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2 results on '"Li, Ru-Feng"'

1. New Vacuum Solar Telescope and Observations with High Resolution

Author

Liu, Zhong, Xu, Jun, Gu, Bo-Zhong, Wang, Sen, You, Jian-Qi, Shen, Long-Xiang, Lu, Ru-Wei, Jin, Zhen-Yu, Chen, Lin-Fei, Lou, Ke, Li, Zhi, Lu, Guang-Qian, Xu, Zhi, Rao, Chang-Hui, Hu, Qi-Qian, Li, Ru-Feng, Fu, Hao-Wen, Bao, Men-Xian, Wu, Ming-Chan, and Zhang, Bo-Rong

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

The New Vacuum Solar Telescope (NVST) is a 1 meter vacuum solar telescope that aims to observe the fine structures on the Sun. The main tasks of NVST are high resolution imaging and spectral observations, including the measurements of solar magnetic field. NVST is the primary ground-based facility of Chinese solar community in this solar cycle. It is located by the Fuxian Lake of southwest China, where the seeing is good enough to perform high resolution observations. In this paper, we first introduce the general conditions of Fuxian Solar Observatory and the primary science cases of NVST. Then, the basic structures of this telescope and instruments are described in detail. Finally, some typical high resolution data of solar photosphere and chromosphere are also shown., Comment: 16 pages, 14 figures, accepted by RAA (Research in Astronomy and Astrophysics)

Published
2014

2. The elasto-plastic strain analysis of notched plate under cyclic loading—An application of plastic anisotropic hardening theory

Author

Gou Qiu-jing, Zhou Chun-tian, Jin Yong-jie, and Li Ru-feng

Subjects
Materials science, Mechanics of Materials, Engineering structures, Applied Mathematics, Mechanical Engineering, Elasto plastic, Hardening (metallurgy), Bauschinger effect, Cyclic loading, Kinematic hardening, Composite material, Strain hardening exponent, Anisotropy
Abstract

In order to predict the life of engineering structures, it is necessary to investigate the strain distribution in notched members. In general, the Bauschinger Effect of materials under cyclic loading is not negligible, and so the anisotropic hardening model has been suggested. From the comparison between the calculated and experimental results in this paper, we can see that even the linear kinematic hardening model is quite suitable for strain analysis under cyclic loading.

Published
1989

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