Structural design and mechanical analysis of a new equipment for tire vulcanization

2021 ◽  
pp. 1-17
Author(s):  
Weiping Qiu ◽  
Jianbo Wang ◽  
Wangyu Liu ◽  
Zhenhong Xie ◽  
Pengfei Tian ◽  
...  
Keyword(s):  
Structural Design ◽  
Mechanical Analysis

scholarly journals Structure Analysis and Design of Automobile plastic clutch pump body based on friction welding

2020 ◽  
Vol 316 ◽  
pp. 02001
Author(s):  
Jing Sheng ◽  
Aamir Sohail ◽  
Mengguang Wang ◽  
Zhimin Wang
Keyword(s):  
High Temperature ◽  
Structural Design ◽  
Friction Welding ◽  
Room Temperature ◽  
Welding Process ◽  
Structure Type ◽  
Mechanical Analysis ◽  
Analysis And Design ◽  
Technical Requirements ◽  
Design Requirements

In order to realize the need for lightweight automobiles through replacing steel with plastics, the research and development of the plastic clutch pump body based on the friction welding was carried out. For the clutch pump body connected by friction welding process between the upper pump body and the lower pump body, the technical requirements of pressure 14 MPa and durability (high temperature 7.0 × 104 times, room temperature 7.0 × 105) are required. The structure type of the upper and lower pump bodies of the end face welding type was proposed. Through the static analysis of the pump body and weld and the mechanical analysis under the working condition, the structure of the clutch pump body (upper and lower pump body) was determined. According to the established welding process, the pressure of the clutch pump body is more than 15 MPa, and the number of high-temperature durable circulation and the number of room temperature durable circulation also reached 7.2×104 and 7.3×105 times respectively. The results show that the structural design of a clutch pump body meets the design requirements.

scholarly journals Mechanical analysis of sealing performance for compression packer rubber tube

2018 ◽  
Vol 19 (3) ◽  
pp. 309 ◽  
Author(s):  
Fuying Zhang ◽  
Xiangmin Jiang ◽  
Honghao Wang ◽  
Nana Song ◽  
Jianlei Chen ◽  
...  
Keyword(s):  
Structural Design ◽  
Mechanical Analysis ◽  
Deformation Analysis ◽  
Rubber Tube ◽  
Support Ring ◽  
Sealing Performance ◽  
Deformation Stages ◽  
Core Components ◽  
Sealing Mechanism ◽  
Sealing Pressure

The compression packer rubber is one of the core components of the packer. According to the sealing mechanism of the compression packers rubber, the deformation of rubber between the central tube and casing tube is analyzed in the initial and working stages. The compression rubber is also strained radially against the support ring by means of a controlled tubular expansion process. In this paper, the theoretical model for the deformation analysis is established by the structure and working characteristics of rubber tube. In addition, the nonlinear relationship between the material, geometry and stress in the constrained and stable deformation stages is analyzed by application of pressure methods. The analytical results show the contact pressure and shear stress distribution on the sealing surface of the rubber and the effect of rubber geometry and its material properties on sealing performance in terms of maximum sealing pressure. Then, the criterion of sealing performance evaluation of the rubber is established by the numerical results. This analytical model will provide a theoretical basis and guidance for the structural design of the compression packer rubber and it will be of great significance to improve the sealing performance and reliability of packer rubber.

Design of ITER TF Magnet Cryostat Feeder Through

2010 ◽  
Author(s):  
T. Zhou ◽  
Y. Song
Keyword(s):  
Structural Design ◽  
Heat Load ◽  
Room Temperature ◽  
Electrical Power ◽  
Safety Margin ◽  
Mechanical Analysis ◽  
Functional Requirements ◽  
Radiation Shield ◽  
Mechanical Loads ◽  
Transient Thermal

International Thermonuclear Experimental Reactor (ITER) TF feeder systems convey the cryogenic supply and electrical power to the TF coils. The Cryostat Feed-through (CFT) includes the straight feeder part from the cryostat wall to the S-Bend Box (SBB). It is the bottleneck of the feeders. The huge Lorentz-force is a challenge for the CFT design. So the reasonable distribution and structural design of the internal and external supports are important. The CFT include the cold (cryogenic) to warm (room temperature) transitions. It is highly integrated with the cryo-pipes, the busbars, the superconductor joints, the thermal radiation shield and the instrumentation pipes and so on. The cryogenic and electrical requirements, the vacuum and mechanical requirements, and so on are considered when the CFT is designed. This paper presents the functional requirements on the TF CFT, gives its structure. The supports are designed and arrayed according to their mechanical or thermal function separately to stand the huge mechanical loads and isolate the conducting heat load from room temperature respectively. The assembly scheme is also described. Mid-joint and cryostat joint are designed to give the facility for the assembly on location. The mechanical analysis result shows the stress in the stainless steel and G10 material both are within the materials stress safety margin. The heat load to the cryogenic pipes and busbars are also less than the requirement 15W. Transient thermal analysis of global feeder model indicates that 32 days are needed for the feeder components to cool down to the required condition.

The Transmission Design and Production of Cylindrical Cam and Gear Joint Transmission Reducer

2014 ◽  
Vol 684 ◽  
pp. 323-329
Author(s):  
Ming Wang Dong ◽  
Ting Ting Yang ◽  
Lin Wu
Keyword(s):  
Structural Design ◽  
Mechanical Analysis ◽  
Machine Design ◽  
Production Cycle ◽  
Design Calculation ◽  
Analysis Software ◽  
Transmission Design ◽  
Secondary Stage ◽  
Lateral Transmission ◽  
Joint Transmission

Design a kind of reducer, the first stage transmission is a cylindrical cam, the secondary stage transmission is a gear transmission. Multistage transmission of the reducer has carried on the design calculation and checking. On the basis of the lateral cylindrical cam lateral transmission mathematical model, conducted the spiral curve analysis and calculation with numerical analysis software MATLAB. Import the spiral curve data into SOLIDWORKS to complete the 3D modeling of cylindrical cam. According to the structural design of cylindrical cam, complete reducer machine design and virtual assembly of gearless reducer. The stress analysis was carried out on the cam disk with the ANSYS Mechanical Analysis Module of SOLIDWORKS, designed to meet the working conditions. Conducted physical development based on CAD and CAE. The result showed that the design was fast and effective, significantly shorten the production cycle.

The Thermal-Mechanical Analysis of the BIT HCCB Blanket for CFETR

2013 ◽  
Author(s):  
Xuebing Ma ◽  
Songlin Liu ◽  
Jia Li ◽  
Yong Pu ◽  
Xiangcun Chen
Keyword(s):  
Structural Design ◽  
Unique Feature ◽  
Element Model ◽  
Mechanical Analysis ◽  
Hydraulic Calculation ◽  
Allowable Limit ◽  
Primary Stress ◽  
Current Design ◽  
Test Reactor ◽  
Thermal Mechanical Analysis

CFETR is an “ITER-like” China Fusion Engineering Test Reactor. The BIT (Breeder insider tube) HCCB (Helium cooled ceramic breeder) blanket has been designed as one option for CFETR. Its unique feature is that a BIT structure is adopted for the blanket tritium breeder unit. The breeder unit is an assembly of three coaxial coil-pipes, internal coil-pipe is filled with the tritium-breeding material, and the coaxial coil-pipe is embeded in the beryllium pebble. In order assess the feasibility of the BIT HCCB blanket design, a 3D finite element model slice of the BIT HCCB blanket is developed, and the thermo-hydraulic calculation was performed, and thermo-mechanical computations were carried out. And then the primary stress and secondary stress were evaluated according to Structural Design Criteria for ITER In-vessel Components (SDC-IC). This paper presents relevant analyses and results. The preliminary results shows current design satisfies with allowable limit of material and requirement of SDC-IC code.

Research on Mechanical Property of Top Drive Casing Running Tool’s Slips

2012 ◽  
Vol 157-158 ◽  
pp. 1393-1398
Author(s):  
Fa Guang Jiang ◽  
Zheng Liang ◽  
Guang Hui Zhao ◽  
Yong Hong Yan ◽  
Pan Wang
Keyword(s):  
Mechanical Property ◽  
Structural Design ◽  
Theoretical Basis ◽  
Shell Theory ◽  
Mechanical Analysis ◽  
Analysis Model ◽  
Empirical Formulas ◽  
Axial Thrust ◽  
Working Length ◽  
Tooth Form

Top drive casing running tool, because of its convenience, speed and safety, has been widely received by the research enterprises of petroleum mechanism and instrument. Now, there have been developed several kinds of casing running tools which have gradually been used by the drilling corporation at home and abroad. The slips system’s parameters, such as the axial thrust, slips length, teeth form, teeth interval, etc., directly affect the performance and safety of casing running tools. Those have no reports about correlative theoretical investigation results. Here, we found the mechanical analysis model between slip and casing and gain the minimum primitive axis thrust of slips. Then the minimum teeth interval of the slips is deduced by contact mechanics. And then the slips available working length is worked out through the shell theory and empirical formulas. Finally, based on finite element method, we obtain tooth form angles’ recommendable range by studying the tooth form. This study supplies theoretical basis to structural design of slips system of the top drive casing running tool.

Light-cured dental composites characterization by Electron Microscopy

1990 ◽  
Vol 48 (4) ◽  
pp. 428-429
Author(s):  
B. M. Culbertson ◽  
M. L. Devinev ◽  
E. C. Kao
Keyword(s):  
Electron Microscopy ◽  
Mechanical Analysis ◽  
Service Performance ◽  
Dental Composite ◽  
Dental Composites ◽  
Neat Resin ◽  
Scanning Calorimetry ◽  
Research Meeting ◽  
Formulation Variables

The service performance of current dental composite materials, such as anterior and posterior restoratives and/or veneer cements, needs to be improved. As part of a comprehensive effort to find ways to improve such materials, we have launched a broad spectrum study of the physicochemical and mechanical properties of photopolymerizable or visible light cured (VLC) dental composites. The commercially available VLC materials being studied are shown in Table 1. A generic or neat resin VLC system is also being characterized by SEM and TEM, to more fully understand formulation variables and their effects on properties.At a recent dental research meeting, we reported on the differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) characterization of the materials in Table 1. It was shown by DSC and DMA that the materials are substantially undercured by commonly used VLC techniques. Post curing in an oral cavity or a dry environment at 37 to 50°C for 7 or more hours substantially enhances the cure of the materials.

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