An Initial Damage Model of Rock Materials under Uniaxial Compression Considering Loading Rates

Existing rock material damage models always ignore the initial damage characteristics of rock materials, and the actual rock materials have initial damage characteristics. To consider the rock’s initial damage characteristics, a series of compression tests for yellow sandstone was carried out. First...

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Detalles Bibliográficos
Autores principales: Meng, Gang, Liu, Zhizhen, Cao, Ping, Zhang, Ziyang, Fan, Zhi, Lin, Hang, Deng, Huijuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9415197/
https://www.ncbi.nlm.nih.gov/pubmed/36013724
http://dx.doi.org/10.3390/ma15165589
Descripción
Sumario:Existing rock material damage models always ignore the initial damage characteristics of rock materials, and the actual rock materials have initial damage characteristics. To consider the rock’s initial damage characteristics, a series of compression tests for yellow sandstone was carried out. First, the acoustic emission characteristics and damage model of yellow sandstone, considering the loading rates, were analyzed. Second, an initial damage model, which can better describe the initial damage characteristics of yellow sandstone materials, is presented. The research results show that the strength and elastic modulus of yellow sandstone depends on the loading rate, and increases as the loading rate increases.