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1)  slow changing stiffness
慢变刚度
2)  variable stiffness
变刚度
1.
Elastic stability analysis on variable stiffness drilling string with flexible joint for rotary steering drilling;
旋转导向带挠性接头变刚度钻具组合的弹性稳定性分析
2.
Approach to tuning natural frequency of variable stiffness elastic support of 3D vibration strengthening polishing vibration table;
三维振动强化抛光振动台变刚度弹性支承调谐固频的探讨
3.
Study on the settlement of the variable stiffness piled raft foundations;
变刚度桩筏基础沉降规律研究
3)  variable rigidity
变刚度
1.
Nonlinear interacting analysis of piled-raft foundation and variable rigidity design method for balance settlement
桩筏基础非线性共同作用分析及变刚度调平设计
2.
On basis of variable rigidity principle,by combination of the advantages of rubber and metal vibration isolator,a composite structure isolator with special shape elastic element and damping amplitude limiter is designed.
根据变刚度原理,吸收橡胶隔振器高阻尼和金属弹簧隔振器高承载力的优点,采用新型材料,设计了一种由特形弹性元件以及弹性阻尼限幅装置组合而成的复合结构隔振器。
3.
Recently more and more attentions are given to the variable rigidity design method for controlling differential settlement, The three dimensional(3?D)finite element method is used to discuss the relation between settlement and rigidity of foundation supported by different type piles.
近年来 ,以控制差异沉降为目标的桩基础变刚度调平方法在我国岩土工程界受到越来越多的重视和应用。
4)  stiffness mutation
刚度突变
1.
Based on comparing the results of structure systems, the paper reach the conclusion that the sandwich rubber cushion effectively control displacement response of the additional stories structure, and the displacement of each storey are significantly decreased, especially the stiffness mutation of the directly storey-adding are relieved .
通过对比分析得出:设置隔震支座较好地控制了直接加层结构在地震作用下的位移响应,使各层位移得到有效的控制,尤其使直接加层结构刚度突变现象得到缓解,为直接加层结构的优化设计提供了较大空间。
5)  variable-stiffness
变刚度
1.
Research on supporting load distribution of large-scale rotary kiln with multi-support and variable-stiffness;
大型多支承变刚度回转窑支承载荷分配问题(英文)
2.
Based on analysis of the operating characteristics of the variable-sliffness spring damper,the performance of the variable-stiffness spring damper is studied and the parameters of the spring group and the relation among the parameters of all springs in the spring group are defined.
根据变刚度弹簧减振装置的运用特点,对其性能进行了分析研究,确定了变刚度弹簧组的性能参数及其与弹簧组中各弹簧性能参数之间的关系。
6)  alter-rigidity
变刚度
1.
Study on "equivalent flexbility method" fatigue experiments of alter-rigidity spring combinations of vehicles;
车辆变刚度弹簧组的“当量挠度法”疲劳试验方法研究
2.
Based on general method,fatigue life for the alter-rigidity spring combinations of Type K6 bogie is estimated.
对转K6型变刚度弹簧组的疲劳强度进行了理论分析,利用名义应力法对疲劳寿命进行了估算,利用考虑实际重车载荷下的“当量挠度法”对疲劳强度进行了校核,同时进行疲劳试验对理论分析进行了验证。
3.
Using object-oriented programming language VB as development tool,and based on the design theory of railway vehicle spring,the CAD system of railway freight car alter-rigidity spring asembly is designed and developed.
采用面向对象的编程语言VB为开发工具,以铁道车辆弹簧设计理论为依据,设计开发了铁路货车变刚度弹簧组计算机辅助设计系统,设计系统将车辆弹簧从传统单一的静强度设计提高到静强度和疲劳强度并行设计的层面,对弹簧的疲劳寿命进行估算,并根据不同要求设计开发基于2种方法的疲劳试验方案。
补充资料:变刚度轧制


变刚度轧制
rigidity change rolling

b jangongdu zhazhj变刚度轧制(rigidity ehange:olling)板带轧制中改变轧机承受弹性变形能力的轧制。在板带材轧机上,利用不同的辊缝调节量,抵消因轧制力引起的轧机的局部或全部弹性变形,可以获得理想厚度偏差的板带。轧机固有的自然刚度系数Km是不变的(见轧机刚度系数),它是随轧机固有结构和材质而定的常数。在轧机固有结构基础上由于增设了液压装置,实际发生作用的轧机刚度系数随辊缝调节量的不同而发生变化,因此称它为刚度可变,这时的轧机刚度称为等效刚度或当量刚度,这时的轧制就是变刚度轧制。 轧机刚度可变控制的基本方程为: △尸(l一C)△尸 助’~二=.丫汁一一二二二苍升 Km KE式中抓‘为轧辊位置补偿之后的带钢轧出厚度偏差;C为轧辊位置补偿系数;KE为轧机的等效刚度系数。所谓轧机刚度可变控制,实质上也就是改变轧辊位置补偿系数C,即改变K:。在某一特定结构的轧机条件下,轧机固有的刚度系数K,是一个常数,因此对C可以作如下的分析: (l)当c~l时,则K。一co,以‘二o。这就意味着轧机的弹跳(见轧机弹性方程)量被100%补偿掉了,即不论来料厚度偏差如何,由于此时轧机等效的刚度系数K:是无穷大,完全可以使带钢的实际轧出厚度达到所要求的尺寸,没有厚度偏差。此种情况下轧辊的辊缝称为恒定辊缝,其等效的轧机刚度称为超硬刚度,或超硬特性。为了稳定起见,取C~。.8一0.9,KE“250。以上,在计算机控制时,其设定值取为K:一3300t/mm。 、,.___,~,_△尸__.△尸__、、 (2)当C一O时,则C等一二O,占衬一气乡~叔,这 、“’州~一’“’乃J“犬m一’“”Krn一“’“。~就说明实际轧出厚度还具有因来料厚度差沙H所引起的厚度偏差队。此时,轧机的等效刚度系数KE就等于轧机原来所固有的(或称为自然的)轧机刚度系数K二,轧机的刚度称为自然刚度,或自然特性。一般来说,轧机的自然刚度系数Km~500~600t/mm。 (3)当。
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