Discrete Identification on Structural Element Stiffnessof Large Scale Structures from Static Responses

DISCRETE AND CONTINUOUS SIZING OPTIMIZATION OF LARGE-SCALE TRUSS STRUCTURES USING DE-MEDT ALGORITHM

Design optimization of structures with discrete and continuous search spaces is a complex optimization problem with lots of local optima. Metaheuristic optimization algorithms, due to not requiring gradient information of the objective function, are efficient tools for solving these problems at a reasonable computational time. In this paper, the Doppler Effect-Mean Euclidian Distance Threshold ...

Large-scale Parallel Discrete Element Simulations of Granular Flow

We present large-scale parallel direct numerical simulations of granular flow using a novel, portable software program for Discrete Element Method (DEM) simulations. Since particle methods provide a unifying framework for both discrete and continuous systems, we base the program on the ppm library [1], which has already been demonstrated to provide transparent parallelization and state-of-thear...

Iterative Methods for Large Scale Static Analysis of Structures on a Scalable Multiprocessor Supercomputer

Effect of Structural Height on the Location of Key Element in Progressive Collapse of RC Structures

After the failure of an element in a structure, its loads should be redistributed on the other elements and the structure must provide some new paths to carry the load. If such new load paths are not provided, collapse progression will begin in the structure. As the beginning of progressive collapse in a structure is more sensitive to the missing of an element, the location of that element is m...

DAMAGE IDENTIFICATION IN STRUCTURES USING TIME DOMAIN RESPONSES BASED ON DIFFERENTIAL EVOLUTION ALGORITHM

An effective method utilizing the differential evolution algorithm (DEA) as an optimisation solver is suggested here to detect the location and extent of single and multiple damages in structural systems using time domain response method. Changes in acceleration response of structure are considered as a criterion for damage occurrence. The acceleration of structures is obtained using Newmark me...