TY - JOUR ID - 2751 TI - EVALUATING TOPOLOGY DESIGN OF MATERIAL LAYOUT IN STEEL PLATE STRUCTURES WITH HIGH STIFFNESS AND EIGENFREQUENCY JO - Iranian Journal of Science and Technology Transactions of Civil Engineering JA - IJSTC LA - en SN - 2228-6160 Y1 - 2015 PY - 2015 VL - 39 IS - C1 SP - 65 EP - 79 KW - Topology optimization KW - material layout KW - stiffness KW - eigenfrequency KW - Plate KW - SIMP DO - 10.22099/ijstc.2015.2751 N2 - This study presents optimal distributions of steel materials in steel thin plate structuresdetermined by using a classical element-wise and the present node-wise topology optimizationdesign methods for a dynamic problem. More specifically, the present article describes anapplication of a node-wise topology optimization technique to the problem of maximizingfundamental frequency for plane structure. The terms element-and node-wise indicate the use ofelement and node densities, respectively, as design parameters on a given design space. For adynamic free vibration problem, the objective function in general is to achieve maximumeigenfrequency with first-order eigenmode subject to a given limited material, since structureswith a high fundamental frequency have a tendency to be reasonably stiff. For both static anddynamic problems SIMP (Solid Isotropic Microstructure with Penalization for IntermediateDensity) material artificially penalizing the relation between density and stiffness is used in thisstudy, and an implemented optimization technique is the method of moving asymptotes usuallyused for topology optimization. Numerical applications topologically maximizing the first-ordereigenfrequency and depending on element or node densities as design parameters and variedboundary conditions to verify the present optimization design method provide appropriatemanufacturing information for optimally form-finding of steel materials with Poisson’s ratio of 0.3into thin plates. UR - https://ijstc.shirazu.ac.ir/article_2751.html L1 - https://ijstc.shirazu.ac.ir/article_2751_222e076399e5c646d72d5c3723f025ff.pdf ER -