采用球填充算法对两组真实泡沫材料微结构进行模型拟合,分别获得基于Laguerre模型的各向异性开孔泡沫材料与各向同性闭孔泡沫材料的微结构;同时结合Laguerre算法编程与有限元软件ABAQUS,开发了泡沫材料微结构的仿真软件VirtualTPS.最后讨论了低密度范围内,不同胞体体积变异系数与基体相对密度对泡沫结构相对弹性模量的影响,其数值分析结果表明,泡沫材料的相对弹性模量随体积变异系数变化较小,与相对密度呈幂指数关系.
参考文献
[1] | VAN DER BURG M W D;SHULMEISTER V .On the linear elastic properties of regular and random open-cell foams models[J].Journal of Cellular Plastics,1997,33(1):31-54. |
[2] | V. Shulmeister;M.W.D. Van der Burg;E. Van der Giessen .A numerical study of large deformations of low-density elastomeric open-cell foams[J].Mechanics of materials,1998(2):125-140. |
[3] | CLAUDIA LAUTENSACK;TETYANA SYCH .3D IMAGE ANALYSIS OF OPEN FOAMS USING RANDOM TESSELLATIONS[J].Image analysis and stereology,2006(2):87-93. |
[4] | 卢子兴,张家雷,王嵩.各向异性随机泡沫模型的弹性性能分析[J].北京航空航天大学学报,2006(12):1468-1471. |
[5] | 李旭东.复合材料微观组织结构的计算机可视化表征[C].2004年材料科学与工程新进展论文集,2004:1103-1111. |
[6] | Li XD .Visualized simulation and modularized architecture of microstructures for composite materials[J].Composite interfaces,2005(3/4):291-309. |
[7] | AURENHAMMER F .Power diagrams:properties,algorithms and applications[J].SIAM Journal on Computing,1987,16(1):78-96. |
[8] | Fitting Three-dimensional Laguerre Tessellations To Foam Structures[J].Journal of applied statistics,2008(9/10):p.985-995. |
[9] | He D.;Cai L.;Ekere NN. .Computer simulation of random packing of unequal particles[J].Physical review.E.Statistical physics, plasmas, fluids, and related interdisciplinary topics,1999(6 Pt.b):7098-7104. |
[10] | NOLAN G T;KAVANAGH P E .Computer simulation of random packings of spheres with lognormal distributions[J].Powder Technology,1993,76(3):309-316. |
[11] | Zhigang Fan;Yugong Wu;Xuanhe Zhao;Yuzhu Lu .Simulation of polycrystalline structure with Voronoi diagram in Laguerre geometry based on random closed packing of spheres[J].Computational Materials Science,2004(3):301-308. |
[12] | Lautensack C;Giertzsch M;Godehardt M;Schladitz K .Modelling a ceramic foam using locally adaptable morphology[J].Journal of Microscopy,2008(Pt.3):396-404. |
[13] | 任淮辉,李旭东.三维材料微结构设计与数值模拟[J].物理学报,2009(06):4041-4052. |
[14] | KANAUN S;TKACHENKO O .Mechanical properties of open cell foams:simulations by Laguerre tessellation procedure[J].International Journal of Fracture,2006,140(1):305-312. |
[15] | SILVA M J;GIBSON L J .The effect of non-periodic microstructure and defects on the compressive strength of two-dimensional cellular solids[J].International Journal of Mechanical Sciences,1997,39(5):549-563. |
[16] | GARBOCZI R A P .Elastic moduli of model random three dimensional closed-cell cellular solid[J].ACTA MATERIALIA,2001,49(2):189-197. |
[17] | GARBOCZI R A P .Elastic properties of model random three dimensional open-cell solid[J].Journal of the Mechanics and Physics of Solids,2002,50(1):33-55. |
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