全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
力学学报  2015 

含能单晶微纳米力学性能试验研究及数值表征

DOI: 10.6052/0459-1879-14-160, PP. 95-104

Keywords: 含能单晶,微纳米压痕,力学性能参数

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用微纳米压痕实验测定β-HMX单晶(010)晶面和α-RDX单晶(210)晶面的力学性能参数和微观破坏特征,并利用数值拟合确定了含能单晶的部分本构参数.通过微纳米压痕实验连续刚度法(CSM)得到HMX单晶和RDX单晶的弹性模量和硬度,RDX单晶的硬度和模量都大于HMX单晶,其硬度值均表现出一定的尺寸效应.利用原子力显微镜(AFM)分析了HMX单晶和RDX单晶的微观破坏机理,裂纹随着载荷的增大生成并扩展,裂纹面产生方向为晶体的最易解理破坏方向.利用ABAQUS有限元软件进行了纳米压痕数值模拟,结合微纳米压痕实验加卸载曲线,选取了合适的含能单晶塑性损伤本构模型的损伤本构参数.

References

[1]  Hooks DE, Ramos KJ, Martinez AR. Elastic-plastic shock wave profiles in oriented single crystals of cyclotrimethylene trinitramine (RDX) at 2.25GPa. Journal of Applied Physics, 2006, 100(2): 024908
[2]  Hooks DE, Ramos KJ. Initiation mechanisms in single crystal explosives: dislocations, elastic limits and initiation thresholds. In: Proc. of Thirteenth International Detonation Symposium, 2006: 351-07
[3]  Walley SM, Field JE, Greenaway MW. Crystal sensitivities of energetic materials. Materials Science and Technology, 2006, 22(4): 402-413
[4]  Armstrong RW. Dislocation mechanisms for shock-induced hot spots. Le Journal de Physique IV, 1995, 5(C4): C4-89-C4-102
[5]  Armstrong RW. Dislocation - assisted initiation of energetic materials. Central European Journal of Energetic Materials, 2005, 2 (3): 55-69
[6]  Walley SM, Field JE, Greenaway MW. Crystal sensitivities of energetic materials. Materials Science and Technology, 2006, 22(4): 402-413
[7]  Dick JJ, Ritchie JP. Molecular mechanics modeling of shear and the crystal orientation dependence of the elastic precursor shock strength in pentaerythritol tetranitrate. Journal of Applied Physics, 1994, 76(5): 2726-2737
[8]  Dick JJ, Hooks DE, Menikoff R, et al. Elastic-plastic wave profiles in cyclotetramethylene tetranitramine crystals. Journal of Applied Physics, 2004, 96(1): 374-379
[9]  Dick JJ, Mulford RN, Spencer WJ, et al. Shock response of pentaerythritol tetranitrate single crystals. Journal of Applied Physics, 1991, 70(7): 3572-3587
[10]  Hagan JT, Chaudhri MM. Fracture surface energies of high explosives PETN and RDX. Journal of Materials Science, 1977, 12(5): 1055-1058
[11]  Palmer SJP, Field JE. The Deformation and Fracture of β-HMX. A. Mathematical and Physical Sciences, 1982, 383(1785): 399-407
[12]  Zaug JM. Elastic constants of b-HMX and tantalum, equations of state of supercritical fluids and fluid mixtures and thermal transport determinations. In: Proceedings of the 11th International Detonation Symposium, Snowmass, CO, 1998
[13]  Stevens LL, Eckhardt CJ. The elastic constants and related properties of β-HMX determined by Brillouin scattering. The Journal of Chemical Physics, 2005, 122: 174701
[14]  Haycraft JJ, Stevens LL, Eckhardt CJ. The elastic constants and related properties of the energetic material cyclotrimethylene trinitramine (RDX) determined by Brillouin scattering. The Journal of Chemical Physics, 2006, 124: 024712
[15]  Sewell TD. A molecular dynamics simulation study of elastic properties of HMX. The Journal of Chemical Physics, 2003, 119: 7417
[16]  Menikoff R, Dick JJ, Hooks DE. Analysis of wave profiles for single-crystal cyclotetramethylene tetranitramine. Journal of Applied Physics, 2004, 97(2): 023529
[17]  Conroy MW, Oleynik II, Zybin SV, et al. First-principles anisotropic constitutive relationships in β -cyclotetramethylene tetranitramine (β -HMX). Journal of Applied Physics, 2008, 104(5): 053506
[18]  Rae PJ, Hooks DE, Liu C. The stress versus strain response of single β -hmx crystals in quasi-static compression. In: Proceedings of the Thirteenth International Detonation Symposium, Office of Naval Research, 2006
[19]  Ramos KJ, Hooks DE, Bahr DF. Direct observation of plasticity and quantitative hardness measurements in single crystal cyclotrimethylene trinitramine by nanoindentation. Philosophical Magazine, 2009, 89(27): 2381-2402
[20]  Oliver WC, Pethica JB. U.S. Patent [R] No.4848141
[21]  Pharr GM, Oliver WC, Brotzen FR. On the generality of relationship among contact stiffness, Contact area, and elastic modulus during indentation. Mater Res, 1992, 7: 613-617
[22]  张泰华,杨业敏.纳米硬度技术的发展和应用.力学进展, 2002, 32(3): 349-363 (Zhang Taihua, Yang Yemin. Development and application of nano hardness techniques. Advances in Mechanics, 2002,32(3):349-363 (in Chinese))
[23]  Gong J, Wu J, Guan Z. Examination of the indentation size effect in low-load Vickers hardness testing of ceramics. Journal of the European Ceramic Society, 1999, 19(15): 2625-2631
[24]  Atkinson M. Further analysis of the size effect in indentation hardness tests of some metals. Journal of Materials Research, 1995, 10(11): 2908-2915
[25]  易大可, 王自强. 能量非局部模型和新的应变梯度理论. 力学学报, 2009, 41(1): 60-66 (Yi Dake,Wang Ziqiang. Energy non-local model and new strain gradient theory. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(1): 60-66 (in Chinese))
[26]  Abaqus Users Manual, Version 6.8, Simulia Inc, 2012.
[27]  Yu T, Teng JG, Wong YL, et al. Finite element modeling of confined concrete-II: Plastic-damage model. Engineering Structures, 2010, 32(3): 680-691
[28]  Jankowiak T, Lodygowski T. Identification of parameters of concrete damage plasticity constitutive model. Foundations of Civil and Environmental Engineering, 2005, 6: 53-69

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133