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1)  Finite length cylindrical shell
有限长圆柱壳体
2)  finite cylindrical shell
有限长圆柱壳
3)  finite cylinder
有限长圆柱体
1.
The backscattering and forward sca-ttering functions of finite cylinders with hemispheroidal end caps,which have different ratio of length to width or different geometric end caps,were calculated.
以两端有半椭球顶的有限长圆柱体为例,分别计算了具有不同长宽比或者是不同端部几何形状的有限长圆柱体的反向散射和前向散射函数。
4)  finite stiffened double cylindrical shell
有限长加筋双层圆柱壳
1.
The effects of six driving forces on vibration and sound radiation from a finite stiffened double cylindrical shell covered with layers are studied.
研究了不同激励力对流场中敷设阻尼材料的有限长加筋双层圆柱壳的振动和声辐射性能的影响。
2.
The vibration and sound radiation from a finite stiffened double cylindrical shell driven by a point force on the shell surface in the radial direction are studied in this paper.
研究流场中有限长加筋双层圆柱壳受径向点激励的振动和声辐射性能。
3.
Sound radiation analysis of low order modes from a submerged finite stiffened double cylindrical shell coated with viscoelastic layer is systematically studied in this paper.
本文研究的是流场中敷设阻尼材料的有限长加筋双层圆柱壳的低阶模态声辐射性能,壳体的振动用Fli gge壳体方程来描述,通过将加筋结构等效为反力和反力矩加在圆柱光壳表面上,采用Helmholtz波动方程和壳体表面的边界条件推导出声-流场-结构的耦合振动方程,然后采用相应的求解方法进行求解。
5)  finite stiffened double cylindrical shells
有限长加筋双层圆柱壳
1.
Analysis of low order modes was done to reduce noise associated with finite stiffened double cylindrical shells.
分析了壳体的固有模态、激励力和声辐射三者之间的关系,这为用主动控制方法降低有限长加筋双层圆柱壳的振动噪声,提供了理论依据。
6)  ring-stiffened cylindrical shell with finite length
有限长环肋圆柱壳
1.
Analysis of acoustic radiation of a ring-stiffened cylindrical shell with finite length in underwater based on Riccati transfer matrix method
基于Riccati传递矩阵法分析水下有限长环肋圆柱壳的声辐射性能
补充资料:横向磁场中的空心超导圆柱体(hollowsuperconductingcylinderinatransversalmagneticfield)
横向磁场中的空心超导圆柱体(hollowsuperconductingcylinderinatransversalmagneticfield)

垂直于柱轴(横向)磁场H0中的空心超导长圆柱体就其磁性质讲是单连通超导体。徐龙道和Zharkov由GL理论给出中空部分的磁场强度H1和样品单位长度磁矩M的完整解式,而在`\zeta_1\gt\gt1`和$\Delta\gt\gt1$条件下为:

$H_1=\frac{4H_0}{\zeta_1}sqrt{\frac{\zeta_2}{\zeta_1}}e^{-Delta}$

$M=-\frac{H_0}{2}r_2^2(1-\frac{2}{\zeta_2})$

这里r1和r2分别为空心柱体的内、外半径,d=r2-r1为柱壁厚度,ζ=r/δ(r1≤r≤r2),Δ=d/δ,δ=δ0/ψ,δ0为大样品弱磁场穿透深度,ψ是有序参量。显然此时H1→0,M→-H0r22/2,样品可用作磁屏蔽体。当$\zeta_1\gt\gt1$,$\Delta\lt\lt1$时,则

H1=H0/(1 ζ1Δ/2),
M=-H0r23[1-(1 ζ1Δ/2)-1]。

若$\zeta_1\Delta\gt\gt1$,则$H_1\lt\ltH_0$或H1≈0。所以,虽然$d\lt\lt\delta$,但磁场几乎为薄壁所屏蔽而难于透入空心,称ζ1Δ/2为横向磁场中空心长圆柱体的屏蔽因子。当$\zeta_1\Delta\lt\lt1$时,则H1≈H0,磁场穿透薄壁而均进入空腔,失去屏蔽作用,此时M≈0。类似于实心小样品,由GL理论可求出薄壁样品的临界磁场HK1,HK,HK2和临界尺寸等。

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