Vol.26, No.1, 2026, pp. 164–170
https://doi.org/10.69644/ivk-2026-01-0164

DYNAMIC RESPONSE OF A CRACKED STRUCTURE INFLUENCED BY MICROMECHANICAL PARAMETERS OF SAND SUPPORTING

Said Derbane1* , Hillal Ayas2 , Mouloud Manfisouri3 

1) Department of Civil and Hydraulic Engineering, Faculty of Science and Technology, University of Jijel 18000, ALGERIA

S. Derbane https://orcid.org/0009-0003-7773-5806 , *email: said.derbane@univ-jijel.dz , derbane_said@yahoo.fr

2) Built Environmental Research Lab, Department of Structures and Materials, Civil Engineering Faculty, USTHB, ALGERIA

H. Ayas https://orcid.org/0000-0002-9498-5888

3) Civil Engineering Research Laboratory of Setif (LRGCS), Department of Civil Engineering, Ferhat Abbas University of Setif, Setif 19000, ALGERIA   M. Manfisouri https://orcid.org/0000-0002-4179-7488

 

Abstract

Response of cracked structure under dynamic loading depends on several parameters such as the stiffness of structure and the nature of the soil implanted under the structure. The paper deals with dynamic response of a damaged structure implanted on a sand deposit. The sand profile is modelled using discrete element approach. Micromechanics parameters of sand such as density, granular contact forces, elastic and viscous damping parameters, are taken into account in the modelling of wave propagation through sand profiles studied up to the free surface with the aim of using a vertical dynamic component to excite the damaged structure. The state of the structure in terms of damage presence is treated in a rough way using a damage model of approved effectiveness; the degree of damage has remarkable influences on the evolution of displacements, velocities and accelerations.

Keywords: • structure • dynamics • crack • sand deposit • micromechanics parameters • discrete element method 

full article (1.6 MB)