IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2018  > Vol15 No.2
A theoretical model for the estimation of maximum impact force from a rockfall based on contact theory
ZHANG Shi-lin; YANG Xing-guo; ZHOU Jia-wen
Corresponding AuthorZHOU Jia-wen
2018-02
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume15Issue:2Pages:430-443
Subtype期刊论文
AbstractRockfall poses a great threat to buildings and personal security. To understand the dynamic characteristics of rockfalls is a prerequisite for disaster prevention and assessment. Models for rockfalls in different forms are established based on the theory of rigid body motion. The equivalent velocity considering the rotational effect is determined by the energy ratio. Besides, considering plastic deformation and nonlinear hardening, the maximum impact force is estimated based on the Hertz contact theory. Then, a case study is carried out to illustrate the applicability of the model and sensitive analyses on some affecting parameters are also made. Calculation results show that the maximum impact force increases with the increasing of incident velocity, angle and slope gradient reflected by the changing of energy ratio. Moreover, the model for the estimation of maximum impact force is validated by two different scales of experiments and compared with other theoretical models. Simulated maximum impact forces agree well with the experiments.
KeywordRockfall Motion Characteristics Contact Theory Maximum Impact Force
DOI10.1007/s11629-017-4606-6
Indexed BySCI
Language英语
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20857
CollectionJournal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.2
Recommended Citation
GB/T 7714
ZHANG Shi-lin,YANG Xing-guo,ZHOU Jia-wen. A theoretical model for the estimation of maximum impact force from a rockfall based on contact theory[J]. Journal of Mountain Science,2018,15(2):430-443.
APA ZHANG Shi-lin,YANG Xing-guo,&ZHOU Jia-wen.(2018).A theoretical model for the estimation of maximum impact force from a rockfall based on contact theory.Journal of Mountain Science,15(2),430-443.
MLA ZHANG Shi-lin,et al."A theoretical model for the estimation of maximum impact force from a rockfall based on contact theory".Journal of Mountain Science 15.2(2018):430-443.
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