Beam-solid contact formulation for finite element analysis of pile-soil interaction with arbitrary discretization

2014 ◽  
Vol 38 (14) ◽  
pp. 1453-1476 ◽  
Author(s):  
J. Ninić ◽  
J. Stascheit ◽  
G. Meschke
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Solid Contact ◽  
Element Analysis ◽  
Contact Formulation

A Finite Element Analysis of Surface Pocket Effects in Hertzian Line Contact

1999 ◽  
Vol 122 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Jiaxin Zhao ◽  
Farshid Sadeghi ◽  
Harvey M. Nixon
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Kinematic Hardening ◽  
Lubricant Film ◽  
Solid Contact ◽  
Element Analysis ◽  
Beneficial Effects ◽  
Fea Model ◽  
Start Up ◽  
Significant Compression

During start up and shut down of heavily loaded rolling/sliding contacts, the lubricant film separating the surfaces is extremely thin and not fully developed. The load is supported by both the solid and the lubricant. Under extreme conditions, there is no lubricant film and the load is solely supported by the solid contact. However, when surface pockets are engineered on the surface of rolling/sliding elements, lubricant can be trapped in the pockets and deform with the pockets. Finite element analysis [FEA] of the deformation of a single empty pocket indicates that the volume of the pocket significantly decreases under an applied load. Therefore, when the pocket is filled with a lubricant, the lubricant will undergo significant compression. This compression enables lubricant to support part of the load and provide beneficial effects, such as reducing friction and expelling the lubricant during start up and shut down. This research presents an FEA model of a rigid cylinder in contact with an elastic and/or elastic-linear-kinematic-hardening-plastic half space with lubricant filled surface pocket(s). Results of lubricant filled pockets are compared with those of empty pockets. The results demonstrate the beneficial effects of load sharing mechanism by the lubricant. [S0742-4787(00)00801-8]

Finite element analysis on dental implant[ndash ]supported prostheses without passive fit

2002 ◽  
Vol 11 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Chatchai Kunavisarut ◽  
Lisa A. Lang ◽  
Brian R. Stoner ◽  
David A. Felton
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dental Implant ◽  
Element Analysis ◽  
Passive Fit

Performance enhancement of normal contact ratio gearing system through correction factor

2019 ◽  
Vol 13 (3) ◽  
pp. 5242-5258
Author(s):  
R. Ravivarman ◽  
K. Palaniradja ◽  
R. Prabhu Sekar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Correction Factor ◽  
Bending Strength ◽  
Performance Enhancement ◽  
Transmission Ratio ◽  
Contact Ratio ◽  
Element Analysis ◽  
Normal Contact ◽  
Root Region

As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be industrialized. To attain this objective, it is proposed to put on the idea of modifying the correction factor in such a manner that the bending strength of the gearing system is improved. In this work, the correction factor is modified in such a way that the stress in the root region is equalized between the pinion and wheel. This equalization of stresses is carried out by providing a correction factor in three circumstances: in pinion; wheel and both the pinion and the wheel. Henceforth performances of this S+, S0 and S- drives are evaluated in finite element analysis (FEA) and compared for balanced root stresses in parallel shaft spur gearing systems. It is seen that the outcomes gained from the modified drive have enhanced performance than the standard drive.

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