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Mathematical Problems in Engineering
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2014
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Article
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Tab 2
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Research Article
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