Random good picture Not show

1. The results show that longitudinal vibration of drill string is relative to rotary speed and weight on bit( WOB ).

2. The structure acoustic radiation caused by longitudinal vibration of shafting is reduced by changing excitation force propagation path and adopting vibration isolator or dynamic vibration absorber.

3. Longitudinal vibration of an integral pile in an uniform soil with end bearing boundary or elastic bottom boundary undergoing vertical harmonic load is theoretically investigated.

4. Moreover, regarding to reducing the longitudinal vibration of bottom string in straight hole, there is the problem of optimization grouping between WOB and rotary speed.

5. Firstly, mathematic model based on bar's longitudinal vibration was funded and analysed. "

6. This paper emphasizes the longitudinal vibration of DS with actual boundary condition lower end of DS.

7. The mathematical model of longitudinal vibration bars is directly used for the dynamic analysis of helical springs.

8. The longitudinal vibration equation of elastic straight bar with nonlinear material under the action of axial force is set up.

9. The torsional vibration, longitudinal vibration and ben- ding vibration of slender shaft in lathing because of axial feeding are calculated and analyzed.

10. Longitudinal vibration model of the lifting container are built based on the viscoelastic model of lifting wirerope and solved with MATLAB6.5.

11. The expression format and application method of longitudinal vibration road spectrum were described.

12. The chaotic motion problem for the Longitudinal vibration of a nonlinear viscoelastic pile subjected to an axial periodic force is investigated.

13. This paper emphasizes the longitudinal vibration of DS with actual boundary condition of the lower end of DS.

13. Wish you can benefit from sentencedict.com and make progress everyday!

14. Especially, a physical phenomenon is found that transverse vibration mode shapes and longitudinal vibration mode shapes can transform mutually.

15. Aiming at wire rope and skip in loading, movement differential equations of skip with different mass and longitudinal vibration differential equations of wire rope were proposed.

16. On the basis of the above analysis, this paper establishes dynamic model on the longitudinal vibration of the overall belt conveyor system with finite elemental method.

17. The method of interpretation for fringes is obtained when the flexual vibration and longitudinal vibration appear simultaneously.

18. A general model is developed to analyze drill string vibration considering the coupled relations between longitudinal vibration, lateral vibration, and twisting vibration.

19. By means of the Taylor expansion technique, the asymptotic expressions of the dispersion curves at the long wavelength region were derived for flexural and longitudinal vibration modes.

20. The dynamic deflection moduli of particleboard were measured by flexural vibration . longitudinal transmission and longitudinal vibration.

21. The equation of lattice vibration of one-dimensional monatomic lattice and the equation of longitudinal vibration of a uniform bar are discussed.

22. The compoundtransducer is composed of the sandwich vibrator in longitudinal vibration and the circular thin plate in flexural vibration.

23. The frequency response function, frequency-domain and time-domain expressions for the longitudinal vibration velocity at the pile top were obtained further.