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Ship Structural Members Design and Optimization Based on Knowledge-based Engineering
会议论文
2nd International Conference on Industrial Informatics - Computing Technology, Intelligent Technology, Industrial Information Integration (ICIICII), Wuhan, PEOPLES R CHINA, 2016-01-01
作者:
Guan, Guan
;
Yang, Qu
收藏
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浏览/下载:7/0
  |  
提交时间:2019/12/09
ship structure
knowledge-based engineering
quantum-behaved genetic algorithm
design and optimization
Structural design of primary mirror subassembly for space telescope (EI CONFERENCE)
会议论文
2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012, December 8, 2012 - December 9, 2012, Taiwan
Xu H.
收藏
  |  
浏览/下载:48/0
  |  
提交时间:2013/03/25
In order to design a large aperture primary mirror with the diameter of 1150 mm
the parameters impacting on gravity deformation of the mirror were analyzed and discussed in detail
including material selection
diameter-thickness ratio
the number of the support points
location selection and lightweight structure
etc. A novel space mirror structure system was put forward
and its back was opened and supported by six points on back. The dynamic and static and thermal characteristics were analyzed based on the finite element method. Analysis results showed the surface figure accuracy reached to RMS 14.5nm under the action of gravity load along the optical axis direction and the first-order natural frequency was 214Hz which met to the designed indexes requirements. (2013) Trans Tech Publications
Switzerland.
Engineering analysis and research on connection plate of vehicle radar antenna pedestal (EI CONFERENCE)
会议论文
3rd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2012, December 11, 2012 - December 13, 2012, Hong kong
Chang F.
;
Li Y.
;
Yan D.
;
Sun H.
;
Wu Y.
;
Tian X.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2013/03/25
According to the usage of vehicle radar antenna pedestal connection plate
this article analyzes and compares the structure characteristic of welding and casting. We decide to adopt the casting structure and use cast aluminium ZL101A. Based on the connection plate of using conditions
we analyze the deformation and stress of connection plate by the finite element analysis software. The design is in line with the material allowable requirements and to meet the requirements of the system stiffness. (2013) Trans Tech Publications
Switzerland.
Static and dynamic finite element model updating of a rigid frame-continuous girders bridge based on response surface method
会议论文
Changsha, China, December 15, 2012 - December 16, 2012
作者:
Han, Jianping
;
Luo, Yongpeng
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  |  
浏览/下载:3/0
  |  
提交时间:2020/11/15
Damage detection
Reinforced concrete
Rigidity
Surface properties
Benchmark models
Condition assessments
Dynamic tests
Experiment design
Finite element models
Finite-element model updating
In-situ measurement
Numerical example
Parameter selecting
Prestressed reinforced
Regression techniques
Response surface method
Response surface models
Simply supported beams
Static and dynamic
Structure-based
Updated model
Lightweight design of large scale theodolite's turntable based on topology optimization of continuum structure (EI CONFERENCE)
会议论文
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
San X.
;
Wang Y.
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  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
In order to solve the problem that the weight of large scale theodolite's casting or steel plate welded structure is too heavy
lightweight design of large scale turntable based on topology optimization of continuum structure is investigated. Topology optimization could have better optimization efficiency because it can provide the optimized distribution of material and gain optimized structure in conceptual design phase of the structural design. In order to obtain lightweight and high stiffness structure
a truss turntable based on topology optimization of continuum structure is presented
and the validity of this lightweight structure is examined by finite element analysis. Comparing to the traditional welding steel turntable
the lightweight turntable
without changing the static displacement
can lose 386.48 kg(lightweight ratio is 26.7%)
and its first-order natural frequency raises from 167.02Hz to 173.71Hz. Meanwhile
in other aspects this turntable also has better performance than traditional structure. 2012 IEEE.
Design and implementation of a single actuated bio-mimetic robotic fish (EI CONFERENCE)
会议论文
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
Wan H.
;
Xu J.
;
Wang X.
;
Xu J.
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浏览/下载:47/0
  |  
提交时间:2013/03/25
The mechanical structure of a single actuated bio-mimetic robotic fish was designed based on forced vibration responses of a non-prismatic cantilever which mimicked the fish body deformation. To realize the cruising
turning and burst-and-coast moving modes
the hardware system based on the micro controller unit STM32F103C8T6 and the control were developed. The state variable feedback method and PID method were used to design the control algorithms respectively. The simulation and experimental results showed that the whole system could imitate the swimming of the real fish. 2012 IEEE.
Embedded image grabber and processing system based on camera link (EI CONFERENCE)
会议论文
2012 World Automation Congress, WAC 2012, June 24, 2012 - June 28, 2012, Puerto Vallarta, Mexico
Li J.
;
Gao H.
;
Wang Z.
;
Geng T.
;
Zhao Y.
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2013/03/25
In order to realize real-time measurement based on image
proposes a design project of embedded image grabber and processing system based on camera link interface. The system adopts FPGA+DSP structure design. DSP used to process the image and send out processing results to external. FPGA adopts modularize design. It contains camera link interface module
image memory module
DSP connection module and so on. The experiment results show that the system design flexibility
small cubage
high real-time image processing
and can fulfil the requirement of real-time measurement. 2012 TSI Press.
Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE)
会议论文
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
Zhang L.
;
Jia X.
;
Xie P.
;
Xing L.
收藏
  |  
浏览/下载:47/0
  |  
提交时间:2013/03/25
The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope
the structure should have high stiffness and high reliability and light weight. Compared with invar
aluminum alloy and titanium alloy
carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper
optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm
total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages
such as ultra-light weight
high stiffness and dimensional stability
etc. The optimization method and the baffle design can be helpful to other coaxial telescopes
such as Cassegrain
Gregorian and their subdivisions. 2012 IEEE.
An engineering analysis and research on center frame structure using casting of vehicle radar antenna pedestal (EI CONFERENCE)
会议论文
2012 International Conference on Industrial Design and Mechanical Power, ICIDMP 2012, July 10, 2012 - July 11, 2012, Huangshan, China
Chang F.
;
Liu W.
;
Li Y.
;
Wu M.
;
Wu Y.
;
Tian X.
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2013/03/25
According to the usage of vehicle radar antenna pedestal center frame
this article analyzes and compares the structure characteristic of welding and casting. We decide to adopt the casting structure and use special casting material ductile iron QT450-10. And we describe the casting material ductile iron QT450-10. Based on the center frame of using conditions
we analyze the deformation and stress of center frame by the finite element analysis software. The design is in line with the material allowable requirements and to meet the requirements of the system stiffness. (2012) Trans Tech Publications
Switzerland.
Study of horizontal shafting with spherical four-way structure (EI CONFERENCE)
会议论文
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
Yang L.
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
Altazimuth photoelectric theodolite level shaft U-type and T-type structure
but with the expanding field of applications of photoelectric theodolite
the horizontal shaft structure occur great changes. For example
in the marine environment
shipboard conditions
the instrument has a waterproof
corrosion-resistant
easy maintenance and other functions
while carrier-based optoelectronic devices from a single visible television configure the development of integrated infrared system and ranging system as one of the single-station measurement system
due to the spherical structure has sufficient internal space exactly adapted to this need. In this paper
the horizontal axis of a spherical four-way structure. From aspects of the spherical four-way split in the form and shafting design and finite element analysis of the detailed design. A spherical four-way horizontal axis system
diameter 550mm
weight 19kg sphere
in the 40kg load
the maximum deformation of 3.3m
fully meet the requirements. The shaft of the structure of the shaking is less than 2 arc seconds
the vibration test
the re-examination instrument accuracy change is less than 1 arc seconds. Verify that the structure is stable and reliable. 2012 IEEE.
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