| 1. | The research on the dynamic behaviors of the coupling system under different external excitations of horizontal motion has been carried out in the second part
第二部分是关于贮箱类流固耦合系统在平动激励作用下动力学问题的研究。 |
| 2. | The developed system provides a test analysis platform for the study of the effects of the size parameters of the pec and the frequency and the amplitude of the external excitation on the electricity generating capacity of the pec
该测试系统为研究压电陶瓷尺寸参数、外界激励的频率和振幅对压电陶瓷发电能力的影响提供了测试分析平台。 |
| 3. | The feasibility of evaluating the pre - stress with the measured frequencies of a structure under external excitation , and the influence of the mean normal stress on the mechanical properties of a column was also discussed
第七章提出了用固有频率的测试评估预应力效果的思想，论证了其技术可行性。指出了钢管内填物的压力产生的初应力对临界压力的有利影响。 |
| 4. | Traditional static design methods can hardly resolve problem of dynamic design . only through exploring the interrelationship among the structure ' s natural characteristics , the external excitation and dynamic response of system , that is dynamic design , the problem can be resolved
传统的静态设计难以解决动态特性问题，只有通过对结构的固有频率，外界作用和系统的动力响应三者之间的联系进行研究，即动态设计，才能有效的解决这个问题。 |
| 5. | At present , the research on dynamics of solid - fluid interaction is generally based on the assumption that the containers are rigid which cannot meet the truth . meanwhile , there is only little research on the dynamic behaviors of the coupling system under different external excitations
目前,国内外关于贮箱类流固耦合动力学研究一般都建立在充液贮箱为刚性这一假设的基础上,这与实际情况尚有偏颇;同时,对系统在不同外激励作用下的动力学行为的研究还相当少。 |
| 6. | The method of multiple scales is used to determine the equations of modulation of amplitude and phase . the steady state response can be obtained by solving a couple of algebraic equations , which have been achieved by careful deduction under some conditions . and because of the complexity of the equations , programs are necessary to solve the equations mentioned above , and certain graphs are presented . based on chapter two , in chapter three , the method of multiple scales is introduced to the study of the multiple - dimensional nonlinear stochastic systems under random external excitation
在第二章基础上，第三章将多尺度法引入到相应的随机系统的研究中；严格推导了系统的约简方程，用矩方法求出稳态解应满足的方程，获得一些结果；并且数值模拟结果与理论推导的结果是一致的；并注意到，与其对应的确定性系统相比较，系统响应从周期解变为近似周期解，系统的相轨线从极限环变为扩大的近似极限环；随着激励带宽的增大，此扩大的近似极限环的宽度将增大。 |
| 7. | It is analyzed that the values of external excitation , the internal damping of the shaft and the depth of the crack have effects on the amplitude frequency response curves . in chapter 5 , the bifurcation and chao s of a rotor system are studied . the bifurcation parameter sets of the motion equation are determined by using the theoretical method
从理论上确定了在垂直平面内振动的裂纹转子运动方程的分叉参数集，且用数值方法验证了理论分析的正确性，同时，还利用melnikov函数法给出了系统发生混沌运动的临界条件，最后，利用数值方法研究了考虑涡动影响的转子系统的动力特性。 |
