Optimal design of civil engineering structures using optimality criteria methods
Young-Shik Chung
2134/33077
https://repository.lboro.ac.uk/articles/thesis/Optimal_design_of_civil_engineering_structures_using_optimality_criteria_methods/9456203
This report presents an Optimality Criteria method for the optimal
design of civil engineering structures subject to multiple behavioural
constraints on element stresses and nodal displacements and also to
constraints on design variables.
The method makes use of a first order approximation for both
deflection and stress constraints instead of the zero order approximation
based on the concept of Fully Stressed Design used for stress constraints
by the majority of Optimality Criteria approaches. The better approximation
for stress constraints, introduced by considering the stress components
as linear combinations of the generalized displacements, removes the
difficulties arising from the use of stress ratios which, particularly
for a well-known 10-bar planar truss, leads in many cases to a wrong
design. [Continues.]
2018-05-22 10:13:50
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Built Environment and Design not elsewhere classified