Topology optimization design of aircraft flap based on variable density method
For the thin-walled structure of the aircraft flap,the topology optimization problem was solved using the DUAL to accomplish the lightweight design goal of the flap.Fluent was used to analyze the dynamics of the flap structure and obtain the aerodynamic load when the flap was rotated downward at the maximum deflection angle,and then the surface load was extracted by Tecplot and loaded into the Optistruct of Hypermesh to optimize the flap topology by variable density method.The minimum flexibility was used as the objective function,and the density of the material in the design domain was the design variable.According to the finite element analysis method,the material in the design domain was discretized,and the DUAL was used to construct the approximation function,which realized the lightweight design of the flap under various constraints such as stress constraint,displacement constraint and manufacturability constraint by only calculating the value of the function and its derivative,which greatly reduces the computational time and improves computational efficiency.
topological optimizationvariable density methoddualreal loadflap
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