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A damage model of mechanical behavior of porous materials: Application to sandstone
Li MY1,2; Cao YJ2,3; Shen WQ2; Shao JF2

In this work, a multiscale model based on the Fast Fourier Transform (FFT) technique is applied to describe the mechanical behavior of porous materials. The effects of the microstructures (such as pore shape, number, size, distribution and orientation) on the overall strength of the porous medium and its microstress distribution are fully studied. The elastoplastic model is further extended by including a damage process. The influences of microstructure on the damage evolution of the porous medium are discussed and illustrated numerically. Then the proposed multiscale damage model is applied to study the macroscopic behavior of porous sandstone. According to the microstructure of the studied material, a representative elementary volume with randomly distributed spherical pores is considered. The solid phase of the sandstone is assumed to obey the Drucker-Prager criterion. Taking advantage of the FFT-based method, the evolution of generated damage is clearly illustrated during the loading process at the microscopic level. Comparisons between numerical results and experimental data show the efficiency of the proposed numerical model.

KeywordHomogenization Fast Fourier Transform Plasticity Damage Porous Material
Indexed BySCI ; EI
WOS IDWOS:000441978100003
WOS KeywordGreen Type Matrix ; Approximate Models ; Ductile Metals ; Macroscopic Criterion ; Nonlinear Composites ; Ellipsoidal Cavities ; Nonspherical Voids ; Numerical-method ; Yield Criteria ; Flow Rules
WOS Research AreaMaterials Science, Multidisciplinary ; Mechanics
WOS SubjectMaterials Science ; Mechanics
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Univ Lille, CNRS, LML, UMR 8107, F-59655 Villeneuve Dascq, France
3.Hohai Univ, Geotech Res Inst, Nanjing, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Li MY,Cao YJ,Shen WQ,et al. A damage model of mechanical behavior of porous materials: Application to sandstone[J]. INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,2018,27(9):1325-1351.
APA Li MY,Cao YJ,Shen WQ,&Shao JF.(2018).A damage model of mechanical behavior of porous materials: Application to sandstone.INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,27(9),1325-1351.
MLA Li MY,et al."A damage model of mechanical behavior of porous materials: Application to sandstone".INTERNATIONAL JOURNAL OF DAMAGE MECHANICS 27.9(2018):1325-1351.
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