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大型飞机荷载作用下SEA道面结构响应分析
SEA机场道面 A380-800飞机 结构响应 ANSYS Bisar
2019/4/16
利用Bisar及ANASYS建立新型环氧沥青混凝土道面（SEA）结构模型，通过分析A380-800飞机主起落架构造及多项荷载参数，对飞机荷载作用下SEA机场道面面层应力、应变及弯沉等结构响应进行分析，并拟合Bisar三阶差值三维弯沉图。结果表明，A380飞机荷载作用在SEA道面上时，A380飞机主起落架前六轮主要承受载荷，应力应变分布较为均匀，出现双峰值现象；后四轮纵向应力应变较横向大，易出现应力...
HIMAWARI-8 GEOSTATIONARY SATELLITE OBSERVATION OF THE INTERNAL SOLITARY WAVES IN THE SOUTH CHINA SEA
Himawari-8 Advanced Himawari Imager Internal Solitary Waves South China Sea
2018/5/14
The new generation geostationary meteorological satellite, Himawari-8 (H-8), was launched in 2015. Its main payload, the Advanced Himawari Imager (AHI), can observe the earth with 10-minute interval a...
COMPARISON OF TWO SATELLITE IMAGING PLATFORMS FOR EVALUATING SAND DUNE MIGRATION IN THE UBARI SAND SEA (LIBYAN FAZZAN)
Sand dunes Sahara , Remote Sensing
2015/5/7
Sand dunes can change location, form or dimensions depending on wind direction and strength. Sand dune movements can be effectively monitored through the comparison of multi-temporal satellite image...
针对高超声速飞行器在服役中的高温和高声强环境,分别从高温引起的结构附加热应力和材料物性改变出发,以X-43A为研究对象,使用混合有限元-统计能量分析(FE-SEA)法对其在高温环境、165 dB声压作用下的声振特性进行数值分析。建立由结构FE模型和内声场SEA模型构成的混合声振系统,得到1 800 Hz宽频范围内结构表面响应,并对其能量在空间和频域内的分布进行分析。结果表明:自由状态下,热应力对结...
Research on Tracking Approach to Low-flying Weak Small Target near the Sea
Sea-level line Target tracking Sobel Linear least squares fitting
2011/12/12
Automatic target detection is very difficult in complicate background of sea and sky because of the clutter caused by waves and clouds nearby the sea-level line. In this paper, in view of the low-flyi...