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

Table 5

Material parameters, design constraints, and search range of the spatial 25-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: −40 ksi, 40 ksi
Displacement	The allowable nodal displacement interval: −0.35 in., 0.35 in.
Search range
Shape variables
Sizing variables