Sound field simulation and experimental study in polymer ultrasonic plasticizing process

被引：0
|
作者：
Zhang S. [1 ]
Jiang B. [1 ]
Peng H. [1 ]
Jia Y. [1 ]
Liu X. [1 ]
机构：
[1] State Key Laboratory of High-Performance Complex Manufacturing, Central South University, Changsha
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2016年 / 47卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Plasticization; Polymer; Sound field; Sound pressure; Ultrasound;
D O I：
10.11817/j.issn.1672-7207.2016.08.017
中图分类号：
学科分类号：
摘要：
The simulation and experiment research was conducted aiming at the problem of ultrasonic acoustic field distribution in polymer ultrasonic plasticizing process. The ultrasonic acoustic field in plasticization process was simulated based on the superposition of Gaussian beams theory. And the acoustic field distribution discipline of polymer was studied by self-designed polymer ultrasonic plasticization device. The results show that the actual ultrasonic acoustic pressure of polymer reaches approximately the maximum value of 1.8 MPa at the distance of approximately 1.5 mm. And the value decreases with the increase of distance. Compared to the simulation, the actual ultrasonic sound pressure has less fluctuant but stable in near field region. However, the pressure in far field region has ideal coincidence between experiment and simulation results. The solidified polymer is subjected by higher ultrasonic sound pressure than melted polymer. The actual pressure is lower than the simulated value due to the existence of reflection, penetration, attenuation in sound pressure and friction between granules. © 2016, Central South University Press. All right reserved.
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页码：2661 / 2667
页数：6
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