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A Thermal Viscoplasticity Model of PC/ABS Alloysbased on Endochronic Theory

Author: LuJiaBao
Tutor: ZhaoSheXu
School: Shanghai Jiaotong University
Course: Solid Mechanics
Keywords: PC/ABS alloys internal time thermal-viscoplastic constitutive model
CLC: TB324
Type: Master's thesis
Year: 2010
Downloads: 83
Quote: 0
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Abstract


Polymer alloy materials are widely used in various fields of recent industries. Due to the excellent formability, impact resistance In the low temperature, the higher heat-transfiguration point and the excellent photostability, the PC/ABS alloy has a broad prospect in the electronic industry, the electric appliances industry and the automobile industry,. So the research of the mechanical properties of the Polymer alloy materials of the PC/ABS which are widely-used is especially important.Focusing on the temperature-dependence, the rate-dependence and the strain hardening and/or softening behaviors of PC/ABS alloys under compression impact, this paper presented a rational internal time variable including the ABS toughening mechanism and developed a thermal-viscoplastic endochronic constitutive model. The model is used to simulate the true stress-strain relationships of PC/ABS alloys at 20℃and 70℃and at strain rates of 8 .0×102 s?1, 2 .7×103 s?1 and 1 .0×104 s?1. The validity of the model is verified through comparing the simulations with the experimental data in the reference.

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Non-metallic materials > Polymer materials
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