Open AccessStudy on Dynamic Mechanical Properties of Limestone Under Impact Loading
Author(s) -
Renliang Shan,
Yun-Heub Song,
Zhang Haochen,
Mengnan Wang,
Xiao-lin Hao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/300/2/022150
Subject(s) - materials science , strain rate , strain (injury) , composite material , acoustic emission , dynamic load testing , fragmentation (computing) , compressive strength , geotechnical engineering , geology , medicine , computer science , operating system
In order to study the variation of the mechanical properties of limestone under the condition of impact load, the dynamic mechanical properties of limestone under different strain rate and cyclic impact conditions were studied. The results show that the uniaxial compressive strength of limestone is 93.76MPa and the acoustic velocity is 5122m·s -1 , and under the condition of single impact load, the peak stress and strain rate are positively correlated. The peak strain increases with the increase of strain rate, and the larger the strain rate, the more serious the fragmentation of limestone. Under the condition of cyclic impact load, the cumulative damage of limestone increases gradually, and the more impact times, the faster the increase speed.