期刊
POLYMER TESTING
卷 63, 期 -, 页码 349-359出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2017.08.020
关键词
PEEK; Uniaxial tension; Erichsen test; DSGZ model; Elevated temperature; Deformation behavior
资金
- National Natural Science Foundation Council of China [51575207]
- National Program on Key Basic Research Project [2013CB035805]
- Fundamental Research Funds for the Central Universities [2016YXZD059]
The present study investigates the deformation behavior of Poly-Ether-Ether-Ketone (PEEK) at elevated temperatures and low strain rates through a combination of experiments and simulations. Uniaxial tension tests at elevated temperatures (293-543 K) and strain rates (8.3 x 10(-3) to 3.3 x 10(-1) s(-1)) were performed, and the temperature- and rate-dependencies of the deformation behavior and mechanism of PEEK were discussed in detail. The Erichsen test was performed at temperatures varying from 473 to 533 K and a fixed speed of 1 mm/s. Based on an investigation of numerous constitutive models, a phenomenological model called DSGZ was employed in ABAQUS/Explicit to characterize the deformation behavior of PEEK at elevated temperatures, and the deviation between experimental and simulation data was less than 10% at large deformations. Moreover, the simulation results accurately predicted the necking and cold drawing phenomena in the tension test as well as the deformation in the Erichsen test. (C) 2017 Elsevier Ltd. All rights reserved.
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