TY - JOUR
ID - 3509
TI - LAYOUT AND SIZE OPTIMIZATION OF TRUSSES WITH NATURAL FREQUENCY CONSTRAINTS USING IMPROVED RAY OPTIMIZATION ALGORITHM
JO - Iranian Journal of Science and Technology Transactions of Civil Engineering
JA - IJSTC
LA - en
SN - 2228-6160
AU - KAVEH, A.
AU - ILCHI GHAZAAN, M.
AD - Centre of Excellence for Fundamental Studies in Structural Engineering, Iran University of Science and Technology,
Narmak, Tehran, P.O. Box 16846-13114, I. R. of Iran
Y1 - 2015
PY - 2015
VL - 39
IS - C2+
SP - 395
EP - 408
KW - Improved ray optimization
KW - multiple natural frequency constraints
KW - layout and size optimization
KW - truss structures
DO - 10.22099/ijstc.2015.3509
N2 - Natural frequency is one of the parameters that represent useful information about the dynamic behavior of structures. Controlling this parameter can decrease the probability of damage under dynamic loading. Weight optimization on layout and sizing with frequency constraints is a well known problem because of its highly non-linear behavior. Improved ray optimization (IRO) algorithm is utilized to solve truss layout and sizing optimization with multiple natural frequency constraints. This is a multi-agent algorithm and each agent is modeled as a ray of light with a location and direction. At each iteration, each light ray approaches a point which is defined based on the historically best position of the entire agents and the historically best positions of one agent to find the global or near-global optimum solution. To verify the efficiency of the IRO, five well-known benchmark problems are studied and their results illustrate the ability of the proposed algorithm in finding the optimal solution.
UR - https://ijstc.shirazu.ac.ir/article_3509.html
L1 - https://ijstc.shirazu.ac.ir/article_3509_dd607265164c9b2857d2c65e915f0423.pdf
ER -