SIMULTANEOUS DESIGN OF STRUCTURAL LAYOUT AND DISCRETE FIBER ORIENTATION USING BI-VALUE CODING PARAMETERIZATION AND VOLUME CONSTRAINT
The bi-value coding parameterization (BCP) scheme developed recently by the authors is extended to topology optimization of laminated composites related to the compliance minimization and maximization of natural frequency.The layout design is transformed into a discrete material selection problem that is then solved as a continuous topology optimization problem with multiphase materials.Compared to the existing work, a new form of the volume constraint is introduced in accordance with the BCP to control the material usage and material removal in the corresponding problem formulation.The BCP scheme assigning integer values of +1 and/or -1 to design variables for the unique “coding and identification of each material phase is efficiently used to interpolate discrete fiber orientations, inhomogeneous material phases in terms of continuous variables and to identify the presence and removal of materials.Meanwhile, a general set-up strategy is proposed by assigning “uniform weight values in BCP to ensure the feasibility of the initial starting point.Numerical tests illustrate that the BCP is efficient in dealing with both kinds of design problems including the volume constraint.
Laminated composite discrete optimal orientation structural optimization BCP
Tong GAO Weihong ZHANG Pierre DUYSINX
ESAC,Northwestern Polytechnical University,710072 Xi’an,China LTAS-Ingénierie des Véhicules Terrestr ESAC,Northwestern Polytechnical University,710072 Xi’an,China LTAS-Ingénierie des Véhicules Terrestres,Université de Liège,4000 Liège,Belgium
国际会议
黄山
英文
1-6
2012-06-18（万方平台首次上网日期，不代表论文的发表时间）