Optimized design of primary load-bearing structure for earth observation micro-satellite

2015 ◽  
Vol 23 (11) ◽  
pp. 3183-3191 ◽  
Author(s):  
魏磊 WEI Lei ◽  
金光 JIN Guang ◽  
谢晓光 XIE Xiao-guang ◽  
张雷 ZHANG Lei ◽  
杨林 YANG Lin
Keyword(s):  
Earth Observation ◽  
Optimized Design ◽  
Load Bearing ◽  
Bearing Structure ◽  
Primary Load

The Modal Analysis and Modeling Study of the Spacecraft Payload Load-Bearing Floor Structure

2012 ◽  
Vol 226-228 ◽  
pp. 271-274
Author(s):  
Sheng Yang ◽  
Chen Chao Ma ◽  
Guo Feng Li ◽  
Rui Jie Wang
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Structural Design ◽  
Optimized Design ◽  
Element Analysis ◽  
Load Bearing ◽  
Shell Elements ◽  
Analysis Process ◽  
Space Industry ◽  
Bearing Structure

As space industry and technology develop, the spacecraft structure systems become increasingly complex and the scales become much larger. Early in the project stage, finite element analysis is required to rapidly and accurately analyze and forecast dynamic characteristics of spacecraft. Based on this, the optimized structural design of spacecraft is then determined. Theoretical analysis done, the effect of both the type and size of shell elements and solid elements on calculation result is discussed during the dynamic analysis process. Shell elements and solid elements are respectively used for the study on load-bearing structure of spacecraft payload instrument. The purpose is, based on meeting the requirement of accuracy, to quickly conduct finite element dynamic analysis of the structure in the early payload structural design and provide a reference for the optimized design of spacecraft structure.

scholarly journals Reliability as a Key Driver for a Sustainable Design of Adaptive Load-Bearing Structures

2022 ◽  
Vol 14 (2) ◽  
pp. 895
Author(s):  
Dshamil Efinger ◽  
Andreas Ostertag ◽  
Martin Dazer ◽  
David Borschewski ◽  
Stefan Albrecht ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Construction Materials ◽  
Internal Stresses ◽  
Elastic Model ◽  
Load Spectrum ◽  
Operating Life ◽  
Load Bearing ◽  
Linear Elastic ◽  
High Rise ◽  
Bearing Structure

The consumption of construction materials and the pollution caused by their production can be reduced by the use of reliable adaptive load-bearing structures. Adaptive load-bearing structures are able to adapt to different load cases by specifically manipulating internal stresses using actuators installed in the structure. One main aspect of quality is reliability. A verification of reliability, and thus the safety of conventional structures, was a design issue. When it comes to adaptive load-bearing structures, the material savings reduce the stiffness of the structure, whereby integrated actuators with sensors and a control take over the stiffening. This article explains why the conventional design process is not sufficient for adaptive load-bearing structures and proposes a method for demonstrating improved reliability and environmental sustainability. For this purpose, an exemplary adaptive load-bearing structure is introduced. A linear elastic model, simulating tension in the elements of the adaptive load-bearing structure, supports the analysis. By means of a representative local load-spectrum, the operating life is estimated based on Woehler curves given by the Eurocode for the critical notches. Environmental sustainability is increased by including reliability and sustainability in design. For an exemplary high-rise adaptive load-bearing structure, this increase is more than 50%.

Multi-condition optimization design of main load bearing structure of optical small satellite

2017 ◽  
Vol 46 (12) ◽  
pp. 1218004
Author(s):  
谭陆洋 Tan Luyang ◽  
王 栋 Wang Dong ◽  
李 林 Li Lin ◽  
谷 松 Gu Song ◽  
孔 林 Kong Lin
Keyword(s):  
Optimization Design ◽  
Small Satellite ◽  
Load Bearing ◽  
Condition Optimization ◽  
Bearing Structure

The Bridge over the Chomutovka River Valley

2017 ◽  
Vol 259 ◽  
pp. 130-134
Author(s):  
Radim Cihlář ◽  
Martin Nožička ◽  
Jakub Aubrecht
Keyword(s):  
Czech Republic ◽  
Pile Foundation ◽  
River Valley ◽  
Box Girder ◽  
The Czech Republic ◽  
Load Bearing ◽  
The Road ◽  
Planning Agency ◽  
The Village ◽  
Bearing Structure

The purpose of this article is to describe the construction of the bridge spanning the Chomutovka river valley as a part of the road I/27 bypassing the village of Velemyšleves. The investor of this project is Ředitelství silnic a dálnic ČR, správa Chomutov (Directorate for Roads and Motorways of the Czech Republic, division Chomutov). The general constructor of the entire project is the association of companies Silnice Group a.s. and AZ sanace a.s., the constructor of the foundations and the pile foundation is AZ Sanace a.s. and the constructor of the bridge is SMP CZ, a.s. The project execution documentation was carried out by the planning agency NOVÁK & PARTNER s.r.o. The designer and lead construction engineer of the project is Doc. Ing. Lukáš Vráblík, Ph.D.The structure is a seven-span bridge with a total length of 537 m. The load bearing structure, constructed using cantilever casting and supporting construction, consists of a seven-span continuous box girder with two frame connections. The whole structure is to be opened for public use by the end of this year.

scholarly journals Correction to: Stress and load-bearing structure analysis of the surrounding rock in a soft broken roadway

2020 ◽  
Vol 13 (23) ◽  
Author(s):  
Guangming Zhao ◽  
Chongyan Liu ◽  
Siming Kao ◽  
Xiaobo Zhang ◽  
Xiang Cheng
Keyword(s):  
Structure Analysis ◽  
Surrounding Rock ◽  
Load Bearing ◽  
Bearing Structure

Optimization of Composite Housing in a Multi-Special Camera Using Kriging Algorithm

2007 ◽  
Vol 334-335 ◽  
pp. 341-344
Author(s):  
Jung Sun Park ◽  
Jong Bin Im ◽  
Youg Hee Ro
Keyword(s):  
Optimization Problems ◽  
Earth Observation ◽  
Optimized Design ◽  
Space Filling ◽  
Design Constraints ◽  
Localization Method ◽  
Physical Problems ◽  
Classical Design ◽  
Effective Use ◽  
Space Filling Design

This paper is concerned with the optimization of composite housing in a multi-spectral camera using Kriging algorithm. The effective use of Kriging on physical problems has been expanded to provide global approximations for optimization problems. There are two major strategies to improve efficiency and accuracy of approximate optimization using Kriging. These methods are performed by the stochastic process, stochastic-localization method (SLM), as the criterion to move the local domains and the design of experiment (DOE), the classical design and space-filling design. The proposed methodology is applied to the design of a Multi-Spectral Camera (MSC), as a practical example, which will provide high resolution panchromatic and multi-spectral images and is carried by a satellite designed to fulfill the need for further Earth observation and allowing scientists and communication experts to conduct potentially valuable experiments. When this composite structure is optimized, design constraints are taken for natural frequency and shear stress which should be considered in a launching environment.

Sign in / Sign up

Export Citation Format

Share Document