shu Li ◽  
Hui Jun Wen ◽  
Yu Zhou
Keyword(s):  
Stress Concentration ◽  
Three Dimensional ◽  
Circular Arc ◽  
Three Dimensional Modeling ◽  
Rock Drill ◽  
Dimensional Modeling ◽  
Intermediate Shaft ◽  
New Type ◽  
Loaded Rock ◽  
The Common

Study the existing advancing mechanism of drill, analyze the disadvantage of the flat key and the spline, and the feature of the three circular arc equidistant profile connection. Taking the common chain advancing mechanism as basis, using three circular arc equidistant curve to make sprocket bore and intermediate shaft external cylindrical fit constitute the three circular arc equidistant profile keyless connection. Then introduce the advancing mechanism with three circular arc equidistant profile connection of drill. Applying Solidworks2010, we created the three-dimensional modeling of the mechanism, which lay the foundation for the further research and application. The new type advancing mechanism has many advantages, such as automatic-centering accurately, convenient in assembling and disassembling, eliminating the stress concentration, simplicity of the fit section，transferring bigger torque, suitable for heavy-loaded rock drill machine.

scholarly journals The Computational Fluid Dynamics Study of Orientation Effects of Oar Blade

2013 ◽  
Vol 29 (1) ◽  
pp. 23-32 ◽  
Author(s):  
Alexandra Laurent ◽  
Annie Rouard ◽  
Vishveshwar R. Mantha ◽  
Daniel A. Marinho ◽  
Antonio J. Silva ◽  
...  
Keyword(s):  
Flow Direction ◽  
Geometric Model ◽  
Pressure Coefficient ◽  
Angular Position ◽  
Three Dimensional ◽  
Rear Side ◽  
Flow Conditions ◽  
Numerical Resolution ◽  
The Difference ◽  
3D Geometric Model

The distribution of pressure coefficient formed when the fluid contacts with the kayak oar blade is not been studied extensively. The CFD technique was employed to calculate pressure coefficient distribution on the front and rear faces of oar blade resulting from the numerical resolution equations of the flow around the oar blade in the steady flow conditions (4 m/s) for three angular orientations of the oar (45°, 90°, 135°) with main flow. A three-dimensional (3D) geometric model of oar blade was modeled and the kappa-epsilon turbulence model was applied to compute the flow around the oar. The main results reported that, under steady state flow conditions, the drag coefficient (Cd= 2.01 for 4 m/s) at 90° orientation has the similar evolution for the different oar blade orientation to the direction of the flow. This is valid when the orientation of the blade is perpendicular to the direction of the flow. Results indicated that the angle of oar strongly influenced the Cdwith maximum values for 90° angle of the oar. Moreover, the distribution of the pressure is different for the internal and external edges depending upon oar angle. Finally, the difference of negative pressure coefficient Cpin the rear side and the positive Cpin the front side, contributes toward propulsive force. The results indicate that CFD can be considered an interesting new approach for pressure coefficient calculation on kayak oar blade. The CFD approach could be a useful tool to evaluate the effects of different blade designs on the oar forces and consequently on the boat propulsion contributing toward the design improvement in future oar models. The dependence of variation of pressure coefficient on the angular position of oar with respect to flow direction gives valuable dynamic information, which can be used during training for kayak competition.

Three-Dimensional Modeling of Opposed Biconical Cone Screw High-Pressure Seawater Hydraulic Pump

2013 ◽  
Vol 310 ◽  
pp. 287-293 ◽  
Author(s):  
Xin Hua Wang ◽  
Zhi Ben Gong ◽  
Li Wei Wang ◽  
Shun Wen Sun ◽  
Gang Zheng
Keyword(s):  
High Pressure ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Design Parameters ◽  
Hydraulic Pump ◽  
Three Dimensional Modeling ◽  
Dimensional Modeling ◽  
New Type ◽  
Design And Manufacture ◽  
Matlab Programming

The rotor and stator were major components of the opposed biconinal cone screw high pressure seawater hydraulic pump, which precision of design and manufacture was particularly high, and the combining status between the stator and rotor has a significant impact on the performance of the new type pump, so the related research on above problems are carried out. In order to satisfy the demands of design efficiency and manufacture decision, a fast and simple way was presented to model 3D cone screw and bushing. Three-dimensional space Cartesian coordinates of cone screw and bushing profile with MATLAB programming were obtained according to the cone screw and bushing surface equation and the design parameters,3D curves of cone screw and bushing with MATLAB were rendered, and the feature point space coordinates were imported to Pro/Engineer so as to build cone screw and bushing solid model. Finally, making virtual assembly and checking interference on the screw and the bushing were necessary. The proposed method can make the complex 3D modeling more accurate, feasible and efficient.

NEW TYPE OF STRANGE ATTRACTOR FROM A GEOMETRIC MODEL OF CHUA'S CIRCUIT

1992 ◽  
Vol 02 (03) ◽  
pp. 697-704 ◽  
Author(s):  
V. N. BELYKH ◽  
L. O. CHUA
Keyword(s):  
Strange Attractor ◽  
Geometric Model ◽  
Three Dimensional ◽  
Homoclinic Orbits ◽  
Reverse Time ◽  
Mathematical Properties ◽  
New Type ◽  
Chaotic Nature ◽  
Three Dimensional Vector Field ◽  
Hyperbolic Points

We present a new type of strange attractors generated by an odd-symmetric three-dimensional vector field with a saddle-focus having two homoclinic orbits at the origin. This type of attractors is intimately related to the double scroll. We present the mathematical properties which prove rigorously the chaotic nature of this strange attractor to be different from that of a Lorenz-type attractor or a quasiattractor. In particular, we proved that for certain nonempty intervals of parameters, our two-dimensional map has a strange attractor with no stable orbits. Unlike other known attractors, this strange attractor contains not only a Cantor set structure of hyperbolic points typical of horseshoe maps, but also unstable points (i.e., stable in reverse time). This implies that the points from the stable manifolds of the hyperbolic points must necessarily attract the unstable points.

3D FEM Simulation of Multipass ECAP Ti-50.8%Ni at Various Temperatures

2014 ◽  
Vol 1004-1005 ◽  
pp. 1204-1210 ◽  
Author(s):  
Mohamed Osman ◽  
Dian Tao Zhang ◽  
Yun Xiang Tong ◽  
Yu Feng Zheng ◽  
Li Li
Keyword(s):  
Geometric Model ◽  
Three Dimensional ◽  
Fem Simulation ◽  
3D Fem ◽  
Remarkable Effect ◽  
Fine Grained ◽  
Angular Pressing ◽  
3D Geometric Model ◽  
3D Software ◽  
Deformation Homogeneity

Equal channel angular pressing (ECAP) is widely studied for its potential to produce ultra-fine grained (UFG) structure in TiNi shape memory alloys (SMA). In the present work, the effect of multipass ECAP parameters on the deformation behavior and strain distribution was investigated, at various deformation temperatures through different planes in the ECAPed billet. Three-dimensional (3D) geometric model with corner angle 120◦was designed by finite element method (FEM) software for ECAPing Ti-50.8%Ni by route Bcin DEFORM-3D software. Two methods were used to quantify deformation homogeneity through various planes in the processed billet, including strain standard deviation (SSD) and inhomogenity index (Ci). The simulation results demonstrate that by increasing ECAP passes, the cumulative average strain can increase and obtain UFG structure, but heterogeneity still exist across planes. In addition, temperature has a remarkable effect on homogeneity distribution .As well as Ciexhibits good results for multipass ECAP at various deformation temperature compared to SSD value.

Design of Body Structure for New Type Lightweight Electric Vehicle

2014 ◽  
Vol 620 ◽  
pp. 335-340 ◽  
Author(s):  
Li Xia Wang ◽  
Tian Feng Zhao ◽  
Jian Bo Cao ◽  
Ji Feng Shen ◽  
Yan Bin Xiao ◽  
...  
Keyword(s):  
Energy Saving ◽  
Electric Vehicle ◽  
Three Dimensional ◽  
Structure Design ◽  
The Body ◽  
Vehicle Body ◽  
Body Structure ◽  
Three Dimensional Modeling ◽  
Body Design ◽  
New Type

Considering the efficient use of energy and environmental pollution, people's lives tend to energy saving and environmental protection, and energy saving electric vehicles has gradually been widely used. Through combining theoretical analysis, numerical simulation, system design and experimental validation, based on studying electric vehicle body design principles, the experiment optimized electric vehicle body design, and reduced the weight of the vehicle effectively. Its performance becomes more advanced, and the application becomes more economical and safe. By using Solidworks software, lightweight electric vehicle body structure of two-dimensional design and three-dimensional modeling was built to reach practical requirements. The body structure design is original and simple, which has good practical value.

The Research of Infrared Image Generation Method Based on the OGRE

2013 ◽  
Vol 710 ◽  
pp. 623-627
Author(s):  
Cheng Po Mu ◽  
Xian Lei Zhang ◽  
Chao Han ◽  
Ji Yuan Wang
Keyword(s):  
Infrared Radiation ◽  
Geometric Model ◽  
Three Dimensional ◽  
Infrared Image ◽  
Transmission Model ◽  
Three Dimensional Model ◽  
Atmospheric Transmission ◽  
Infrared Thermal Imaging ◽  
Radiation Data ◽  
3D Geometric Model

Infrared thermal imaging technology in various fields has been widely used. This paper firstly sets up the three-dimensional targets infrared radiation models and the atmospheric transmission model, and then generates the associated radiation data; Secondly building target 3D geometric model, the radiation data is mapped to the three-dimensional model, target in the 3D space is reconstructed of the infrared radiation characteristics; Finally it is using OGRE image engine rendering technology and GPU programmable pipeline technology that generate the target infrared image. This will have important significance to the next step to construct complex infrared scene.

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