An extended stress-based method for orientation angle optimization of laminated composite structures |
| |
Authors: | Jin Zhang Wei-Hong Zhang Ji-Hong Zhu |
| |
Institution: | (1) Department of Aeronautics and Astronautics, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan; |
| |
Abstract: | Orientation optimization plays an important role in the lay-up design of composite structures. Earlier orientation optimization
methods face the main problem of huge number of design variables. Recently, a patch concept is proposed to reduce the number
of design variables. However, the traditional stress-based method can not deal with patch orientation optimization of composite
structures. In this paper, we propose an extended stress-based method to deal with such problems. The considered problems
are to minimize the mean compliance under multiple load cases or to maximize the eigenvalues of a composite structure. Four
numerical examples are solved to demonstrate the efficiency of the new method. It is shown that the new method has the ability
to deal with constraints on orientation angle, such as symmetric, antisymmetric and discrete orientation angle constraints.
The iteration is less time-consuming because no sensitivity analysis is needed and a quick convergence rate can be achieved. |
| |
Keywords: | Structural optimization · Composites · Laminates · Orientation angle optimization |
本文献已被 CNKI 维普 SpringerLink 等数据库收录! |
|