| Titre : |
Influence of ultrasonic transducer structural parameters on the frictional plasticizing heat generation of polymer particles |
| Type de document : |
texte imprimé |
| Auteurs : |
X. Li, Auteur ; H.-G. Tian, Auteur ; W.-W. Zhang, Auteur ; S.-C. Zhang, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 416–424 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Interfaces (Sciences physiques)
Matériaux piézoélectriques
Plastification
Thermocinétique
Transducteurs ultrasonores
Ultrasons
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
This paper explores the influence of structural parameters of ultrasonic transducer on the frictional plasticizing heat generation of polymer particles. A three-dimensional model of the interfacial friction plasticizing heating was established, and a transducer with different structural parameters was designed and analyzed. The actual output longitudinal vibration excitation of the transducer obtained by simulation analysis was directly loaded into the heating model, which further investigated the effect of various structural parameters on the frictional plasticizing heating process and temperature distribution of polymer particles. The results demonstrated that the interfacial friction plasticizing heating temperature of polymer particles increases nonlinearly with the longitudinal vibration excitation time, and the heat generation is a transient process. The amplification ratio has the greatest influence on the interfacial friction plasticizing heating rates of polymer particles, followed by both front cover length and piezoelectric ceramic pieces thickness; the effects of length of rear cover, horn and ultrasonic tool head are the smallest. The present work provides an effective basis for further studying the ultrasonic plasticizing of polymer particles in ultrasonic micro-molding. |
| Note de contenu : |
- SYSTEM COMPONENTS
- DESIGN AND SIMULATION ANALYSIS : Structure design - Modal and transient analysis
- SIMULATION METHOD : Theory of interfacial friction plasticizing heat generation - Model of interfacial friction plasticizing heating
- RESULTS AND DISCUSSION : Interfacial friction plasticizing heating process - Interfacial friction plasticizing heating rate |
| DOI : |
10.3139/217.3671 |
| En ligne : |
https://drive.google.com/file/d/1fI-Ro8Zyf6k4l-7lJwBDnoGO13TDyxuk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33060 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 4 (08/2019) . - p. 416–424
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