研究结构局部刚度改变时的结构重分析方法。
This paper studied the reanalyzes method of the structure when stiffness changed in local area.
结果表明：波箔局部刚度并不相等，而是从固定端到自由端逐渐减小；
Results show that the values of local structural stiffness of bump foils decrease from the fix-end to the free-end, rather than being uniform;
通过改变机体表面局部刚度，对减小机体表面振动响应的几种方法进行了探讨。
Several methods to reduce block surface vibration response by changing the local stiffness of the block are discussed.
计算还揭示了局部刚度损伤对结构局部阻尼特性、振动能量分布和阻尼耗能行为的影响。
Moreover, the effect of local stiffness damages upon the local damping properties, vibration energy distribution, and the behaviors of damp dissipation of structures are investigated separately.
本文对修改结构局部刚度和质量参数，从而使其具有给定固有频率的动力修改问题提出了一种求解方法。
In this paper, a method for shifting the natural frequency of a structure to a desired value by modifying the local stiffness and mass parameters is proposed.
结构内部预紧力的大小和分布与结构的整体刚度、结合部位的局部刚度、过盈配合程度、接触面积等因素有关。
The level and distribution of the pre stresses are influenced by the general and local stiffness of the structure, the contact area and the press degree.
结构内部的预紧力的大小和分布与结构的整体刚度、结合部位的局部刚度、过盈配合间隙、接触面积等因素有关。
The distribution of pre-stress in the multi-layer structure is related to the global and local rigidity, the contact area and the clearance of superimposition.
结构局部刚度改变问题在结构有限元计算时常会遇到，例如：结构物个别构件的破坏或损伤，构件的局部屈服等等。
The problem often arrived when finite element analyses for the structure with a few components damaged or some elements yield, etc.
为使第二阶模态频率避开发动机一阶惯性力频率，文中对扶手架的质量、刚度进行局部修改，结果使手把振动有较大幅度的下降。
To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.
分别研究了钢筋混凝土桥梁在整体腐蚀和局部腐蚀同裂缝扩展的组合效应下截面刚度与服役时间关系。
The paper studies the relation between the section rigidity and the service time of the RC bridge under the composite effect of the expansion of cracks and the whole or local corrosion.
研究了坞墩的刚度和强度、船舶坐墩的总纵强度及局部强度、船舶倾侧等对进坞坐墩的影响。
The rigidity and the strength of block, as well as the longitudinal and local strength of docking ship and the effect of the ship heeling on blocks also studied.
基于梯度塑性理论，研究了应变软化阶段的刚度劣化对剪切带内部的局部应变及相对剪切位移的影响。
Distributed shear strain and displacement in localized shear band were investigated considering degraded stiffness in the strain-softening process based on gradient-dependent plasticity.
局部单层浅网壳的设计关键在于在满足网壳刚度与整体稳定的条件下，确定经济合理的单层部分的可能布置区域和面积。
The design key of partial single-layer shallow reticulated shell is to ascertain the economical and feasible single-layer area with enough structure rigidity and global stability.
当箱型臂截面设计合理且在危险截面处实施局部补强后，可使臂架具有良好的刚度，强度，振动稳定性。
When the box section design boom and a reasonable cross-section are put in danger of partial reinforcement, the arm can have good stiffness, strength, vibration stability.
针对分析得到的局部不合理结构进行了零件结构和布局的优化设计，使整车刚度更趋合理。
According to the local unreasonable structure, optimize the design of part structure and layout, and make the rigidity of complete vehicle more reasonable.
并建立了相应的薄壁单元刚度方程，从而得出了局部坐标系下单元刚度矩阵的显式。
And the corresponding thin-walled element stiffness equation was formulated. The apparent formulation of element stiffness matrix under the local coordination was attained.
约束有应力、变位、杆件局部稳定、刚度及结构系统稳定。
The stress, displacement, member size, local buckling and system buckling constraints of the structure are taken into account.
过渡梁元切线刚度矩阵的提出，使局部单层局部双层网壳的计算结果更趋近于实际。
The application of geometrically nonlinear transition beam element can enhance the calculation precision of partial single-layer and partial double-layer reticulated shells.
文中首先给出了杂交模式的裂纹尖端奇异单元的刚度矩阵，然后基于随机场的局部平均理论和一阶泰勒展开得到了应力强度因子均值和方差的计算公式。
The stiffness matrix of a hybrid crack-tip singular element is first derived, then by use of first-order Taylor expansion the mean and variance of stress intensity factors are formulated.
当单元局部损伤后，由于损伤高斯点的承载能力全部丧失，需将高斯点对单元刚度矩阵的贡献从单元刚度矩阵中除去，此高斯点上的残余应力通过单元节点作为荷载加在结构上。
The contribution of Gauss node to element stiffness should be removed. So the residual stress of Gauss node can be brought to the structure as the load by element node.
当单元局部损伤后，由于损伤高斯点的承载能力全部丧失，需将高斯点对单元刚度矩阵的贡献从单元刚度矩阵中除去，此高斯点上的残余应力通过单元节点作为荷载加在结构上。
The contribution of Gauss node to element stiffness should be removed. So the residual stress of Gauss node can be brought to the structure as the load by element node.
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