1) stiffness evaluation of spring element
弹簧界面元刚度
2) variable stiffness spring element
变刚度弹簧单元
3) spring rate
弹簧刚度
1.
With the engineering example of a V-shaped leg rigid frame arch bridge in the downtown of Luogang in Guangzhou, the force analysis of the bridge is introduced, focusing on calculation of the pile foundation spring rate and the key points for construction.
以广州市萝岗中心区的V形斜腿刚架拱桥为工程实例,介绍了对该桥进行的受力分析,并重点介绍了桩基础弹簧刚度的计算方法及施工要点。
2.
Based on test conditions with consideration of the nonlinear contact between spring leaves,an accurate finite element model for the fewer-piece leaf spring at both assembling and loading states is built,and the stress distribution and the spring rate of leaf spring,which are close to the real conditions,are obtained through finite element analysis with stress superposition.
以试验工况为基础,考虑簧片间的非线性接触,建立了钢板弹簧装配及加载状态的精确有限元模型,通过有限元分析和应力叠加计算得到钢板弹簧接近实际工况的应力分布和弹簧刚度。
4) spring rigidity
弹簧刚度
1.
This paper introduces the design principle and features of an automatic measuring and sorting system for spring rigidity based on 8031 single-chip microcomputer.
介绍一个由8031单片机等组成的弹簧刚度自动测试及分选系统的设计原理与特点。
5) spring stiffness
弹簧刚度
1.
In this paper, step displacement, spring stiffness and time step are discussed through an (example).
通过实例分析,作者较深入地探讨了步位移、弹簧刚度及时间步的选取,认为对计算结果影响最大的是步位移,并进一步认为当步位移取值范围为0。
2.
Based on the model,an adjusting method for spring stiffness and the damping of shock absorber is put forward,which is then validated through the simulation tests on a SUV.
为了改善汽车的抗侧翻性能,建立了考虑悬架和轮胎侧向变形影响的一种改进的汽车侧翻模型,并基于该模型,提出了一种关于弹簧刚度和减振器阻尼的调整策略。
3.
Experimental tests on friction and wear behavior of copper-impregnated metalized carbon sliding against stainless steel were carried out under the conditions of different spring stiffness,current intensity and sliding velocity on a pin-on-disc tester with electric current,and the friction coefficients,wear rates,and discharge intensity were tested.
在销-盘摩擦磨损试验机上,测试了弹簧刚度、电流、滑动速度对浸金属碳/不锈钢对磨时的摩擦因数、磨损率及放电强弱的影响。
6) stiffness of spring
弹簧刚度
1.
Then the analysis and experimental study are made about three possible factors to affect the hysteresis of the actuator sys- tem, such as the magnetoconductivity of yoke、the stiffness of spring and the change rate of magnetic density, the ways in effect which minishe.
进而对致动器系统 3 个可能的滞回特性影响因素:轭铁磁导率、弹簧刚度、磁场强度变化率进行分析与实验研究,探寻使致动器滞回特性减小的有效途径。
2.
The influence of dynamic stability of stiffness of spring,damping,size of rod,temperature and exciting frequency etc are studied.
基于结构弹性稳定理论原理,导出了高温环境下钢柱在轴向荷载作用时具有弹性支座的稳定长度计算式,分析了弹簧刚度、耐火保护层、温度等参数对钢柱稳定长度的影响,进一步提出了在实际工程中应采取的有关措施。
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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