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- 저자 : Yuanjie Tang (검색결과 2 건)
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Production Rate Determination for Linear Construction Projects Based on Linear Scheduling Method
Liqiang Liu,Yisheng Liu,Yuanjie Tang 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.4
Traditional scheduling methods such as CPM or PERT have been found to be inappropriate for scheduling the linear construction projects. According to the limitations of Traditional scheduling methods, Linear Scheduling Method (LSM) is proposed specifically for linear construction projects. Aiming at overcoming the limitations of network technology in deciding the production rate of linear construction projects, basing on LSM with its mathematical principle, this paper proposes a new method to decide the production rate of linear construction projects. This paper first analyses the parameters of linear scheduling method and their interrelationships, such as distance interval, time interval, activity, CAP determination of LSM. Then it gives determination method of production rate and the rate float. The determination method can increase the effectiveness of production rate input and output data for the linear projects, which will significantly improve the resource allocation. It also draws the effect of production rate float in the construction schedule control.
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Electro-hydraulic coupling jet printing technology based on Weissenberg effect under pulse voltage
Jing Wang,Xintao Wu,Wei Wang,Bing Xu,Yuanjie Fang,Jing Tang 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.6
In this paper, electro-hydraulic coupling jet printing technology based on the Weissenberg effect is put forward for the first time, and the pulse voltage is used to realize the on-demand printing. The experimental results show that the Weissenberg effect can inhibit the solution reflux and make the solution converge into a cone tip at the nozzle, which is more conducive to position printing precisely. By exploring the influence principles of process parameters on printing, it is found that droplet diameter is positively correlated with rotation speed and negatively correlated with voltage frequency. The printing frequency is negatively correlated with the rotation speed and positively correlated with the voltage frequency. However, the effect of voltage amplitude and duty ratio on the printing effect is not obvious in a certain range. It is found that the rotation speed of needle core within the range of 1800 r/min-7500 r/min can print out the ideal lattice structure, which proves the feasibility of this system to realize on-demand positioning printing. Finally, by using the printing equipment, the sacrificial layer structure of PDMS microfluidic chip was successfully made and the function of the microfluidic chip was realized, which further verified the practicability of the technical scheme proposed in this paper.
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