Structural Topology Optimization Design of Loading Device in Static Testing for Launch Vehicles
Aiming at the situation of multiple components and heavy weight in static testing for launch vehicle structures,lightweight design is carried out,and a refined topology optimization method for loading devices is proposed.Based on the variable density method,a topology optimization model with minimum compliance as the objective function and volume ratio as the constraint condition is constructed.The fine topology of the structure is realized by selecting the density value of the material in sections.According to the optimization results,the main bearing structure and the weight reduction part are determined,and the least square method is used to fit the irregular boundary surface to improve the manufacturability.The final load device bearing 1 500 tons axial pressure lost 19.7%of weight,and the structural stress and deformation are reduced and distributed more evenly.This study has practical value for the high load-bearing components design in structural mechanics experiments of vehicles.
Launch vehicleStatic testingStructural topology optimizationVariable density methodLoading deviceLightweight design
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