基于析因设计的PTFE/Al/SiC力学响应多因素分析  

Multifactor Analysis of Mechanical Response of PTFE/Al/SiC Based on Factorial Design

作　　者：王瑞琪 李裕春 宋佳星 吴家祥 李镕辛 黄骏逸 WANG Rui-qi;LI Yu-chun;SONG Jia-xing;WU Jia-xiang;LI Rong-xin;HUANG Jun-yi(College of Field Engineering,Army Engineering University of PLA,Nanjing 210007,China;Xi'an Rare Metal Materials Research Institute Co.,Ltd.,Xi'an 710006,China)

机构地区：[1]陆军工程大学野战工程学院,江苏南京210007 [2]西安稀有金属材料研究院有限公司,陕西西安710006

出　　处：《含能材料》2023年第12期1224-1234,共11页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(51673213)。

摘　　要：为探究SiC质量分数、SiC粒径和Al粒径及其交互作用对PTFE/Al/SiC(PAS)反应材料力学性能的影响,通过23析因准则设计并制备了8种不同配比的PTFE/Al/SiC反应材料,并进行了准静态压缩实验和分离式霍普金森压杆实验。通过t值排序法筛选显著因子,并分析显著因子贡献率及扰动趋势。通过响应面法分析显著的交互作用。结果显示,较高的SiC质量分数对PTFE/Al/SiC材料的力学性能具有积极影响。在应变率突变的情况下,SiC粒径对材料力学响应产生了相反的扰动趋势。Al颗粒对于PAS材料系统的力学响应作用有限。强烈的因子交互作用不容忽视。在低应变率加载下,SiC质量分数/SiC粒径交互作用显著,当SiC质量分数高且粒径较小时,可以双重优化颗粒分散状态和界面结合强度,从而提高材料的力学响应。在高应变率加载下,较高SiC质量分数的PAS材料动态力学响应较高,且SiC粒径/Al粒径交互作用显著。当SiC与Al颗粒的粒径尺寸接近时,材料的动态响应值能够得到有效提高。To investigate the influence of SiC mass fraction,SiC particle size,Al particle size,and their interactions on the me-chanical properties of PTFE/Al/SiC(PAS)reactive materials,a 23 factorial design criterion was employed to design and prepare eight different compositions of PTFE/Al/SiC reactive materials,and quasi-static compression tests and split Hopkinson pressure bar(SHPB)experiments were conducted.Significant factors were selected using the t-value ranking method,and their contribu-tion rates and disturbance trends were analyzed.Additionally,response surface methodology was employed to analyze signifi-cant interaction effects.The results indicate that a higher SiC mass fraction positively impacts the mechanical properties of PAS materials.With a sudden change of strain rate,SiC particle size exhibits opposite disturbance trends on the material mechanical response.The effect of Al particles on the mechanical response of the PAS material system is limited.Strong interaction effects be-tween factors should not be overlooked.With low strain rate loading,the interaction between SiC mass fraction and SiC particle size is significant.When the SiC mass fraction is high and the particle size is small,the particle dispersion state and interfacial bonding strength can be optimized,thereby improving material mechanical response.With high strain rate loading,PAS materi-als with a higher SiC mass fraction exhibit higher dynamic mechanical response,and the interaction between SiC particle size and Al particle size is significant.When the particle sizes of SiC and Al are close,the dynamic response of the material can be ef-fectively improved.

关 键 词：聚四氟乙烯/铝/碳化硅(PTFE/Al/SiC) 析因设计 力学响应 多因素分析 响应面模型 

分 类 号：TJ450[兵器科学与技术—火炮、自动武器与弹药工程]