| 1. | 3 inherent vibration frequency and relative vibration shape of the bump auto working under various condition can be received from mode analysis
3 、模态分析得到该泵车不同工况下的固有频率和相应的振型。 |
| 2. | In addition , the results from vibration shapes - separation - spectra method and time - history method were compared , and the compared result is valuable for aseismatic design
论文最后对所有研究工作进行了总结，得出了有参考价值的结论，并指出进一步研究中亟待解决的问题。 |
| 3. | With the natural frequency and vibration shape under the condition of non - revolving , the measuring method of the object rotational rate and the formula were obtained
利用已知物体在非旋转状态下的固有频率和振形,求得以等角速度旋转物体的转速量测的方法,并得出计算公式。 |
| 4. | The vibration shapes - separation - spectra - method and time - history method are used to analyze the dynamic response of the cable - bar structure under common earthquake . and the effects of the rise - to - span ratio and the mass distribution are studied
本文分别采用反应谱法和时间历程法对环状索杆结构的地震响应作了较详细的分析，研究了矢跨比、质量分布对环状索杆结构地震响应的影响。 |
| 5. | Based on vibration theories and the analysis of the model , using main vibration shape and the natural frequency , defined the concept of parameter sensitivity , and got its formula . based on this foundation , defined the concept of the appraisement coefficient of adjustment automobile rigidity parameter , and give the calculation equation
根据振动理论，在模态分析的基础上，通过利用主振型向量的正交性，导出参数灵敏度的概念，推导了参数灵敏度的公式。在此基础上，提出了调整汽车刚度参数的评价系数，并给出了评价系数的计算公式。 |
| 6. | Based on wind tunnel test and theoretical analysis , the vibration mechanism , vibration shape , dynamic response and equivalent wind load factor of the long - span grid roof of taizhou stadium subjected to wind excitation are analyzed systematically in this dissertation , and some valuable results are obtained . in the matter of wind tunnel tests , the distribution rules of roof under various wind directions are obtained through the data got from the wind tunnel tests for rigid model of long - span grid roof of taizhou stadium
在风洞试验方面，通过对台州体育中心屋盖刚性模型在模拟大气边界层风洞中进行的不同风向角下的风洞试验所得数据的研究，获得了结构在各种情况下的屋面风压分布规律，并且绘制了台州体育中心屋盖在各个风向角下的屋盖平均风压系数和脉动风压系数分布等值线图。 |
| 7. | The use of the batten interpolation for modal parameter in the curvature modal and flexibility difference curvature method can solve the contradiction between decreasing measure points and the guarantee of identification precision ; the identification program has also been developed in matlab : as long as the former 3 step vibration shape and frequency are input , the value and the graphic representation of damage identification will be obtained by flexibility difference curvature method
本文应用曲率模态法、柔度差值曲率法当中，对模态参数用样条插值，较好地解决了减少测点与保证识别精度的矛盾；在matlab软件中开发了识别程序：只需输入前三阶振型和频率，即可由柔度差值曲率法给出损伤识别的图示与数值结果。 |
| 8. | Dynamic characteristic of orthogonal vierendeel dome was discussed , and the influence on vibration characteristic acted by difference including rise - to - span ratio , shell thickness , section area and constraint condition was studied . vibration shapes - separation - spectra - method and time - history method were adopted to analyze the dynamic response of orthogonal vierendeel dome under common earthquake . by comparing dynamic response in different direction and dimension seismic excitation , the value and distribution of dynamic internal force were obtained
本文研究了正交空腹网壳结构的动力特性，分析了矢跨比、网壳厚度、腹杆截面和支座约束条件对结构自振特性的影响；采用反应谱法和时间历程法对正交空腹网壳的地震响应作了详细的分析，分别研究了结构在不同方向地震激励下和在不同维数地震激励下动力响应的数值大小和分布规律，并比较了两种方法的结果差异，对抗震设计具有参考价值。 |
| 9. | The main achievement of the paper is to recommend the 90 point as the best place for sensor by the contrast of numerical calculation results and test signals . on the point the high frequency disturbing signal was weakened very much when the load impulse was changed , which could be explained when vibration shape was considered
本文最重要的工作是通过数值计算与实验的对比确定点击脉冲荷载作用下传感器的最佳接收位置，即距离加载点相对于管桩截面中心夹角为90的点。 |
| 10. | The paper analyses the characteristic of the self - vibration , the influence on the whole structure stiffness and the vibration shapes from the variation of the floor - slab section , the variation of the primary structure section , the variation of the secondary structure section , the variation of the shear wall section , explaining the method of the sub - structure ( which is the super - element method ) , which is effective
本文通过多种计算模式对双塔结构的自振特性做了研究，分析了主、次框架截面、楼板截面和剪力墙截面变化后对结构整体刚度的影响，同时说明了子结构(即超单元)方法对求解此类结构的有效性。 |
