http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Weiping Shao (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Design and aerodynamic characteristic analysis of unfolding-bending bionic flapping-wing aircraft
Weiping Shao,Hui Zhang,Pengfei Zeng 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.6
A bionic flapping-wing aircraft model is designed in this study to achieve unfolding-bending effect of a bird’s wings during flight, realize active unfolding-bending movement, and demonstrate rapid return characteristic of flapping-bending motion. We use the new method of ADAMS and XFlow cosimulation to analyze its aerodynamic characteristics and investigate effects of flutter frequency, air flow velocity, fuselage angle of attack, and aileron torsion angle on its aerodynamic characteristics. Results showed that increasing the flapping frequency can significantly improve aerodynamic characteristics, increasing the air flow velocity will reduce aerodynamic characteristics, decreasing the fuselage angle of attack will reduce peak lift and increase peak thrust, and increasing the aileron torsion angle will reduce the rising resistance and increase forward thrust. The analysis results showed the excellent aerodynamic characteristics of the model.
-
Study on Components Durability Test Conditions Based on Combined Clustering and Markov Chain Method
Li Yaohua,Liu Yang,Shao Pandeng,Li Zetian,Song Weiping 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.3
The process of obtaining durability test conditions of bus components is complicated. A way to build components durability test conditions based on driving cycle is proposed. Pure electric urban bus driving cycle in Xi \'an based on running data is constructed based on combined clustering and Markov chain method, and simulation model of pure electric urban bus is built. The load conditions of the motor output shaft are obtained through simulation and calculation based on load torque applied on the motor shaft from simulation results based on actual drive cycle. The damage calculation method of motor output shaft under different load is constructed according to the liner fatigue cumulative damage theory and the material S-N curve. The four-peak-valley rain-flow counting method is used to calculate the damage of motor output shaft and the corresponding cycle life of motor shaft under different load conditions is determined. The motor speed condition and torque condition corresponding to driving cycle with the shortest life are selected as the motor output shaft durability testcondition.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
