2) Causes of frictional self-excitation vibration
摩擦自激振动成因
3) vibrating cause
振动原因
1.
Analysis on vibrating causes of steam turbine generator;
汽轮发电机振动原因分析
2.
primary discussion on vibrating cause of large scale air cooling generating unit was proceeded the influence of exhaust hood temperature on change of bearing supporting height scale is the important cause of unstalbe vibrating of the unit,the valid way to improve operating stability of the unit is the rasonable stucture design and strict installating overhand quality.
对大同二电厂 2号机和太原二电厂 8号机两台大型空冷机组振动原因进行了初步探讨。
4) vibration factor
振动因子
1.
Against the background of wind-induced vibration of the H-shaped hangers of steel truss arch bridges,this paper analyzes the degree of influences of the Reynolds number Re,vibration factor ξ,stress magnitude,stress state,boundary conditions and sectional shapes of hangers on the vibration of the hangers of the steel truss arch bridges.
以钢桁拱桥的H型吊杆的风致振动为工程背景,分析了吊杆的雷诺数Re、振动因子ξ、应力大小及应力状态、边界条件、断面形状对钢桁拱桥吊杆振动的影响程度。
5) vibrating compaction
振动成型
1.
In order to establish the transforming relation between modified proctor compaction method(MPCM) and vibrating compaction method(VCM),three types of graded crushed aggregate performance were compared between the VCM and MPCM.
为建立振动成型和击实成型的转换关系,进行了3类典型级配碎石在振动和击实成型下的对比试验。
6) vibro-sinking
振动成孔
1.
Teh description is made of the generals of the vibro-sinking high-pressure grouting diaphragmwall completion technology and the equipment, as well as the DJ-60 vibro-sinking high--pressure grouting rig,construction process and application.
介绍了研究成功的振动成孔高压喷射注浆成墙技术的概况、设备配置及DJ－60型振孔高喷机、施工工艺和工程应用情况，并对其技术性、经济性作了简要分析。
补充资料：点振子振动和点电极振子振动
分子式：
CAS号：
性质：又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内，形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积，且与厚度有适宜的匹配关系。在交变电场作用下，沿厚度方向产生振动，其振幅随着至电极中心距离的增加，呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄，有时考虑到压电陶瓷自身强度太低，可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。
CAS号：
性质：又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内，形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积，且与厚度有适宜的匹配关系。在交变电场作用下，沿厚度方向产生振动，其振幅随着至电极中心距离的增加，呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄，有时考虑到压电陶瓷自身强度太低，可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条