燃气舵表面 ZrO2涂层热结构耦合分析

曹奔; 黄贞益; 牛亚然; 谢玲玲; 郑学斌

doi:10.15892/j.cnki.djzdxb.2016.02.036

2016 , Vol. 36 >Issue 2: 147 - 150

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2016.02.036

摘要

基于流体计算软件FLUENT和有限元分析软件ANSYS对燃气舵表面ZrO₂涂层进行了热结构耦合的分析,主要对不同厚度(0.5mm,1.0mm和1.5mm)ZrO₂涂层表面的瞬态温度及其引起的相变和热应力进行了研究。结果表明,ZrO₂涂层的厚度增加后应力值增大导致超过其屈服强度以及ZrO₂涂层温度达到相变温度引发相变是其失效的主要原因;燃气舵的失效与ZrO₂涂层的失效密切相关。计算结果对探究“消熔舵”技术中ZrO₂涂层及燃气舵的失效行为有一定的指导意义。

关键词： 燃气舵; 等离子喷涂; 热结构耦合; 数值计算

本文引用格式

曹奔 , 黄贞益 , 牛亚然 , 谢玲玲 , 郑学斌 . 燃气舵表面 ZrO₂涂层热结构耦合分析[J]. 弹箭与制导学报, 2016 , 36(2) : 147 -150 . DOI: 10.15892/j.cnki.djzdxb.2016.02.036

Abstract

Coupled thermal and structural analysis of gas vane with plasma-sprayed ZrO₂ coating was investigated based on computational fluid dynamics (CFD) numerical simulation software FLUENT and finite element method(FEM) analysis software ANSYS. Phase transformation and thermal stress along with the transient temperature of ZrO₂ coating with different coating thickness (0.5 mm, 1.0 mm and 1.5 mm, respectively) were mainly discussed. The results show that the stress of ZrO₂ coating increases with increasing the thickness of ZrO₂ coating, when it reaches the yield point would lead to failure of ZrO₂ coating. Simultaneously, reaching the phase transition temperature is as well an important factor for failure of ZrO₂ coating. Failure of gas vane is closely related to failure of ZrO₂ coating. The result is of certain guiding significance to explore failure of ZrO₂ coating and gas vane in "melting vane" technique.

Key words： gas vane; plasma spray; coupled thermal and structural analysis; numerical simulation

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