轻质热防护系统波纹夹芯结构热力耦合分析

王琪; 吉庭武; 谢公南; 张卫红

doi:10.3879/j.issn.1000-0887.2013.02.007

轻质热防护系统波纹夹芯结构热力耦合分析

doi: 10.3879/j.issn.1000-0887.2013.02.007

西北工业大学机电学院,工程仿真与宇航计算技术联合实验室,西安 710072

基金项目: 国家自然科学基金资助项目(11202164； 10925212； 90916027)；教育部高等学校博士学科点专项科研基金资助项目(20116102120021)

详细信息

作者简介:
王琪(1988—),男,湖南人,硕士(E-mail: nwpuwq@mail.nwpu.edu.cn);谢公南(1980—),男,广东人,副教授,博士(通讯作者. E-mail: xgn@nwpu.edu.cn).

中图分类号: V19;O343.6
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- 文章访问数: 2223
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出版历程
- 收稿日期: 2012-12-24
- 修回日期: 2012-01-15
- 刊出日期: 2013-02-15

Structural Analysis of Corrugated-Core Sandwich Panels for Lightweight Thermal Protection System

Engineering Simulation and Aerospace Computing, School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, P.R.China

摘要

摘要: 高超声速飞行器在出入大气层或持续在空间飞行时，将遭受严苛的气动加热载荷．对热防护系统进行传热分析是进行热力耦合分析的基础，而温度分布的特点直接影响到波纹夹芯结构的热应力等问题．首先对一体化热防护系统（integrated thermal protection system， ITPS）进行隔热性能分析，得到整个结构的温度场；然后采用顺序耦合的数值方法，模拟分析ITPS波纹夹芯结构单胞的热力耦合性能，给出波纹夹芯结构在静力载荷以及热力耦合载荷条件下的应力场、位移场，并对计算结果进行了讨论．结果表明波纹夹芯结构在初始尺寸及约束条件下，只满足在高温热流作用下飞行器低压区使用，而当气动压力大于等于15 000 Pa时，结构将发生破坏．
- 热防护系统 /
- 热力耦合 /
- 轻质 /
- 热应力
Abstract: Hypersonic aircrafts enter across the atmosphere with high flight speed and over a long period of time, resulting in an intense aerodynamic heating load. Thermal analysis of thermal protection system (TPS) is the base of thermalmechanical coupling analysis; and the characteristics of temperature distribution affect thermal stress of corrugated sandwich structure directly. The analysis process was divided into three steps. The insulation performance of the integrated thermal protection system (ITPS) was analyzed to get the temperature distribution firstly. Then a sequence coupled numerical method was used to simulate the thermomechanical coupling performance of ITPS. Finally the stress field and displacement field of the corrugated sandwich structure unit cell were obtained and results were discussed. The calculation results show that the structure with initial size and constraints only satisfy the use of lowpressure zone, and structure will fail when the pressure is greater than 15 000 Pa.
- thermal protection system /
- thermalmechanical coupling /
- lightweight /
- thermal stress

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参考文献(20)

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轻质热防护系统波纹夹芯结构热力耦合分析

doi: 10.3879/j.issn.1000-0887.2013.02.007

作者简介:
王琪(1988—),男,湖南人,硕士(E-mail: nwpuwq@mail.nwpu.edu.cn);谢公南(1980—),男,广东人,副教授,博士(通讯作者. E-mail: xgn@nwpu.edu.cn).

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Structural Analysis of Corrugated-Core Sandwich Panels for Lightweight Thermal Protection System

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轻质热防护系统波纹夹芯结构热力耦合分析

doi: 10.3879/j.issn.1000-0887.2013.02.007

作者简介: 王琪(1988—),男,湖南人,硕士(E-mail: nwpuwq@mail.nwpu.edu.cn);谢公南(1980—),男,广东人,副教授,博士(通讯作者. E-mail: xgn@nwpu.edu.cn).

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Structural Analysis of Corrugated-Core Sandwich Panels for Lightweight Thermal Protection System

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出版历程

目录

作者简介:
王琪(1988—),男,湖南人,硕士(E-mail: nwpuwq@mail.nwpu.edu.cn);谢公南(1980—),男,广东人,副教授,博士(通讯作者. E-mail: xgn@nwpu.edu.cn).