Design optimization is an engineering designmethodology using a mathematical formulation of a design problem to support selection of the optimal design among many alternatives. Design optimization involves the following stages:
Variables: Describe the design alternatives
Objective: Elected functional combination of variables
Constraints: Combination of Variables expressed as equalities or inequalities that must be satisfied for any acceptable design alternative
Feasibility: Values for set of variables that satisfies all constraints and minimizes/maximizes Objective.
is a set constraint that includes additional restrictions on besides those implied by the equality and inequality constraints.
The problem formulation stated above is a convention called the negative null form, since all constraint function are expressed as equalities and negative inequalities with zero on the right-hand side. This convention is used so that numerical algorithms developed to solve design optimization problems can assume a standard expression of the mathematical problem. We can introduce the vector-valued functions to rewrite the above statement in the compact expression We call the set or system ofconstraints and the set constraint.
Application
Design optimization applies the methods of mathematical optimization to design problem formulations and it is sometimes used interchangeably with the term engineering optimization. When the objective function f is a vector rather than a scalar, the problem becomes a multi-objective optimization one. If the design optimization problem has more than one mathematical solutions the methods of global optimization are used to identified the global optimum. Optimization Checklist
A detailed and rigorous description of the stages and practical applications with examples can be found in the book . Practical design optimization problems are typically solved numerically and many :Category:Mathematical optimization software|optimization software exist in academic and commercial forms. There are several domain-specific applications of design optimization posing their own specific challenges in formulating and solving the resulting problems; these include, shape optimization, wing-shape optimization, topology optimization, architectural design optimization, power optimization. Several books, articles and journal publications are listed below for reference.
"Generating optimal topologies in structural design using a homogenization method". Computer Methods in Applied Mechanics and Engineering. 71 : 197–224. 1988-11-01. doi:10.1016/0045-782590086-2. ISSN 0045-7825.
Bendsøe, Martin P. Optimization of structural topology, shape, and material. Berlin; New York: Springer..
Behrooz., Hassani,. Homogenization and Structural Topology Optimization : Theory, Practice and Software. Hinton, E.. London: Springer London.. OCLC 853262659.
