A Method for Determining the Value of m Based on PLAXIS Nonlinear Finite Element Analysis

2011 ◽  
Vol 250-253 ◽  
pp. 1483-1488
Author(s):  
Jin Song Gui ◽  
Zhen Guo Li ◽  
Qing Meng ◽  
Bo Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bending Moment ◽  
Nonlinear Finite Element Analysis ◽  
Internal Force ◽  
Nonlinear Finite Element ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Finite Element Software ◽  
Selection Of

The value selection of m has a greater influence on the internal force of pile. So, how to determine the value of m is very important for the “m” method. In this paper, a geotechnical finite element software PLAXIS is used for the nonlinear finite element analysis of elastic long pile under the horizontal force action. By using the calculated maximum bending moment and the maximum displacement at the ground, and combined with the related formula for “m” method given in 《Code for Pile Foundation of Harbour Engineering》, a more accurate value of m can be obtained conveniently. Because this method is simple and practical, it can provide a useful reference for the project designer to determine a reasonable value of m.

Study on the Influence Factors of m Value Based on PLAXIS Nonlinear Finite Element Analysis

2011 ◽  
Vol 71-78 ◽  
pp. 3457-3461
Author(s):  
Jin Song Gui ◽  
Zhen Guo Li ◽  
Guo Qiang Chen ◽  
Qing Meng ◽  
Bo Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Influence Factors ◽  
Bending Moment ◽  
Nonlinear Finite Element Analysis ◽  
Nonlinear Finite Element ◽  
Related Factors ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Finite Element Software

In this paper, a geotechnical finite element software PLAXIS is used for the nonlinear finite element analysis of elastic long pile under the horizontal force action. By using the calculated maximum bending moment and the maximum displacement at the ground, and combined with the related formula for “m” method given in《 Code for Pile Foundation of Harbour Engineering》, a more accurate m value can be obtained conveniently. Based on this method and by the single factor analysis, a more systematic study was made to the related factors,and obtained the influence law of various factors to m value.

scholarly journals Study on the characteristics of pipe buckling strength under pure bending and external stress using nonlinear finite element analysis

2021 ◽  
Vol 12 (2) ◽  
pp. 110-116
Author(s):  
Hartono Yudo ◽  
Wilma Amiruddin ◽  
Ari Wibawa Budi Santosa ◽  
Ocid Mursid ◽  
Tri Admono
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bending Moment ◽  
Nonlinear Finite Element Analysis ◽  
External Pressure ◽  
Diameter Ratio ◽  
Nonlinear Finite Element ◽  
Pure Bending ◽  
Element Analysis ◽  
Buckling Strength

Buckling and collapse are important failure modes for laying and operating conditions in a subsea position. The pipe will be subjected to various kinds of loads, i.e., bending moment, external pressure, and tension. Nonlinear finite element analysis was used to analyze the buckling strength of the pipe under pure bending and external pressure. The buckling of elastic and elasto-plastic materials was also studied in this work. The buckling strength due to external pressure had decreased and become constant on the long pipe when the length-to-diameter ratio (L/D) was increased. The non-dimensional parameter (β), which is proportionate to (D/t) (σy/E), is used to study the yielding influence on the buckling strength of pipe under combined bending and external pressure loading. The interaction curves of the buckling strength of pipe were obtained, with various the diameter-to-thickness ratio (D/t) under combination loads of external pressure and bending moment. For straight pipes L/D = 2.5 to 40, D = 1000 to 4000 mm, and D/t = 50 to 200 were set. The curved pipes D/t = 200, L/D =2.5 to 30 have been investigated by changing the radius of curvature-to-diameter ratio (R/D) from 50 to ∞, for each one. With decreasing R/D, the buckling strength under external pressure decreases slightly. This is in contrast to the bending of a curved pipe. When the value of R/D was decreased, the flexibility of the pipe was increased. However, the buckling strength of the pipe during bending was decreased due to the oval deformation at the cross-section.

Nonlinear Finite Element Analysis on the Steel Frame with Semi-Rigid Connection under Periodic Load

2011 ◽  
Vol 255-260 ◽  
pp. 614-618
Author(s):  
Lai Wang ◽  
Bo Shun Liu ◽  
Ning Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Finite Element Analysis ◽  
Steel Frame ◽  
Nonlinear Finite Element ◽  
Periodic Load ◽  
Element Analysis ◽  
Finite Element Software ◽  
Rigid Connection ◽  
Material Nonlinear

In this paper, nonlinear finite element analysis on the steel frame with top-seat angle and double web-angles semi-rigid connection were carried out with ANSYS finite element software. In the analysis, connective, geometrical and material nonlinear were considered. Compare analysis results with experimental results, the influence of semi-rigid connection’s flexibility on steel frame was studied and some references to the design of steel frame with semi-rigid connection were supplied.

Study on the Determination Method and Influence Factors of m Value Based on Nonlinear Finite Element Analysis

2014 ◽  
Vol 1065-1069 ◽  
pp. 302-307
Author(s):  
Zhen Guo Li ◽  
Jin Song Gui ◽  
Run Fu Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Pile Foundation ◽  
Influence Factors ◽  
Nonlinear Finite Element Analysis ◽  
Nonlinear Finite Element ◽  
Related Factors ◽  
Element Analysis ◽  
Finite Element Software ◽  
Single Factor Analysis

The determining of m value in “m” method has great significance to force analysis of pile foundation buried segments. In this paper, a finite element software is used for the nonlinear finite element analysis of elastic long pile under the horizontal force action, and combined with the related provisions and formulas for “m” method given in 《Code for Pile Foundation of Harbour Engineering》, a accurate m value can be obtained conveniently. Then based on this method and by the single factor analysis, a more systematic study was made to the related factors, and obtained the influence law of various factors to m value.

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