A Study for Analysis on Deformation of Rubble Mound Structure Using VOF and DEM Methods

Kim, Mi-Kum; Kim, Chang-Je

Journal of Navigation and Port Research 2010;34(6):435-440.
Published online August 30, 2010.

VOF법과 DEM에 의한 사석구조물 변형예측모델과 그 적용성에 관한 연구

김미금, 김창제

A Study for Analysis on Deformation of Rubble Mound Structure Using VOF and DEM Methods

Mi-Kum Kim, Chang-Je Kim

Abstract

A numerical model, which can compute deformation of rubble mound structures composed with various size materials, was proposed. In the numerical model, wave field into the mound structures was computed by CADMAS-SURF and the deformations of mound structures were computed by DEM. Interaction between wave field and sectional deformation of structure was considered and to present the variation of behaviors caused by various properties of materials, computation was carried out with random coefficients by Monte Carlo simulation method for contact stiffness and friction angle. The experiments were carried out with rubbles and glass balls with radius of 2.9cm, 2.6cm and 1.5cm. And the deformation characteristics of rubble mounds composed with various size materials were clarified. Furthermore the validity and the applicability of the model were discussed by comparing with the experimental results.

Key Words: DEM;Rubble mound;Contact stiffness;Monte Carlo simulation;CADMAS-SURF