Design of Key Parameters on Differential Velocity Vane Pump of Eccentric-Noncircular Gears

2008 ◽  
Vol 392-394 ◽  
pp. 393-397
Author(s):  
M. Hu ◽  
M. Chen
Keyword(s):  
Angular Velocity ◽  
Periodic Function ◽  
Concrete Structure ◽  
Structure Design ◽  
Opening Angle ◽  
Vane Pump ◽  
Pump Housing ◽  
Maximal Opening ◽  
Noncircular Gears ◽  
Vane Angle

The parameters of impellers and the pump housing as key assembly to differential velocity vane pump of eccentric-noncircular gears has been designed in this paper. By researching vane spacing angles, vane numbers, vane angle and maximal opening angle on impellers, the results are gained that vane spacing angles are the periodic function of noncircular gear angular velocity, vane numbers is identical with centrodes vane numbers of noncircular gear. Assuring right and reliable working to the impellers, numbers, positions and opening angles of the matching holes of the pump housing are analyzed; defining that actual impeller vane angle must be less-than theoretical value, numbers of the matching holes must be vane numbers and opening angles of the matching holes must be less-than theoretical value, which provide the condition for concrete structure design for differential velocity vane pump of eccentric-noncircular gears.

scholarly journals A Proposal of Concrete Structure Design Methods Considering Environmental Performance

2005 ◽  
Vol 3 (1) ◽  
pp. 41-51 ◽  
Author(s):  
Kenji Kawai ◽  
Takafumi Sugimaya ◽  
Koichi Kobayashi ◽  
Susumu Sano
Keyword(s):  
Environmental Performance ◽  
Concrete Structure ◽  
Structure Design ◽  
Design Methods

scholarly journals Discussion on Prefabricated Concrete Structure Design Method under BIM Technology

2020 ◽  
Vol 198 ◽  
pp. 03011
Author(s):  
Wang Hongyan ◽  
Zhang Zihong
Keyword(s):  
Life Cycle ◽  
Structural Design ◽  
Concrete Structure ◽  
Production Efficiency ◽  
Design Method ◽  
Collaborative Work ◽  
Structure Design ◽  
Building Information ◽  
Correct Understanding ◽  
Design Construction

BIM is a data tool used in various stages of design, construction and management. It can integrate different models of buildings and realize sharing and transmission during the life cycle of the project, ensuring that engineering technicians can access different building information with a correct understanding and real-time response, it lays a good foundation for different participants including design, construction and management to achieve collaborative work. It is very important whether it is to ensure production efficiency, save costs and shorten construction periods. For the newly emerging prefabricated buildings, their structural design will become more efficient, accurate and reasonable due to the introduction of BIM technology.

A Study on Automatic Reinforcement Placement System of Spread Footing Based on S-BIM

2013 ◽  
Vol 838-841 ◽  
pp. 3296-3299
Author(s):  
Young Sang Cho ◽  
Sung Chul Hong ◽  
Hyun Suk Jang ◽  
Min O Kang
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Economic Value ◽  
Structure Design ◽  
Automatic Reinforcement ◽  
Reinforced Concrete Structure ◽  
Basic Form ◽  
Spread Footing ◽  
Information Generation ◽  
Placement Algorithm

The purpose of this study is to enhance productivity and economic value with precise object information generation and reinforcement quantity take-off by developing the Automation Reinforcement Placement System of Foundation (ARPF). This study was conducted by selecting the most basic form, spread footing, and no force was applied on the foundation other than axial force. For the development of ARPF, variables that should be input into the typical programs directly by users were minimized through developing the reinforcement placement algorithm by using visual C# based on the reinforced concrete structure design standard. The process of reinforcement detail placement formation was performed in the Tekla Structure (TS) that has outstanding accessibility and usability of API. Objects made by applying ARPF enable information confirmation and modification, as typical ones. Through this process using ARPF, rapid and precise reinforcement quantity take-off and footing bar placement are possible. If modeling is performed on the Tekla Structures by using ARPF, a detailed 3D reinforcement placing drawing, not 2D, can be created. It is expected that this method may take a smaller amount of time and effort than the typical drawing generation method that users had to generate objects or input information themselves.

scholarly journals Perencanaan Jembatan Rangka Baja Pelengkung Sungai Liong

2018 ◽  
Vol 2 (2) ◽  
pp. 10-21
Author(s):  
Febry Suhendra ◽  
Faisal Ananda ◽  
Alamsyah Alamsyah
Keyword(s):  
Service Time ◽  
Concrete Structure ◽  
Structure Design ◽  
Steel Frame ◽  
Arch Bridge ◽  
Frame Design ◽  
Concrete Piles ◽  
Bridge Type ◽  
Construction Type ◽  
Main Girder

Bengkalis government do project to build Liong river bridge with construction type is concrete arch bridge. But at relatively new service time, there was a big deflection in one  of bridge segments. In this research will be design the bridge with steel arch bridge type.             Bridge design using RSNI T-02-2005 about bridge load standard. For steel frame design refers to RSNI T-03-2005, and concrete structure design refers to RSNI T-12-2004. In piles calculation, using the Schmertmann method.             The results of top structure design is top chord using WF.305.305.22.35, bottom chord WF. 305.305.39.63, diagonal chord WF.305.305.22.35, vertical hanger WF 203.203.10.17, wind bracing WF.203.203.8.12, truss bracing WF.203.203.8.12, girder using WF.400.200.8.13, cross girder WF.500.200.10.16, and the main girder using WF.500.200.10.16 profile. The results of bottom structure design is abutment width of 9,3 m and abutment length of 11 m.  Using concrete piles with diameter of 50 cm, length 20 m and 28 point of stake. The largest deflection of bridge is 118,72 mm. This deflection is still safe because the value smaller than tolerance deflection L/240, which is 458,33 mm. The most compatible construction method for liong II river bridge is temporary coloumn method.

Silicon Micro-Ring Gyroscopes

2007 ◽  
Author(s):  
Guo-En Chang ◽  
Chia-Ou Chang ◽  
Chan-Shin Chou ◽  
Wen-Tien Chang Chien
Keyword(s):  
Angular Velocity ◽  
Multiple Scales ◽  
Method Of Multiple Scales ◽  
Phase Locking ◽  
Variable Coefficients ◽  
Structure Design ◽  
Mode Shapes ◽  
Nodal Displacement ◽  
Out Of Plane ◽  
The Relationship

The aim of this paper is to analysis a single-crystal microring gyroscope. It is found that Si(111) ring is in-plane isotropic but out-of-plane anisotropic, while Si(100) ring is fully anisotropic. Hamilton’s principle is used to derive the equations of vibration, which is a set of partial differential equations with variable coefficients. The exact solutions for frequencies and mode shapes are found. It is also found that the degeneracy of frequencies for isotropic ring splits for anisotropic ring. Then structure design and dynamic analysis of silicon resonant micro-ring gyroscope are presented. The perturbation method of multiple scales is used to find the explicit expression for the relationship between input (angular velocity) and output (nodal displacement of the ring). The effectiveness of phase-locking for enhancing the output signal is proved and quantitatively analyzed.

Stability Analysis of Wall Structure which its Depth is over Thousand m

2014 ◽  
Vol 580-583 ◽  
pp. 1092-1095
Author(s):  
Ying Hao Wang ◽  
Xiao Chen Fu ◽  
Xiao Hong Jing
Keyword(s):  
Stability Analysis ◽  
Concrete Structure ◽  
Structure Design ◽  
Wall Structure ◽  
Average Strain ◽  
Design Code ◽  
Monitoring Result

According to the monitoring result of wall structure which its depth is over thousand, analyzed the strain of inner and outer edges of concrete and inner steel; Neglect construction factors, by comparing the strain of inner concrete and inner steel, it shows that their deformation is consistently; Using the average strain of inner and outer edges of concrete to check strength adopting method of concrete structure design code, shows that they can meet the requirement.

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