naturalfrequency;torsion;equivalentmodel;finiteelement波纹管动态特性的研究主要集中在波纹管振动固有频率的计算尤其是轴向振动和横向振动的固有频率而关于扭转振动固有频率的研究不多Li[1]做过波纹管轴向和横向振动固有频率的实验却没有关于扭转振动固有频率的实验见诸文献EJMA标准[2]也只提供了波纹管轴向和横向振动固有...
aThis data is normally available from the pump manufacturer and is typically used to calculate a frequency range for the corresponding wet and dry torsional natural frequencies. 这数据通常是可得到从泵浦制造商和典型地使用计算一个频率范围为对应的干湿的扭转力固有频率。 [translate] ...
The proper non-dimensional root flexibility and frequency parameters are derived. The effect on the first three torsional natural frequencies and the corresponding mode shapes is studied for the complete spectrum of root flexibility ranging from a clamped to a free root. An empirical formula is ...
On the basis of the analysis of the twisting vibration of rotary sucher-rod string, a formula of calculating every harmonic vibration eigenfrequency is presented. 在对旋转抽油杆柱的扭转振动分析的基础上 ,给出了各阶扭转振动固有特性参数的计算式 。 The paper introduces the main noise resource of th...
the structure variables such as torsional stiffness of the transmission are analyzed and optimized through the calculation formula of the sensitivity analysis which is deduced by the transfer matrix method.Further more,the simulation proves the accuracy of the optimization.Finally,the problem of abnormal...
The forward-scattered radiation is found to consist of the incident frequency ν0 and Stokes and anti-Stokes frequencies of the general formula ν0± nν1, where ν1 is usually associated with just one Raman-active vibration of the scattering molecules and n = 1, 2, 3,…. For example, ...
2.On the basis of the analysis of the twisting vibration of rotary sucher-rod string, a formula of calculating every harmonic vibration eigenfrequency is presented.在对旋转抽油杆柱的扭转振动分析的基础上 ,给出了各阶扭转振动固有特性参数的计算式 。 3.The paper introduces the main noise resource ...
The bridge deck torsion increases the derailment risk, especially for bridges with a low natural frequency. The reason lies in that the lateral and torsional deck motions are highly correlated for bridges with lower frequency. Based on this observation, a code-type formula was proposed to evaluate...
1. The radius of the ball/socket is 13 mm and the contact area is 26π (~ 81.7) mm2 according to the calculation formula of spherical surface area. Download: Download full-size image Fig. 1. The schematic and actual pictures of the ball-on-socket contact configuration. The UHMWPE ball ...
A pump system may include a pump, a driveshaft, driving equipment, and a vibration dampening assembly configured to reduce pump-imposed high frequency/low amplitude and low frequency/high amplitude torsional vibrations. The pump may have an input shaft connected to the driveshaft. The driving equi...