1) dynamic pore water pressure
振动孔压
1.
Study of dynamic pore water pressure and axial strain in saturated sand-gravel composites;
饱和砂砾料振动孔压与轴向应变发展模式研究
2.
Study on dynamic pore water pressure in silty clay interbedded with fine sand of Nanjing;
南京粉质黏土与粉砂互层土及粉细砂的振动孔压发展规律研究
3) vibration pore water pressure
振动孔隙水压力
1.
By 3-D finite element numerical analysis, dynamic behaviors such as seism-induced permanent deformation, acceleration and vibration pore water pressure of the deep pile foundation are studied.
采用有效应力动力分析方法,通过三维有限元数值分析手段,对某长江大桥索塔超深钢围堰加钻孔灌注桩基础进行了地震反应性状分析,对超深桩基础的震陷、地震反应加速度及振动孔隙水压力等动力特性进行了研究。
2.
Applying principle of effective stress, the numerical analysis is made on the seismic effect, such as the vibration pore water pressure, displacement and stress, for saturated soil under the influence of earthquake with B spline function on the basis of Biot consolidation theory.
采用有效应力原理,以Biot固结理论为基础,用B样条函数构造了考虑地震效应的土体振动孔隙水压力、位移及应力的数值计算方法。
4) vibrating drilling
振动钻孔
1.
Based on the kinetic analysis of axial vibrating drilling process, the cutting force under axial vibrating drilling is studied systematically.
在对轴向振动钻削过程进行运动分析的基础上,对轴向振动钻孔切削力进行了系统研究,给出了瞬时切削力和平均切削力的理论表达式。
5) vibratory drill
振动钻孔
1.
Chip breakage in vibratory drilling is caused by discontinuous cutting process.
指出振动钻孔断屑是由间断切削过程造成,根据振动波形干涉可得出理论断屑条件。
6) vibration drilling
振动钻孔
1.
A new technology is put forward for vibration drilling under changed parameters of three cutting regions for machining micro holes.
提出了三区段变参数振动钻削微孔的新工艺 ;探讨了用非线性回归求取各区段最佳振动参数的方法 ;验证了以三区段最佳振动参数做变参数时 ,用振动钻孔可以全面降低微孔加工误差的优良工艺效
2.
In this paper, the domestic and foreign status of the research on vibration drilling has been reviewed, and most of the theories, research methods and research results have been abstracted and generalized.
评述了振动钻孔的国内外研究状况,归纳了国内外主要专家学者的理论、方法和研究成果,并且展望了振动钻孔研究的前沿问题和应用前景。
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