Biomechanical stress distribution on fixation screws used in bilateral sagittal split ramus osteotomy: assessment of 9 methods via finite element method

2011 ◽  
Vol 40 (10) ◽  
pp. 1083
Author(s):  
M.H. Seif Tabrizi ◽  
B. Bohluli ◽  
F. Sarkarat ◽  
N. Moharam Nejad
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Sagittal Split Ramus Osteotomy ◽  
Biomechanical Stress ◽  
Element Method

Biomechanical Stress Distribution on Fixation Screws Used in Bilateral Sagittal Split Ramus Osteotomy: Assessment of 9 Methods via Finite Element Method

2010 ◽  
Vol 68 (11) ◽  
pp. 2765-2769 ◽  
Author(s):  
Behnam Bohluli ◽  
Mohammad Hosein Kalantar Motamedi ◽  
Pedram Bohluli ◽  
Farzin Sarkarat ◽  
Nima Moharamnejad ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Sagittal Split Ramus Osteotomy ◽  
Biomechanical Stress ◽  
Element Method

scholarly journals Assessment of Rectangular Cavity in Concrete Gravity Retaining Wall using Finite Element Method

2019 ◽  
Vol 8 (4) ◽  
pp. 2656-2661
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Cross Section ◽  
Retaining Wall ◽  
Rectangular Cavity ◽  
Gravity Retaining Wall ◽  
The Cross ◽  
Conditions Of Stability ◽  
Element Method

The design of the Gravity retaining wall (GRW) is a trial and error process. Prevailing conditions of backfill are used to determine the profile of GRW, which proceeds with the selection of provisional dimensions. The optimum section is having factors of safety of stability higher than the allowable values and stresses in the cross-section smaller than permissible. The cross-section is designed to fulfill conditions of stability, subjected to very low stresses. The strength of the material, which is provided in the cross-section remains unutilized. A computer program is developed to find stresses at various locations on the cross-section of GRW using the Finite Element Method (FEM). A discontinuity in the form of a rectangular cavity is introduced in the cross-section of GRW to optimize it. The rectangular cavity is introduced in the cross-section of GRW at different locations. An attempt is made in this paper to find the stress distribution in the gravity retaining wall cross-section and to study the effect of the rectangular cavity on the stress distribution. Two cases representing different locations are considered to study the effect of the cavity. The location of the cavity is distinguished by the parameter w, the effects of cases with varied was 0.2305 (Case-I) and 0.1385 (Case-II) are observed. The cavity, which is provided not only makes the wall structurally efficient but also economically feasible.

Effect of Internal Pressure on Flexibility Factors in Pipe Elbows With End Constraints

1985 ◽  
Vol 107 (1) ◽  
pp. 60-63 ◽  
Author(s):  
R. Natarajan ◽  
S. Mirza
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Distribution ◽  
Internal Pressure ◽  
Numerical Results ◽  
Flexibility Factor ◽  
Bend Angles ◽  
Element Method

Finite element method has been used in the present work to study the stress distribution in an elbow with end constraints subjected to in-plane moment and pressure. Elbows of short radius (R/r) with varying pipe factors and bend angles have been considered. Present numerical results show for all elbow angles that follower pipe factors (thin pipes) the internal pressure reduces the flexibility factor by a larger amount than for elbows having larger pipe factors. These results are in line with the conclusions published earlier.

Improvements for a Hydraulic Excavator's Boom

2014 ◽  
Vol 490-491 ◽  
pp. 510-513
Author(s):  
Sheng Bin Wu ◽  
Xiao Bao Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
High Stress ◽  
The Finite Element Method ◽  
Element Method ◽  
Concentration Phenomenon

Focus on stress concentration and high stress area, four improvements were put forward through analyzed a hydraulic excavator's boom with the finite element method under the bucket digging condition. Compared the stress distribution graph, the results show that these schemes can improve the stress concentration phenomenon and the high stress distribution areas. The practices demonstrated the effectiveness to reduce the invalidation rate of hydraulic excavator's boom.

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