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Surface Accuracy Analysis of Space Cable Net Structue

Author: RongYouLan
Tutor: ZhengFei
School: Xi'an University of Electronic Science and Technology
Course: Mechanical Manufacturing and Automation
Keywords: Cable net structure Type surface accuracy Heat distortion Thermal analysis Rms value
CLC: TN823.27
Type: Master's thesis
Year: 2011
Downloads: 24
Quote: 0
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Abstract


This paper summarizes the first at home and abroad in recent years developed a variety of the composition of the structure of the cable network antenna , focused primarily on the type of surface accuracy . It also presents the analysis of the structure of the cable net , using the finite element software ANSYS Parametric Modeling Language APDL established finite element model of the two antennas : a diameter of 7.6 ASTROMESH antenna and caliber 5m antenna ring post . For ASTROMESH antenna , its simplified model and the complete model weightless effect form-finding analysis ; ring pillar antenna , its weightless and gravity both cases , the form-finding analysis . Based on the above form finding results calculated mesh node root mean square error value when the antenna is in equilibrium . From the calculated results shows that the mesh precision to meet the design requirements described in this article analysis method is reasonable . Secondly m , given in the literature antenna under a sun , 0.5 sun , 0.25 sun, temperature data 0 when the sun shines , it is loaded into the two antennas on the corresponding node of the finite element model analysis of the antenna due to thermal impact caused by the structural deformation, and to calculate the net surface node root mean square error value . The result is close to the results of the simulation with the literature in the description of this analysis process is correct . Finally, the surrounding ring truss antenna on-orbit thermal analysis . First, using the I-DEAS software model of the antenna , and then use its TMG module respectively solving the sun at the vernal equinox , summer solstice , autumnal equinox , winter solstice , the antenna is located in the sun is according to 0 ° , the sun side according to 90 ° , the sun shadow zone overall temperature of 180 °, 270 ° sun side according contours . The simulation results show that the the antenna overall temperature distribution is more in line with the actual situation . The above calculation and simulation results necessary theoretical foundation for further study of the antenna , has a certain reference value .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: a variety of structural forms in > Antenna
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