scholarly journals Numerical Analysis of Geocell Protective Slope Stability

2013 ◽  
Vol 7 (1) ◽  
pp. 223-231
Author(s):  
Guangyue Wang ◽  
Jianpeng Zhang ◽  
Tianyu Xu
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Finite Element Software ◽  
Ecological Protection ◽  
Mechanics Performance ◽  
Overall Stability ◽  
Soil Shear Strength ◽  
Stability Of Slope ◽  
Rainfall Seepage ◽  
The Finite Element Model

Geocell protective slope is a kind of important ecological protection form, which is widely used in the geotechnical engineering field. Based on the finite element software ABAQUS, and combining with protective slope body’s mechanics performance in shallow soil, the finite element model of geocell slope protection is established under the conditions of rainfall seepage, and then we simulate the shallow and the overall stability of slope in rainfall seepage cases. The results show that the safety factor of slope body increased by about 14% when using geocell slope protection and it reduces the displacement of slope surface effectively, it prolongs the destruction time of the slope under the condition of continuous reduction of soil shear strength, and it further helps reducing the collapse or part of slope sliding of slope disasters.

Numerical Analysis of Geocell Protective Slope Stability

2013 ◽  
Vol 353-356 ◽  
pp. 635-639
Author(s):  
Guang Yue Wang ◽  
Jian Peng Zhang ◽  
Jian Wu Zhao
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Finite Element Software ◽  
Ecological Protection ◽  
Mechanics Performance ◽  
Overall Stability ◽  
Soil Shear Strength ◽  
Stability Of Slope ◽  
Rainfall Seepage ◽  
The Finite Element Model

Geocell protective slope is a kind of important ecological protection form, which is widely used in the geotechnical engineering field. Based on the finite element software ABAQUS, and combining with protective slope bodys mechanics performance in shallow soil, the finite element model of geocell slope protection is established under the conditions of rainfall seepage, and then we simulate the shallow and the overall stability of slope in rainfall seepage cases. The results show that the safety factor of slope body increased by about 14% when using geocell slope protection and it reduces the displacement of slope surface effectively, it prolongs the destruction time of the slope under the condition of continuous reduction of soil shear strength, and it further helps reducing the collapse or part of slope sliding of slope disasters.

Finite Element Analysis of Frame of Dump Truck

2015 ◽  
Vol 733 ◽  
pp. 591-594
Author(s):  
Yong Zhen Zhu ◽  
Kuo Yang ◽  
Qi Yang ◽  
Yun De Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
3D Model ◽  
Element Model ◽  
Dump Truck ◽  
Stress Distributions ◽  
Improved Method ◽  
Element Analysis ◽  
Finite Element Software ◽  
The Finite Element Model

The CAD software was used to establish 3D model of frame of dump truck, and the finite element model was established through Hyper Mesh. The stress distributions of the frame in vertical accelerating, turning, twisting and climbing conditions were computed through finite element software when the dump truck was loaded 80t. The result is consistent with the actual situation of the frame, which proved that the approach of finite element analysis is feasible. And we proposed the improved method of the frame according to finite element results.

Design and Simulation of the New Bionic Soil Extruding Head

2012 ◽  
Vol 479-481 ◽  
pp. 457-461
Author(s):  
Dong Hui Chen ◽  
Xin Lu ◽  
Xing Wang Chai ◽  
Bao Gang Wang ◽  
Hong Xia Guo ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Simulation Model ◽  
Element Model ◽  
Maximum Force ◽  
Soil Parameters ◽  
Drilling Depth ◽  
Finite Element Software ◽  
Changing Trends ◽  
The Finite Element Model

In this paper，soil parameters and the collected data were tested and processed, and the changing trends of force with drilling depth were obtained and the maximum force applying to the working components was picked up. Compared with the smooth working component, the force applying to the unsmooth working components is smaller. Some parameters needed in Drucker-Prager soil model were measured and modified according to the basic tests. The simulation model was built in the finite element software -ANSYS. The simulation result is consistent with the actual testing result, which confirms the finite element model is correct .

Study on Finite Element Model of Bridge Multi-Pile Foundation

2010 ◽  
Vol 456 ◽  
pp. 103-114
Author(s):  
Shi Ling Xing ◽  
Jian Shu Ye ◽  
Hang Sun
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Pile Foundation ◽  
Bending Moment ◽  
Highway Bridges ◽  
Element Model ◽  
Boundary Constraints ◽  
Finite Element Software ◽  
Friction Pile ◽  
The Finite Element Model

In order to use finite element software to complete the design or calculation of bridge multi-pile foundation, this paper discusses the finite element model (FEM) of a bridge multi-pile based on the theory and provisions in Code for Design of Ground Base and Foundation of Highway Bridges and Culverts (CDGBFHBC 2007) of china. For the FEM of a bridge-multi pile foundation, cap is regarded as a rigid body, piles are taken as beams, and boundary constraints are a series of horizontal springs and vertical springs. First, the formula of stiffness for horizontal springs and bottom vertical spring is derived according to elastic ground base theory and winkler hypotheses. Secondly, for the friction pile, the stiffness of vertical springs on piles side is derived basis of the principle of friction generated and simplified distribution of pile shaft resistance. Then, the FEM of multi-pile needs pay attention to three issues: the simulation of connections between piles and cap, elastic modulus needs discount, and the weight for pile underneath the ground line (or local scour line) needs calculate by half. Taking pile section bending moment often control the design and calculation of pile into account, this paper gives a simplified FEM of pile. Finally, an example is used to introduce the application of the FEM of bridge multi-pile foundation.

Finite Element Analysis to Vibratory Drum - Soil Model of Vibratory Roller

2011 ◽  
Vol 94-96 ◽  
pp. 2005-2008 ◽  
Author(s):  
Yuan Wen Cao ◽  
Xue Jiao Huang ◽  
Li Ying Ma ◽  
Sheng Qiu ◽  
Shao Xiong Gui
Keyword(s):  
Finite Element ◽  
Longitudinal Vibration ◽  
Soil Surface ◽  
Element Model ◽  
Element Analysis ◽  
Soil System ◽  
Linear Character ◽  
Finite Element Software ◽  
Vibration Compaction ◽  
The Finite Element Model

In this paper a dynamical equation about vibratory drum - soil system was set based on the non-linear character of vibration compaction of vibratory roller. The finite element model of vibratory drum - soil system was established by the finite element software ABAQUS, with which the vibration compaction process of vibratory drum is simulated. According to the analysis of the vibration propagation on the soil surface, the longitudinal vibration propagation of soil, the stress and strain of the soil under the vibratory drum, results have proved that it is valid to simulate the interaction between vibratory drum and soil by the nonlinear finite element method, which offered a new way to research the interaction between vibratory drum and soil.

The Thermal Effect in Wheel and Rail during the Brake of Port Crane

2012 ◽  
Vol 487 ◽  
pp. 879-883
Author(s):  
Jiang Wei Wu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Model ◽  
Thermal Effect ◽  
Thermal Effects ◽  
Element Model ◽  
The Finite Element Method ◽  
Finite Element Software ◽  
Frictional Coefficients ◽  
The Finite Element Model

With the port crane getting bigger and heavier, and also moving much faster than before, the thermal effect in wheel and rail during the brake process can be a reason of the failure of port crane. In this paper, the thermal effect during the brake process of port crane is studied using the finite element method. Based on the finite element model, the ANSYS10.0 finite element software is used. The thermal effects under different coefficients are discussed. Three different slide speed of wheel, two different loads of crane, and three different frictional coefficients are applied. The importance of the different coefficients is obtained from the numerical results.

Comparative Analysis of Crack Growth Characteristics Based on Virtual Crack Closure Technique

2014 ◽  
Vol 633-634 ◽  
pp. 59-62
Author(s):  
Wen Lin Liu ◽  
Da Zhao Yu ◽  
Zhong Hu Jia
Keyword(s):  
Finite Element ◽  
Crack Growth ◽  
Crack Closure ◽  
Element Model ◽  
Virtual Crack Closure Technique ◽  
Closure Technique ◽  
Engineering Structures ◽  
Finite Element Software ◽  
User Subroutine ◽  
The Finite Element Model

The strain energy rate and the stress intensity factors in different crack growth stage were analyzed by virtual crack closure technique. The user subroutine is complied using Abaqus finite element software. The finite element model of crack growth was established by the Paris formula, then the fatigue crack growth process is simulated, the crack growth life is predicted. The method could be a powerful tool for engineers to study the fracture and fatigue problems in engineering structures.

scholarly journals Numerical Analysis of Eccentrically Loaded Cold-Formed Plain Channel Columns

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
A. P. Nivethitha ◽  
G. Vani ◽  
P. Jayabalan
Keyword(s):  
Finite Element ◽  
Parametric Study ◽  
Ultimate Load ◽  
Element Model ◽  
Free Edge ◽  
General Purpose ◽  
Element Analysis ◽  
Finite Element Software ◽  
Axially Loaded ◽  
The Finite Element Model

Finite element analysis of pinned cold-formed plain channel columns of different width-to-thickness ratios is presented in this paper. The study is focused not only on axially loaded columns, but also on eccentrically loaded columns. The general purpose finite element software ABAQUS 6.12 was used, and the force controlled loading was adopted. Geometric and material nonlinearities were incorporated in the finite element model. The ultimate loads are compared with the direct strength method (DSM) for axially loaded columns. Also, a parametric study is done by varying the length of the column and width of the unstiffened element. It is observed that the results correlate better with the DSM values for columns having unstiffened elements of lower bf/t ratios. The change in ultimate load is studied only in ABAQUS, as the position of load moves towards the free edge and the supported edge of the unstiffened element. A parametric study is done by varying the nonuniform compression factor for the columns. It is observed that the ultimate load increases as the position of load moves towards the supported edge and it is influenced by the bf/t ratio of the unstiffened element.

Study on Expression of SIF for Tapered Lug Subjected to Oblique Pin-Load

2011 ◽  
Vol 299-300 ◽  
pp. 1203-1207
Author(s):  
Li Ming Wu ◽  
Yu Ting He ◽  
Hai Wei Zhang ◽  
Rong Hong Cui ◽  
Jin Qiang Du
Keyword(s):  
Boundary Condition ◽  
Stress Intensity Factor ◽  
Finite Element ◽  
Element Model ◽  
Outer Radius ◽  
Finite Element Software ◽  
Tapered Angle ◽  
Inside Radius ◽  
Damage Tolerant ◽  
The Finite Element Model

The finite element model of a symmetric tapered attachment lug is built by using the finite element software ANSYS, a cosine pin-bearing pressure distribution is applied on the surface of the pin-hole as a boundary condition. The stress intensity factor (SIF) expression for a single through-the-thickness crack in a symmetric attachment lug subjected to an oblique pin-load less than 45 degrees is determined by studying on the effect of the dimensionless crack length (a/R1)，the ratio of outer radius to inside radius (R2/R1), the inside radius (R1), the tapered angle (β) of lug and the load degree (α) on SIF value. The paper can be helpful in assessing and designing damage tolerant attachment lugs.

Damage identification in concrete structures with uncertain but bounded measurements

2016 ◽  
Vol 16 (6) ◽  
pp. 649-662 ◽  
Author(s):  
Suryakanta Biswal ◽  
Ananth Ramaswamy
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Posterior Probability ◽  
Optimization Technique ◽  
Concrete Structures ◽  
Element Model ◽  
Reinforced Concrete Beams ◽  
Finite Element Software ◽  
Damage Indices ◽  
The Finite Element Model

The major sources of error in the measurements of concrete structures are the gauge sensitivities, calibration accuracies, amplitude linearities, and temperature corrections to the gauge sensitivities, which are given in terms of plus–minus ranges, and the round off errors in the measured responses, which are better represented by interval bounds. An algorithm is proposed adapting the existing modified Metropolis Hastings algorithm for estimating the posterior probability of the damage indices as well as the posterior probability of the bounds of the interval parameters, when the measurements are given in terms of interval bounds. A damage index is defined for each element of the finite element model considering the parameters of each element are intervals. Methods are developed for evaluating response bounds in the finite element software ABAQUS, when the parameters of the finite element model are intervals. The proposed method is validated against reinforced concrete beams with three damage scenarios mainly (1) loss of stiffness, (2) loss of mass, and (3) loss of bond between concrete and reinforcement steel, which have been tested in our laboratory. Comparison of the prediction from the proposed method with those obtained from Bayesian analysis and interval optimization technique show improved accuracy and computational efficiency in addition to better representation of measurement uncertainties through interval bounds.

Sign in / Sign up

Export Citation Format

Share Document