【摘 要】
:
A composite stiffened panels configuration design method is proposed integrating various mechanical simplified models, dealing with global and local buckle separately based on two-level optimization f
【出 处】
:
2012 Postdoctoral Symposium of China on Materials Science &
论文部分内容阅读
A composite stiffened panels configuration design method is proposed integrating various mechanical simplified models, dealing with global and local buckle separately based on two-level optimization framework.An equivalent stiffness model is constructed for airframes unidirectional stiffened panel with complex sections, optimizing stiffness match relationships from global perspective in system level.Critical buckling load of skin is fitted by nonlinear rational interpolating function surrogate model, which handles local buckling in subsystem level, optimizing the layout and detail dimensions according to the stiffness requirements from system level.An integrated framework is built based on collaborative optimization theories to coordinate and unify each levels critical load to improve material utilizing, and the panels integrated design could be implemented.Finally, the layout optimization of a panel with Z stringers is processed.Calculation result satisfies the design requirements, and every optimization level shows a high precision, which validates the reliability of this method.
其他文献
In order to enhance the surface properties of P 110 oil casing tube steel and increase its life-time during operation, chromizing coating was fabricated by pack cementation.Scanning electron microscop
Bronze-impregnated carbon-matrix composites were prepared through compression molding, carbonization and impregnation.The mechanism of sulfuration was studied and the effect of coal tar pitch modified
The change process of MnS inclusions in heavy rail casting slab was in-situ observed by confocal laser scanning microscope.The result shows the MnS has shape evolution owing to the influence of the di
The effect of activator and its dosage on the early hydration and setting performances of alkali-activated slag cement (AASC) is very important.The effects of activator type, modulus of water glass (M
The Hoek-Brown (HB) strength criterion has been widely applied to the estimation of strength of intact rock and rock mass, whose yield function includes general form (a ≠ 0.5)and special form(a=0.5).I
This paper presented quantitatively the results of an experimental investigation on the influence of either mineral admixtures, fly ash or GGBS and superplasticizers on micro hardness of aggregate to
The magnetic hysteresis loop is a significant performance of ferromagnetic material.The different-size specimens were fabricated and studied on the basis of magnetomechanical coupling tests.The curve
The effect of annealing temperature in the range of 1020℃-1120℃on the microstructure, mechanical properties and corrosion resistance of low-Nickel duplex stainless steel was investigated.The results s
The microstructures of Mg-2Nd-4Zn-lZr alloy in the as-cast and after heat treatment were investigated.Several kinds of secondary phases were found and characterized by transmission electron microscopy
Right evaluation of the bond behavior between corroded reinforcing bar and concrete wrapped with fiber reinforced polymers (FRPs) is a chief problem to confirm the effect of FRP confinement.the pullou