| 1. | Experimental study of induced ship hull excitation force prediction by a container ship propeller
集装箱船螺旋桨诱导激振力预报的试验研究 |
| 2. | The shock absorption rule of labyrinth assembly under single - point excitation force is researched
摘要研究在单点激振情况下阻尼套筒对蓖齿封严结构的减振规律。 |
| 3. | When a series of different levels of sine excitation force is imposedon a non - linear testing structure , the response data vary with the force
非线性系统在不同力幅的正弦激励时，其频率响应函数将随力幅而变化。 |
| 4. | At last , the dynamic response characteristic in time domain of the ems on the frequency of the excitation force is given
最后给出了时域内电磁弹簧刚度值对激励力频率的动态响应特性，设计了实现该电磁弹簧的结构框图。 |
| 5. | In the four parameters the frequency of excitation force is most significant to the horizontal and vertical velocity of seedlings . the amplitude of excitation force is less significant
四个因子中，频率对钵苗的推送速度影响最为显著，其次是激振力幅值f 。 |
| 6. | The influence of the spring tolerance to the performance is studied . the tolerance of spring should be controlled under 2 percents . the waveform of current excitation force is rectangle
在虚拟模型中，还就弹簧误差对振动性能的影响进行了分析研究，得出了误差应控制在2以内的结论。 |
| 7. | The optimized combination of parameters is listed as followed : the amplitude of excitation force is 150 newton ; the frequency of excitation force is 38 hertz ; the inclination and stiffness of spring is 64 degree and 56 newton per millimeter
分析得出振动参数的最优组合方案为：激振力f取150n ，激振频率山取38hz ，弹簧倾角及刚度k分别取64 、 56n mm 。 |
| 8. | After comparing three form ( rectangle , saw and sine wave ) of excitation force , the conclusion is drawed that the sine wave is much better than the other two waveforms . finally , multi - seedling virtual prototype is studied
另外，对比分析三种波形(矩形波、正弦波及锯齿波)激振力对振动系统的影响，发现采用正弦波激振力对振动系统冲击较小，应优先考虑使用。 |
| 9. | Substituting the above mod al reactions ( moments ) and excitation forces into the shell ' s modal vibration equations , the shell ' s radial modal velocity are obtained from which the far - field sound pressure derived by stationary phase method can be calculated
将以上各项荷载和激励力代入壳体的模态运动方程，可求得壳体的模态径向速度，然后由稳相法得到远场声压的解析解。 |
| 10. | In this thesis , by means of the lagrange function , the finite element dynamic equations of the beam element are deduced . then all the element dynamic equations are assembled into the system dynamic equation through using the kineto - elastodynamics theory . the dissipation force derived from joint damping is applied as excitation force of the linkage system
本文的主要内容如下：以平面弹性四连杆机构为研究对象，运用ked ( kineto - elastodynamics )方法推导出了连杆机构的系统动力学方程；在此基础上，将运动副阻尼等效为粘性阻尼，导出了包含运动副等效粘性阻尼系数的系统动力学方程。 |
