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- 저자 : Zhong Gang Zhu(주중강) (검색결과 2 건)
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Simulation Analysis of Flexible Track Drilling Machines Based on ADAMS
Zhong-gang Zhu(주중강),Qi Zhang(장기),Jian-Hua Lv(려건화),Zhen Qin(진진),Sung-Ki Lyu(류성기) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.5
Flexible track drilling machines are credited with important applications in the area of aircraft manufacturing because of their portability, quick installation capabilities, and high efficiency. However, their structures are special and the constitution principles and motion characteristics are difficult to control, increasing the development costs and research cycle in the context of the technology blockade of foreign companies. The simulation analysis of flexible track drilling machines can be conducted by applying virtual prototypes, shortening the development cycle and reducing the cost. In this paper, a model of a machine is established by using the SolidWorks software and imported into ADAMS to conduct kinematic and dynamic simulation analysis. During the analysis, the feasibility of the configuration is checked, a reasonable driving motion is chosen, potential deficiencies are found, and improvement actions are raised.
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Study on the Reduction of Gear Whine Noise in Diesel Engine Gear Train
Qi Zhang(장기),Yong Bo Wang(왕용보),Jian Hua Lv(려건화),Zhong Gang Zhu(주중강),Zhen Qin(진진),Sung Ki Lyu(류성기) Korean Society for Precision Engineering 2019 한국정밀공학회지 Vol.36 No.9
Noise, Vibration and Harshness (NVH) is a comprehensive issue of manufacturing quality that gives the purchaser a superficial feeling. The NVH performance of the vehicle has undoubtedly become an important factor and basis for consumers. When the internal combustion engine is working, it generates a strong noise thus making it necessary to reduce the vibration and noise. The noise of diesel engine is divided into acoustic and structural radiation noise according to different radiation paths. The structure radiated noise is mainly caused by the combustion noise and mechanical transmission noise, while mechanical transmission noise is mainly generated by the meshing gears in the diesel. This paper aims to solve the problem of a diesel engine abnormal gear whine noise under idling conditions with a combination of simulation and experiment. By gear micro-modification, the gear train whine noise is reduced by minimizing the PPTE of the gear train. The comparison of the simulation to benching testing shows a good correlation. It provides an optional solution to the modification proposal of the engine gear train, which uses the similar structure for the engine. Future work will dwell on a better understanding of the gear rattle noise, which will be discussed later.
ScienceON
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