Numerical Analysis of Soil Slope in Consideration of Creep Property

2014 ◽  
Vol 501-504 ◽  
pp. 410-414
Author(s):  
Qing Huan Wang ◽  
Yong Quan Li
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Numerical Analysis ◽  
Void Ratio ◽  
Creep Property ◽  
Element Model ◽  
Engineering Practice ◽  
Soil Slope ◽  
The Finite Element Model ◽  
Properties Of Soil

Drucker-Prager Model in consideration of creep property is deduced in detail, and the finite element model under Coupled Deformation and Seepage Fields is developed, which takes into account the effect of plastic deformation, saturation and void ratio on the properties of soil materials, the effect of water and soil interaction. The deformation of one soil slope is calculated by FEM during seepage. The results calculated show that the displacements calculated completely agree with the objective law. The way used may provide reference to engineering practice.

Numerical Analysis of the E-Type Diaphragm Based on ANSYS

2014 ◽  
Vol 623 ◽  
pp. 34-40
Author(s):  
Li Na Song ◽  
Jun Shao ◽  
De Quan Feng ◽  
Wei Fan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Numerical Model ◽  
Pressure Sensor ◽  
Element Model ◽  
Uniform Pressure ◽  
Sensing Element ◽  
Element Simulation ◽  
The Finite Element Model

With finite element method, the numerical model of the E-type diaphragm was built in this paper. Based on the model, we got the shear strain law of the E-type diaphragm surface under uniform pressure. Taking it as elastic element and the FBG as sensing element, we made a FBG pressure sensor and obtained the experiment result. The result fit well with finite element simulation value. It shows that the finite element model in the paper is reasonable and effective. The model can be used to design and optimize the sensor.

scholarly journals ANALYSIS OF FEATURES OF APPLIED SOFTWARE “LIRA” IN CALCULATIONS OF NON-CIRCULAR TUNNEL LININGS

2019 ◽  
pp. 41-50
Author(s):  
V. P. KUPRIY ◽  
O. L. TIUTKIN ◽  
P. YE. ZAKHARCHENKO
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Model ◽  
Software Package ◽  
Strain State ◽  
Element Model ◽  
Finite Element Models ◽  
Stress Strain ◽  
Stress Strain State ◽  
The Finite Element Model

Purpose. The article examines the effect on the stress-strain state of the parameters of the finite-element model created in the “Lira” software package in a numerical analysis of non-circular outlined tunnels. Methodology To achieve this goal, the authors developed finite element models of the calotte part of the mine during the construction of a double track railway tunnel using “Lira” software. In each of the models in the “Lira” software package, the interaction zone with temporary fastening was sampled in a specific way. After creation of models, their numerical analysis with the detailed research of his results was conducted. Findings. In the finite element models, the values of deformations and stresses in the horizontal and vertical axes, as well as the maximum values of the moments and longitudinal forces in the temporary fastening were obtained. A comparative analysis of the obtained values of the components of the stress-strain state with a change in the parameters of the finite element model was carried out. The graphs of the laws of these results from the discretization features of the two models were plotted. The third finite element model with a radial meshing in the zone of interaction of temporary support with the surrounding soil massif was investigated. Originality It has been established that in the numerical analysis of the SSS of a tunnel lining of a non-circular outline, its results substantially depend on the shape, size and configuration of the applied finite elements, on the size of the computational area of the soil massif, and also on the conditions for taking into account the actual (elastic or plastic) behavior of the soil massif.  Practical value. The features of discretization and the required dimensions of the computational area of the soil massif were determined when modeling the “lining – soil massif” system, which provide sufficient accuracy for calculating the parameters of the stress-strain state of the lining.

Effects of spall edge profiles on the edge plastic deformation for a roller bearing

2017 ◽  
Vol 233 (5) ◽  
pp. 850-861 ◽  
Author(s):  
Jing Liu ◽  
Zhifeng Shi ◽  
Yimin Shao ◽  
Huifang Xiao
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Finite Element Model ◽  
Deformation Zone ◽  
Element Model ◽  
Plastic Deformation Zone ◽  
Plastic Deformations ◽  
Zone Width ◽  
Rolling Element ◽  
The Finite Element Model

A clear understanding of the plastic deformations at the spall edges is a primary task for the edge propagation predictions in rolling element bearings. This work proposed an elastic–plastic two-dimensional finite element model for calculating the contact stress and plastic deformation between the rolling element and raceway. This model includes a rolling element and one raceway. The rectangular plane strain solid elements are used to formulate the finite element model. The Coulomb model is used to formulate the friction force between the rolling element and raceway. A bilinear kinematic hardening material model is used in the finite element model, which can formulate the elastic–plastic deformations. The studied spall edge profiles are assumed to be sharp and cylindrical ones. To validate the finite element model, the contact deformations between the rolling element and the raceway from the proposed model and Hertzian contact theory are compared. Effects of spall edge profiles on the edge plastic deformations at the edge are analyzed, as well as the edge plastic deformation zone width. Based on the numerical results, the relationship between the edge plastic deformation and the spall edge profile, and that between the edge plastic deformation zone width and the spall edge profile are established. The results show that the edge plastic deformation is significantly influenced by the spall edge profiles, as well as the edge plastic deformation zone width. This paper provides a clear understanding of the effects of the edge profiles on the plastic deformations and propagation at the spall edge.

scholarly journals Mechanical Characteristics of Asphalt Pavement Pothole Maintenance

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Fengjun Zhao ◽  
Yuhang Tang ◽  
Jianjun Wu ◽  
Zhi Huang ◽  
Mingyue Gao ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Void Ratio ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Element Model ◽  
Filling Material ◽  
Ansys Software ◽  
Structure Form ◽  
The Finite Element Model

Traditionally, potholes are mainly paved for maintenance, and the asphalt mixture needs to be compacted. But due to the construction quality problem, the compacting degree of asphalt mixture may not be enough and the void ratio of asphalt mixture may not meet the requirements, resulting in the premature damage of the potholes after repair. If the repair material can be prefabricated, this problem will be well solved. So, based on the structure form of the prefabricated rapid maintenance of asphalt pavement, this paper aims to determine the most unfavorable loading position in pothole repair, which was established by the ANSYS software with the finite element model. The results show that the most unfavorable loading position of tensile stress for patch materials and joint filling material is C1-1 (A2-2) and the most unfavorable loading position of shear stress for joint filling material and leveling layer is B2-1 and C1-5. Subsequently, the influences of the material modulus, size, thickness, and modulus of the old pavement material on the potholes are calculated by using the finite element model under the most unfavorable loading position.

Numerical Analysis and Research on the Profile Bending

2014 ◽  
Vol 608-609 ◽  
pp. 93-97
Author(s):  
Chao Zhang ◽  
Lin Long ◽  
Shang Yuan Guo
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Model ◽  
Element Model ◽  
Short Introduction ◽  
Basic Principles ◽  
Technical Parameters ◽  
Loading Modes ◽  
The Finite Element Model

This paper establishes a finite element model to analyze the effect of different loading modes and technical parameters on quality of profile bending molding. This paper firstly gives a short introduction of the technique, basic principles and loading modes of profile stretch molding. The process of aluminum stretch molding and the snapping back phenomenon are then simulated by the finite element model. The effect of different loading modes and technical parameters on quality of profile bending molding is also analyzed. Simulations results indicate that different loading modes and technical parameters have significant influence on the quality of the profile bending molding.

Topological Optimization Design of Cistern Stents of the Planomiller Machine Based on Hyperworks

2011 ◽  
Vol 421 ◽  
pp. 423-426
Author(s):  
Fu Yun Liu ◽  
Ying Sun ◽  
Tian Chao Yu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Optimization Design ◽  
Element Model ◽  
Topological Optimization ◽  
Structural Deformation ◽  
Engineering Practice ◽  
Geometry Model ◽  
Design Variables ◽  
The Finite Element Model

Planomiller is a milling machine that widely used in processes of large parts. Cistern stents is a component of planomiller supporting the sink. In this paper, topological optimization of Cistern stents is implemented to reduce its weight. Firstly geometry model of Cistern stents is built in SolidWorks, a finite element model of Cistern stents is established. Then loads and boundary conditions are loaded to the finite element model according to engineering practice. Finally density of units is set as the design variables, energy of structural deformation is set as the objective function, Cistern stents can be optimized by optimizing analysis. The compared results show that the proposed optimization design is effective.

The Study on Simulation Static Load Test Base on Flexibility Matrix

2012 ◽  
Vol 178-181 ◽  
pp. 2048-2051
Author(s):  
Xian Min Zhang ◽  
Yan Gao
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Static Load ◽  
Element Model ◽  
Load Test ◽  
Actual State ◽  
Engineering Practice ◽  
Static Load Test ◽  
Flexibility Matrix ◽  
The Finite Element Model

Through the measured simply supported bridge's dynamic parameters, we can establish the finite element model of the structure.As the flexibility matrix can reflect the actual state of the bridge, making the actual measured flexibility matrix as a basis to inverse the bridge’s finite element model .Combined with the engineering practice static load test, we can assess the bearing capacity of the bridge according to inversion model bridge.

Research on Stability Analysis of Soil Slope in Consideration of Creep Property

2013 ◽  
Vol 477-478 ◽  
pp. 514-518
Author(s):  
Qing Huan Wang ◽  
Yong Quan Li
Keyword(s):  
Finite Element ◽  
Stability Analysis ◽  
Water Level ◽  
Yield Surface ◽  
Creep Property ◽  
Engineering Practice ◽  
Soil Slope ◽  
Safety Factors ◽  
Slip Surfaces ◽  
Double Yield

The Viscoelasto-Plastic Model with Double Yield Surface is introduced in detail. Finite element equations are introduced when the deformation is considered under Coupled Deformation and Seepage Fields. The response of one soil slope is simulated during rapid drawdown of water level by FEM. The results calculated show that the critical slip surfaces and safety factors by two ways are pretty close. To assure the safety of the slope, the design of anti-slide piles is carried out. Those ways used may provide reference to engineering practice.

A Study on the Numerical Analysis of Three-Dimensional Parachute Inflation Process

2012 ◽  
Vol 479-481 ◽  
pp. 2582-2585
Author(s):  
Jia Qian ◽  
Han Cheng ◽  
Li Hua Su
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Dynamic Change ◽  
Three Dimensional ◽  
Element Model ◽  
Arbitrary Lagrangian Eulerian ◽  
Coupling Calculation ◽  
Parachute Inflation ◽  
Accuracy Of Results ◽  
The Finite Element Model

The finite element model of a folded parachute is established in this paper. The dynamic change of structure and flow field during the parachute inflation process is obtained based on Arbitrary Lagrangian-Eulerian (ALE) coupling calculation. The accuracy of results is verified by wind tunnel tests. The present work is significant for improving parachute performance analysis, and also can be referenced by other fabrics analysis.

Redrawing Operation a Star Shape from Cylindrical Shape Using Experimental and FE Analysis

2020 ◽  
Vol 38 (1A) ◽  
pp. 25-32
Author(s):  
Waleed Kh. Jawad ◽  
Ali T. Ikal
Keyword(s):  
Finite Element ◽  
Effective Strain ◽  
Element Model ◽  
Cylindrical Shape ◽  
Element Analysis ◽  
Punch Force ◽  
Maximum Value ◽  
Element Simulation ◽  
Blank Sheet ◽  
The Finite Element Model

The aim of this paper is to design and fabricate a star die and a cylindrical die to produce a star shape by redrawing the cylindrical shape and comparing it to the conventional method of producing a star cup drawn from the circular blank sheet using experimental (EXP) and finite element simulation (FES). The redrawing and drawing process was done to produce a star cup with the dimension of (41.5 × 34.69mm), and (30 mm). The finite element model is performed via mechanical APDL ANSYS18.0 to modulate the redrawing and drawing operation. The results of finite element analysis were compared with the experimental results and it is found that the maximum punch force (39.12KN) recorded with the production of a star shape drawn from the circular blank sheet when comparing the punch force (32.33 KN) recorded when redrawing the cylindrical shape into a star shape. This is due to the exposure of the cup produced drawn from the blank to the highest tensile stress. The highest value of the effective stress (709MPa) and effective strain (0.751) recorded with the star shape drawn from a circular blank sheet. The maximum value of lamination (8.707%) is recorded at the cup curling (the concave area) with the first method compared to the maximum value of lamination (5.822%) recorded at the cup curling (the concave area) with the second method because of this exposure to the highest concentration of stresses. The best distribution of thickness, strains, and stresses when producing a star shape by

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