Quantitative characterization of damage-aggravation effect caused by progressive damage

doi:10.1007/s10409-020-01002-w

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	Quantitative characterization of damage-aggravation effect caused by progressive damage
	Lin QD(林钦栋)1,2; Li SH(李世海)1,2 ; Feng C(冯春)1 ; Zhou D(周东)1
通讯作者	Feng, Chun(fengchun@imech.ac.cn)
发表期刊	ACTA MECHANICA SINICA
	2021-01-04
页码	17
ISSN	0567-7718
摘要	Aiming at the progressive damage phenomenon in geotechnical field, it attempts to study the effect of progressive damage on the macro-bearing capacity. Firstly, based on the theoretical analysis of a two-dimensional plane inside representative volume element, it is proposed that progressive damage will occur if the bearing capacity of microplanes is different. Besides, "damage-aggravation effect" is proposed according to the difference between the macro-bearing capacity of entire plane and the sum of bearing capacity of all microplanes when progressive damage occurs. Secondly, progressive damage ratio K-t is proposed to quantify "damage-aggravation effect". Finally, based on the rod model, the correspondence between K-t and some influence factors is studied by theoretical analysis and numerical simulation. The results show that "damage-aggravation effect" does exist, and the macro-bearing capacity of entire plane is less than the sum of bearing capacity of all microplanes when progressive damage occurs. If the bearing capacity of rods in the rod model obeys uniform distribution, as the minimum of bearing capacity increases linearly, the macro-bearing capacity increases linearly, and K-t decreases inversely.
关键词	Progressive damage Bearing strength Damage-aggravation effect Progressive damage ratio
DOI	10.1007/s10409-020-01002-w
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000604866800001
关键词[WOS]	FAILURE ANALYSIS ; CONSTITUTIVE MODEL ; ROCK SAMPLES ; MICROSTRUCTURE ; HETEROGENEITY ; MECHANISMS ; COLLAPSE ; STRENGTH ; SLOPE ; INITIATION
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
资助项目	National Key Research and Development Project of China ; Ministry of Science and Technology of China[2018YFC1505504]
项目资助者	National Key Research and Development Project of China ; Ministry of Science and Technology of China
论文分区	二类
力学所作者排名	1
RpAuthor	Feng, Chun
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85916
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lin QD,Li SH,Feng C,et al. Quantitative characterization of damage-aggravation effect caused by progressive damage[J]. ACTA MECHANICA SINICA,2021:17.
APA	林钦栋,李世海,冯春,&周东.(2021).Quantitative characterization of damage-aggravation effect caused by progressive damage.ACTA MECHANICA SINICA,17.
MLA	林钦栋,et al."Quantitative characterization of damage-aggravation effect caused by progressive damage".ACTA MECHANICA SINICA (2021):17.

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