为了揭示在高温情况下防热复合材料发生炭化烧蚀时的详细热响应,通过有限元数值模拟方法实现了对复合材料炭化烧蚀过程的计算.建立了防热复合材料炭化烧蚀过程数值分析的有限元模型,主要包括内部热解反应,材料质量损失,传热模型,表面炭层剥蚀模型,并对某炭/酚醛复合材料的烧蚀过程进行了数值模拟.结果表明,材料的烧蚀是多种因素综合作用的结果,随着烧蚀时间增加,材料内部会出现热解反应,并且发生炭化层、热解层和原始材料层的分层现象,各层随着时间向材料内部移动.壁面温度随着烧蚀量的增大而减小,材料的炭化烧蚀有效地起到了热防护效果.数值模拟结果满足研究项目要求.研究方法对任意的炭化烧蚀热防护材料均具有适应性.
参考文献
| [1] | Y.-K. Chen;f.s. Milos .Two-Dimensional Implicit Thermal Response and Ablation Program for Charring Materials[J].Journal of spacecraft and rockets,2001(4):473-481. |
| [2] | Hu Liangquan;Xiao Yongdong;Xue Zhongmin et al.Study on properties of the low material incorporated ablation and heat insulation[J].Journal of Functional Materials,2007,38(A08):3159-3161. |
| [3] | 曹震,赵晓华,谢慧才.碳纤维水泥基复合材料的阻-温特性[J].功能材料,2003(04):466-467. |
| [4] | Jean Lachaud;Yvan Aspa;Gerard L. Vignoles .Analytical modeling of the steady state ablation of a 3D C/C composite[J].International Journal of Heat and Mass Transfer,2008(9/10):2614-2627. |
| [5] | Wen-Shan Lin .Quasi-steady solutions for the ablation of charring materials[J].International Journal of Heat and Mass Transfer,2007(5/6):1196-1201. |
| [6] | A. J. Amar;B. F. Blackwell;J. R. Edwards .One-Dimensional Ablation Using a Full Newton's Method and Finite Control Volume Procedure[J].Journal of thermophysics and heat transfer,2008(1):71-82. |
| [7] | 易法军,刘永清,翟鹏程,匡松年.碳/酚醛复合材料烧蚀过程热应力分析[J].哈尔滨工业大学学报,2008(07):1081-1084. |
| [8] | 张明信.飞行加速度条件下绝热层烧蚀实验研究[J].固体火箭技术,1999(02):28-32. |
| [9] | 刘德英,王岳广,张友华,杨汝森.碳/酚醛复合材料烧蚀性能的实验研究[J].宇航材料工艺,2004(01):59-61. |
| [10] | Wei Heok Ng;Peretz P. Friedmann;Anthony M. Waas .Thermomechanical Behavior of a Damaged Thermal Protection System: Finite-Element Simulations[J].Journal of Aerospace Engineering,2012(1):90-102. |
| [11] | Sourabh Deshpande;Pavithran S;Venkatesh Iyer .A finite volume model of charring and ablation[J].Journal of Engineering Research and Studies,2011,2(01):147-153. |
| [12] | Mitchell, S.L.;Vynnycky, M. .An accurate finite-difference method for ablation-type Stefan problems[J].Journal of Computational and Applied Mathematics,2012(17):4181-4192. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%