Fitness Estimation Based Particle Swarm Optimization Algorithm for Layout Design of Truss Structures

Table 2

Material parameters, design constraints, and search range of the planar 15-bar truss optimization problem.

Category	Values
Material Parameters
Density	0.1 lb/in^3
Modulus of elasticity	ksi
Constraints
Stress	The allowable elements stress interval: −25 ksi, 25 ksi
Search range
Shape variables	; ;
Sizing variables	= {0.111, 0.141, 0.174, 0.220, 0.270, 0.287, 0.347, 0.440, 0.539, 0.954, 1.081, 1.174, 1.333, 1.488, 1.764, 2.142, 2.697, 2.800, 3.131, 3.565, 3.813, 4.805, 5.952, 6.572, 7.192, 8.525, 9.300, 10.850, 13.330, 14.290, 17.170, 19.180} in.^2