torsion couple वाक्य
उदाहरण वाक्य
मोबाइल
- This model is used to describe the bending / torsion coupled vibrations of a rotor and an elastic stator due to the contact
- The lateral - torsion coupling seismic response of the uniaxial - eccentricity base - isolated structure is then analyzed , and the seismic responses of several base - isolated structures with various eccentricity ratios are discussed
- But the translation - and - torsion coupling vibration of structure is a three - dimensional problem , and the experimentation is limited to the size and quantity , so the computer simulation becomes the main means to study the torsion effect
- But the translation - and - torsion coupling vibration of structure is a three - dimensional problem , and the experimentation is limited to the size and quantity , so the computer simulation becomes the main method to study the torsion effect
- Furthermore , this paper develops a practically seismic design method of the middle - rise or low - rise symmetric structures with unsymmetrically viscous dampers on the basis of the theoretical analysis and provides corresponding formulas to obtain the translation - torsion coupling seismic response
- Overcoming the inability of forcing decoupling method ( fd ) , this paper presents a new method - to - step - additional - stiffness method ( tsas ) to calculate the translation - torsion coupling seismic response of tile symmetric structures with asymmetrically viscous dampers
- In the end , the paper sums up the calculation results , and reviews the whole performance of this type of structures under earthquake actions . except that , it reviews the structures " security about the translation - and - torsion coupling response under the fortification and rare seismic actions , and gives a primary evaluation ; it also discusses some characters of the structures " three - dimensional nonlinear response of torsion under earthquakes
- In this paper , three - tower building with name of oriental tunes square in xiamen is analyzed by the international current program sap2000 , considering seismic action in two directions . by structural modeling and calculation , the characteristic of vibration of the multi - tower structure is analyzed , the influences of the rigid ratio of the enlarged base to top tower and translation - torsion coupled effects among several towers are investigated , the inter - story displacement , displacement of the top tower and deformation of tower ' s base floor in x and y major orientation under earthquake action are contrasted with those under wind load . at last , the distributing characteristics of stress of transfer plate and of the normal , shearing stress of mostly vertical elements under earthquake action are studied
- The ratio of story shear rigidity as well as the equivalent lateral rigidity ratio of story above the transfer story to the story under the transfer story should be designed properly to avoid the transfer story becoming weak story , thus the shear walls and the columns in the large base will not yield before the elements above the transfer story ; ( 2 ) the translation - torsion coupled effects and the vibration in the plane should be considered in analysis of structure with large base and muti - towers
- From above analysis , the thesis gets conclusions as following : ( 1 ) the frequencies of multi - tower building are so dense and the coupling in each mode is so evident that the cqc method instead of srss should be used to calculate the seismic action effect ; ( 2 ) torsion effects is distinct between the modes of asymmetry multi - tower structure and it is necessary to take translation - torsion coupling into account ; ( 3 ) the effect of the enlarged base rigid on the seismic properties is very big , the rigid ratio of the enlarged base to towers in asymmetry multi - tower structure should be designed in a proper range ; ( 4 ) the distribution of plane rigid is asymmetry because of the asymmetry layout of towers . the torsion effects of structure not only result in large torsion internal force in vertical element resisting lateral displacement , but also make large influences on the stress of transfer plate and near floors , thus it is necessary to strengthen those floors
- In this thesis , the dynamic models of a specific precise instrument in spacecraft are established and an active vibration isolation system based on piezoelectric intelligent structures is constructed . theoretical analysis and numerical simulation on this system has been carried out . piezoelectric intelligent structure is applied to civil engineering . the piezoelectric intelligent control devise is used for the control of translation - torsion coupling responses of multi - story frame structure suffered from earthquake
- The major work is as follows : 1 ) based on dry hull modal analysis of flexure - torsion coupling vibration of unsymmetrical ship structures about longitudinal centerline , a transfer matrix method to calculate the dynamic characteristics is adopted after the parameters of structures are specified . taken both shear effect and warping deformations into account , the point and field transfer matrices are derived , and the influence on dynamic characteristics is computed according to different damaged positions and areas
- In order to investigate the seismic torsional response of base - isolated structures with frame - shear walls , the lateral - torsion coupling vibration model and the corresponding motion equation are formulated for the high - storey structure with frame - shear wall and isolated foundation under seismic action
- ( 5 ) the piezoelectric intelligent control devise is used for the control of translation - torsion coupling responses of multi - story frame structure which is suffered from earthquake . the results of an example illustrate that this intelligent control devise can effeiciently reduce the structual translation - torsion coupling responses induced by earthquake
- Finally , as compared the translation - torsion coupling seismic response of asymmetric high - rise building subjected to bi - directional with unidirectional earthquake motions , the results illustrate that the aseismic capacity of structure in the case of bi - directional earthquake is worse , which accords with the conclusion that code for seismic design of building emphasizes
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