敷設(shè)主動約束層阻尼圓錐殼的控制特性分析
[Abstract]:Based on the constitutive relation and internal force displacement equation of piezoelectric material, the dynamic control equation and electrical control equation of piezoelectric confined layer are obtained by considering the forward and inverse piezoelectric effects. According to the geometric characteristics of the conical shell, the variable is Fourier expanded along the circumference, and the above equation can be transformed into the form of the first order ordinary differential equation along the generatrix direction. Combined with the normal equilibrium equation of viscoelastic layer and the displacement continuity condition, the dynamic equation of laminated structure is derived from the mechanical equation of active confinement layer and foundation shell, and the equation is combined with the electric equation of piezoelectric confined layer. The electromechanical coupling model of active constrained layer conical shell is established. Then, with the help of precise integration technique and superposition principle, a semi-analytical and semi-numerical method for analyzing this kind of structures is proposed by using the velocity feedback control strategy, and the feedback coefficient is analyzed by the method. The effect of feedback point layout on vibration and control characteristics of tapered shell with active constrained layer damping.
【作者單位】: 廣西科技大學(xué)汽車與交通學(xué)院;
【基金】:國家自然科學(xué)基金(51105083;11162001) 廣西自然科學(xué)基金(2012GXNSFAA053207)
【分類號】:TB301
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