Relationship between Spacing Rasio and Stiffness Coefficient by Using Smoothed Particle Hydrodynamics Method to Simulate Water – Solid InteractionAnisa Wulandari, R.R Dwinanti Rika, Jessica Sjah and Herr SoeryantonoE3S Web Conf., 95 (2019) 02011DOI: https://doi.org/10.1051/e3sconf/20199502011