Design of dimensionally stable composites using efficient global optimization method

Abstract

Dimensionally stable material design is an important issue for space structures such as space laser communication systems, telescopes, and satellites. Suitably designed composite materials for this purpose can meet the functional and structural requirements. In this paper, it is aimed to design the dimensionally stable laminated composites by using efficient global optimization method. For this purpose, the composite plate optimization problems have been solved for high stiffness and low coefficients of thermal and moisture expansion. Some of the results based on efficient global optimization solution have been verified by genetic algorithm, simulated annealing, and generalized pattern search solutions from the previous studies. The proposed optimization algorithm is also validated experimentally. After completing the design and optimization process, failure analysis of the optimized composites has been performed based on Tsai-Hill, Tsai-Wu, Hoffman, and Hashin-Rotem criteria.

Topology and fibre orientation simultaneous optimisation: A design methodology for fibre-reinforced composite components

“…The proposed algorithms are implemented in the commercial software ANSYS Mechanical. In particular, an Ansys APDL code has been written to execute the optimisation processes, following the flow charts shown in Figures 3 and 4. It can be fully run as an ANSYS routine without the need for external software, proving its versatility and ease of use.…”

“…The topology optimisation problem, reported in equation (4), consists in finding the distribution of g x ð Þ that maximises the stiffness for a volume W. W is a portion of the initial volume and the second equation in equation (4) represents the volume optimisation constraint According to Chiandussi, 30 the optimisation problem shown in equation 4can be solved by using the Lagrange multipliers method. In particular, the Lagrangian function, L g; k; t ð Þ, has to be defined and all its derivates must be equal to zero (equation 5).…”

“…The classical lamination theory (CLT) parameters, such as layer thickness, layer fibre orientation, number of layers, significantly affect the mechanical properties of the FRC. 4 Therefore, depending on the specific application, the optimisation of these parameters is fundamental to maximize the performance of the FRC composite. 5,6 Recently, together with traditional design and manufacturing processes, innovative additive manufacturing (AM) processes have been developed for the production of FRC components.…”

Development of dimensionally stable structures of multilayer pipelines and cylindrical pressure vessels from carbon fiber reinforced plastic

“…In [10], rod systems from FRC are considered. In [11], methods of optimization and design of dimensionally stable structures based on composite plates are presented. Matrix and binder selection questions are discussed in [6,10] (carbon fiber reinforced plastic), [12] (metal composite) and [13] (combined metal and FRC).…”

Stable Characteristics Optimization of Anti-Symmetric Cylindrical Shell with Laminated Carbon Fiber Composite

“…Reddy [ 27 ] adopted the newly developed Enhanced Bat Algorithm (EBA) to perform the minimum weight optimization of laminated composites, and used an unconventional stacking sequence to increase the damage tolerance of the laminate. Aydin [ 28 ] used an effective global optimization method to design dimensionally stable laminated composite materials to obtain high stiffness and low thermal expansion coefficient and moisture expansion coefficient. The proposed optimization algorithm has also been experimentally verified.…”