查询词典 cylindrical shell

In this thesis, an enhanced patch test function for Mindlin plate and thin cylindrical shell elements is proposed.

本文首次提出并建立了Mindlin板和圆柱薄壳有限元增强型分片检验的检验函数。

Reduced order,the governing equation of a cylindrical shell may bechanged into two Helmholtz type equations.

而薄圆柱壳基本控制方程在经算子分解降阶处理后，得到的也是与二维弹性波散射问题相似的Helmholtz型方程。

Construction methods of large-span reticulated cylindrical shell are studied in this paper, based on variety of existing spacial structure construction methods. A new type of construction method that the structure is formed integrally by sliding support is bring forward in literature [1]. Construction process run-after computation is conducted by Ansys program, and a new type of hinged joint is obtained.

本文在概括总结了现有的各种空间结构施工方法的基础上，着重研究了大跨度柱面网壳结构的施工技术，对文献[1]提出的新施工方法——柱面网壳支座水平滑移结构整体成形施工法进行了施工全过程的跟踪模拟和结构内力分析，给出了具体施工实施方法，并提出了一种可单自由度转动的新型铰接节点。

In the analysis, a nonlinear wave vibration equation of the thin cylindrical shell including damping and items due to geometric nonlinearities was established and then transformed by Galerkin's method. With different combinations of modes different nonlinear differential equations in modal coordinates were obtained. The Runge Kutta method was used to solve the equations numerically and some features of nonlinear wave vibration were discussed.

在研究过程中，首先，考虑阻尼并引入几何非线性项，建立薄壁圆柱壳的非线性波动方程，然后，采用Galerkin方法对波动方程进行转换，选取不同的模态组合，得到相应模态坐标下的非线性微分方程，最后用Runge-Kutta法进行数值计算并对圆柱壳的非线性波动振动特性进行了分析。

The effects of curvature radius R of the cylindrical shell with circumferential semielliptical surface cracks on stress intensity factors K_Ⅰ are investigated.

本文探讨了含周向内、外半椭圆表面裂纹圆柱壳体的曲率半径对其应力强度因子K_1的影响。

The similarities of structure and loading conditions of a cylindrical shell with a hole under inside pressure and that of its plate model(a plate with a hole under tension) are analyzed to improve the precision of its fatigue life prediction by modeling.

研究受内压开孔圆柱壳与其受拉伸开孔平板模型在结构和受载条件上的相似性。有限元分析表明，开孔圆柱壳与其相应的平板模型在开孔附近的等效应力分布非常相似。

The experimental modal analyses have been done under static condition and high-speed rotating condition for a given thin cylindrical shell by using shock vibration excitation method.

对一圆柱薄壳在静止状态和高速旋转状态下进行了模态试验。

The equation of the cylindrical shell subjected to underwater explosion shock wave is derived from Hamilton variation principle, considering the fluid-structure interaction .

首先，计及流—固耦合作用的影响，文中由Hamilton变分原理推导出了圆柱壳受爆炸载荷作用的控制方程。

In this thesis, transient problem of three dimensional dynamic interaotion is investigated for thick cylindrical shell in semi-infinite media under shock load. An analytical solution--boundary element coupling method is presented.

本文研究半无限介质中圆柱厚壳受冲击荷载作用，与介质三维动力相互作用的瞬态响应问题，提出一种解析解——边界元耦合方法。

At last, experimental research on stiffened cylindrical shell with internal substructure is done.

针对不同的子结构几何、材料特性参数，本文讨论了子结构的存在对壳体振动和声辐射特性的产生的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。