Optimization Techniques Used in Engineering Applications

FRP composite is now being used in the construction of main structural elements, such as the FRP sandwich panel for flooring system and bridges.

Many researchers haveaccepted that the traditional materials such as wood, steel and concrete lose the battle against corrosion. New construction technologies have been trialled using FRP materials as an alternative to the traditional steel, concrete,and wood materials .In addition, its use has been increasing for the repairing, strengthening and replacement of old structures. Therefore, the evaluation of the fibre composites in civil engineering applications is important to justify whether this material is reliable enough to be used as a construction material. Steel is a homogenous material with constant stiffness in all directions, while the FRP composite material has different stiffness in different directions. The fibre composite member designed for tension cannot be loaded with torsion forces.Therefore, fibre composites are generally anisotropic, brittle, low modulus,and arehighly dependent on the properties of its components matrix and fibre.

The optimization of a composite plate is crucial analysis for layout of systems ranging from aircrafts to civil engineering structures. the design optimization hassle of present day interest is the minimization of the burden function for a sandwich composite plate. this is a design optimization problem which optimizes the thickness of the sandwich layers to give the minimal weight. of extra interest to contemporary have a look at are the works at the layout optimization of composite sandwich plates wherein the thickness of outer layers and the core are taken because the design variables.

These types of fibre composite girders require substantial research and development to satisfy the design requirements, including effects such as environmental impact, long-term durability, load variation, cost, and dynamic consideration.

Optimization methods in fibre composite structural design

This section will review the most popular optimization methods used in the design of fibre composite structures for civil engineering applications. The design optimization of civil engineering structures has specific design requirements or constraints regarding to the serviceability of the structure during itslong life.