Chiu, Chia-ChiChia-ChiChiuChen, Shi-FengShi-FengChenMENG-CHIA WENG2026-03-242026-03-242019https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101512379&doi=10.1007%2F978-3-319-95771-5_4&partnerID=40&md5=1d2548470b053dc4cb21f4931a4155dehttps://scholars.lib.ntu.edu.tw/handle/123456789/7367525th GeoChina International Conference on Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, 2018, 23 July 2018 through 25 July 2018, HangZhouThis study adopted the biconcave bond model of DEM (Discrete element method) to investigate the mechanical behavior of sandstone. The biconcave bond model is capable of simulating the cementation between non-contact grains of sandstone with high porosity. It also links the micro parameters and macro material properties. The biconcave bond model incorporated with grain-matrix structure was used to investigate the influence of grain and matrix on sandstone behavior. The simulation shows that the stress-strain curves fit experiment result well. In addition, the sensitivity analysis of GAR (Grain area ratio) and porosity shows that the simulation of UCS and Young’s modulus agree well with the empirical equation. © 2019, Springer International Publishing AG, part of Springer Nature.Discrete Element Method (DEM)Linear Contact ModelSandstone ModelSandstone PropertiesUniaxial Compressive Strength (UCS)conference paper10.1007/978-3-319-95771-5_42-s2.0-85101512379