| 1. | Subharmonic resonance response
分谐波共振响应 |
| 2. | Nonlinear dynamic model and primary resonance of piezoelectric laminated disk
压电层合圆板的非线性动力学模型与主共振响应 |
| 3. | Parametric resonances of a pipe conveying fluid and their numerical simulations
输流管的参数共振及共振响应的数值模拟与分析 |
| 4. | Our result shows that the rce detector based on this system has very high quantum efficiency and extremely sharp resonant response peak ( 16 mev )
我们的结果显示， 1 . 3 m左右rce探测器具有很高的量子效率和非常窄的共振响应峰( 16mev ) 。 |
| 5. | The main contents of the dissertation are as follows : chapter one summarizes the situation and application of response in nonlinear dynamical system under narrow - band random excitation and presents the main contents and arrangement of the dissertation
第二章和第三章研究了系统( 1 1 )在窄带随机外部激励下的共振响应问题。主要讨论了w _ 2 3w _ 1 ， 3w _ 1时的情况。 |
| 6. | The study shows that adequate modes are important to ensure the precision of computation , and different ways to deal with cross terms of force spectra and modals have a great effect on results , and the resonant responses are sensitive to the structural damping ratio
研究表明，选择足够数量的参振模态对保证计算精度非常重要，力谱交叉项、模态交叉项的不同处理方法对计算结果有较大影响，并且结构共振响应对结构阻尼很敏感。 |
| 7. | Based on mechanical vibration theory , with the torque divider ' s structure unchanged , there exist two kinds of approach to reduce the resonance : one is keeping the bending vibration frequency away from the excitation frequency , the other is increasing the modal damp
根据机械振动理论，在不改变分动器结构设计的条件下，采用两种方法降低螺栓共振响应：一种是将弯曲模态频率移出激励频带；另一种是提高弯曲模态的阻尼比。 |
| 8. | At the other hand , we can perform the rrpa calculation with the continuum replaced by a set of outgoing single particle resonances , it indicates that the resonances in the continuum play an important role in the description of nuclear dynamical processes , such as collective giant resonances . energies , widths and wave functions of the single particle resonant continuum are determined by solving scattering states of the dirac equation with proper asymptotic conditions for the continuous spectrum in the r ' elativistic mean field theory . the relativistic regular and irregular coulomb wave functions are calculated numerically
在进行相对论无规位相近似计算时将连续谱中所有的正能态用单粒子共振态来代替，并且在计算中采用单粒子共振态的真实宽度，利用这种方法我们计算了核的同位旋标量巨八极共振响应函数，并且和考虑了连续谱中所有正能态贡献的结果进行比较，计算结果表明，连续谱中只考虑单粒子共振态对核的集体激发的贡献时，给出的响应函数基本上能够重现考虑了所有正能态贡献时的计算结果，这说明了在核的集体激发中，连续谱中主要是单粒子共振态的贡献。 |
| 9. | Its principle is : a laminated structure ( beam or plate ) with delamination consists of undelaminated region and delaminted region which can be divided to upper and lower parts . when a low - amplitude and high - frequency excitation has the frequency close to some part ' s natural frequency , this part will resonate and certain amount of mechanical energy will convert to heat so that the delaminated region ' s temperature exceeds greatly that of the undelaminated region . therefore the delamination can be located by means of infrared thermograph
其原理是具有脱层的层合材料构件(梁或板)包含脱层区域及未脱层区域，脱层区域分为上下两部分，若对层合材料构件施加小振幅、高频率的振动激励，当激励频率恰好接近其中一部分的固有频率时，该部分就会产生共振响应，部分机械能将转化为热能，使脱层区域的温度远高于未脱层区域，借助红外热像仪即可显示出脱层的位置。 |
| 10. | In practical application , the m10 180 bolts , which are installed in the head cover of the torque divider of ts5560 special automobile , sometimes fracture all of a sudden . according to the tests of acceleration , stress and strain , and the exciting test , it is resonance vibration that leads to the compound - bending fatigue fracture of the bolts . the exciting force caused by drive system , transmitted through the torque divider , produces a 1000 - 1500hz cyclical excitation at the junction of the bolts and head cover , which causes the first order bending resonance vibration of the bolts
通过加速度、应力应变测试实验和激振试验的研究，发现ts5560特种车分动器取力器气缸端盖m10 180螺栓断裂问题是由于共振引起的双向弯曲疲劳断裂：传动系统工作所产生的激励，经过分动器结构的传递(特别是分动器一阶扭转模态的放大) ，在螺栓的连接处产生1000 1500hz的振动激励，其导致螺栓一阶弯曲共振，在螺栓一阶弯曲模态的阻尼比较小的情况下，使得螺栓产生较大的共振响应，导致螺纹处的弯曲动应力较大，疲劳寿命较低。 |
