AN IMPROVED VERSION OF INVERSE DISTANCE WEIGHTING METAMODEL ASSISTED HARMONY SEARCH ALGORITHM FOR TRUSS DESIGN OPTIMIZATION

Authors

  • MOHAMMAD MAHDI SHAHBAZI UNIVERSITY OF TEHRAN, ENGINEERING OPTIMIZATION RESEARCH GROUP
  • YAGHOUB GHOLIPOUR UNIVERSITY OF TEHRAN, ENGINEERING OPTIMIZATION RESEARCH GROUP
  • ARASH BEHNIA UNIVERSITY MALAYA, ENGINEERING FACULTY, CIVIL ENGINEERING DEPARTMENT- STRUCTURE AND MATERIAL

Keywords:

SURROGATE-BASED OPTIMIZATION, METAMODELING, HARMONY SEARCH ALGORITHM, INVERSE DISTANCE WEIGHTING MODEL

Abstract

THIS PAPER FOCUSES ON A METAMODEL-BASED DESIGN OPTIMIZATION ALGORITHM. THE INTENTION IS TO IMPROVE ITS COMPUTATIONAL COST AND CONVERGENCE RATE. METAMODEL-BASED OPTIMIZATION METHOD INTRODUCED HERE, PROVIDES THE NECESSARY MEANS TO REDUCE THE COMPUTATIONAL COST AND CONVERGENCE RATE OF THE OPTIMIZATION THROUGH A SURROGATE. THIS ALGORITHM IS A COMBINATION OF A HIGH QUALITY APPROXIMATION TECHNIQUE CALLED INVERSE DISTANCE WEIGHTING AND A META-HEURISTIC ALGORITHM CALLED HARMONY SEARCH. THE OUTCOME IS THEN POLISHED BY A SEMI-TABU SEARCH ALGORITHM. THIS ALGORITHM ADOPTS A FILTERING SYSTEM AND DETERMINES SOLUTION VECTORS WHERE EXACT SIMULATION SHOULD BE APPLIED. THE  PERFORMANCE OF THE ALGORITHM IS EVALUATED BY STANDARD TRUSS DESIGN PROBLEMS AND THERE HAS BEEN A SIGNIFICANT DECREASE IN THE COMPUTATIONAL EFFORT AND IMPROVEMENT OF CONVERGENCE RATE.

 

Author Biographies

MOHAMMAD MAHDI SHAHBAZI, UNIVERSITY OF TEHRAN, ENGINEERING OPTIMIZATION RESEARCH GROUP

CIVIL ENGINEERING DEPARTMENT

YAGHOUB GHOLIPOUR, UNIVERSITY OF TEHRAN, ENGINEERING OPTIMIZATION RESEARCH GROUP

CIVIL ENGINEERING DEPARTMENT

Published

2013-01-28

Issue

Section

Articles