Statics Analysis of Integral Impeller Based on Finite Element

2013 ◽  
Vol 753-755 ◽  
pp. 1124-1127
Author(s):  
Li Da Zhu ◽  
Shuai Xu ◽  
Wen Wen Liu ◽  
Ji Jiang Wu ◽  
Jian Shi ◽  
...  
Keyword(s):  
Finite Element ◽  
Element Model ◽  
Stress And Strain ◽  
Total Deformation ◽  
Suction Surface ◽  
Maximum Deformation ◽  
Blade Tip ◽  
Tip Position ◽  
Element Theory ◽  
The Finite Element Model

Aim at the problem of machining integral impeller, a method of using finite element theory to carry out the statics analysis of impeller in this paper is studied. The finite element model is established, and then the nephogram of the impeller stress, strain and total deformation are obtained. The result is attained: in the case of impeller rotation and statics load, the maximum of stress and strain occur at the root of suction surface, the maximum of total deformation occurs on the blade tip position of suction surface, while the maximum deformation position has not changed, which increases with the increasing of rotation and statics load. The data results provide a theoretical reference for the machining of integral impeller.

The Finite Element Model of Discontinuous Rock Masses

2011 ◽  
Vol 243-249 ◽  
pp. 2948-2951 ◽  
Author(s):  
Heng Bin Wu ◽  
Ze Ping He
Keyword(s):  
Finite Element ◽  
Limit Equilibrium ◽  
Element Model ◽  
Discontinuous Deformation Analysis ◽  
Deformation Analysis ◽  
Sliding Surface ◽  
Discontinuous Deformation ◽  
Discontinuous Rock ◽  
Element Theory ◽  
The Finite Element Model

The traditional limit equilibrium theory could not consider the discontinuous property of rock slope, and the existing research methods for the discontinuous rock mass confined to the Discrete Element Method and Discontinuous Deformation Analysis. Based on the finite element theory, considering the strength reduction of the joint mechanical parameters, the slope stability with one or two sets joints are analyzed in this paper. The results show that, the sliding surface for one set joint slope is close to the joint dip, and the sliding surface for two sets joints slope is close to the control joint dip.

Simulation and Experimental Research of Disc Brake

2012 ◽  
Vol 472-475 ◽  
pp. 2251-2255
Author(s):  
Jin Lian Deng ◽  
Ying Ying Shan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Engineering Application ◽  
Element Model ◽  
Work Conditions ◽  
Stress And Strain ◽  
Element Analysis ◽  
Analysis Process ◽  
Disc Brakes ◽  
The Finite Element Model

Taking local-branded disc brakes for example, establishing the finite element model (FEM) of the assembly. Solving their stress and strain under work conditions, and the stress strain of its key components calipers and brackets is tested. The results showed that finite element analysis result of the caliper and bracket is consistent with experimental results, in line with engineering application, so finite element analysis process of brake assembly is feasible, finite element analysis for the brake industry to provide guidance.

Research on the Earthquake Dynamic Responses of Tunnel under Changing Tunnel Lining Rigidity

2011 ◽  
Vol 250-253 ◽  
pp. 1978-1982
Author(s):  
Xiao Ping Cao
Keyword(s):  
Finite Element ◽  
Dynamic Load ◽  
Element Model ◽  
Tunnel Lining ◽  
Dynamic Responses ◽  
Seismic Responses ◽  
Set Up ◽  
Deeply Buried Tunnel ◽  
Element Theory ◽  
The Finite Element Model

With the increasing of the quantity of the tunnel, more and more attentions have been paid to the tunnel destruction induced by earthquake. Based on the software of finite element, the finite element model for deeply buried tunnel have been set up; and the responses about different rigidity of tunnel lining under seismic dynamic load has been analyzed by using elastic finite element theory. The conclusions have been drawn that the change of seismic responses by increasing rigidity of tunnel lining is unobvious, and the method using increasing rigidity of tunnel lining to reduce the seismic responses of tunnel is uneconomical.

Voxel-based finite element modelling of wood elements based on spatial density and geometry data using computed tomography

Holzforschung ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jens U. Hartig ◽  
André Bieberle ◽  
Chris Engmann ◽  
Peer Haller
Keyword(s):  
Finite Element ◽  
Material Properties ◽  
Strain Distribution ◽  
Finite Element Modelling ◽  
Element Model ◽  
Spatial Density ◽  
Stress And Strain ◽  
Element Modelling ◽  
Stress And Strain Distribution ◽  
The Finite Element Model

Abstract In this paper, voxel-based finite element modelling based on spatial geometry and density data is applied to simulate the detailed stress and strain distribution in a large wood element. As example, a moulded wooden tube with a length of 3 m and a diameter of 0.3 m is examined. Gamma-ray computed tomography is used to obtain both, its actual geometric shape and spatial density distribution. Correlation functions (R2 ≈ 0.6) between density and elastic material properties are experimentally determined and serve as link for defining the non-uniform distribution of the material properties in the finite element model. Considering the geometric imperfections and spatial variation of the material properties, a detailed analysis of the stress and strain distribution of a wood element is performed. Additionally, a non-destructive axial compression test is applied on the wooden tube to analyse the load-bearing behaviour. By means of digital image correlation, the deformation of the surface is obtained, which also serves for validation of the finite element model in terms of strain distributions.

Finite Element Analysis of Deformation of the Multipoint Flexible Clamped Thin-Wall Component during Machining

2012 ◽  
Vol 542-543 ◽  
pp. 519-522
Author(s):  
Guo Qiang Cao ◽  
Yi Yu Sun
Keyword(s):  
Finite Element ◽  
Cutting Force ◽  
Vertical Direction ◽  
Element Model ◽  
Numerical Control ◽  
Skin Thickness ◽  
Thin Wall ◽  
Element Analysis ◽  
Maximum Deformation ◽  
The Finite Element Model

A study on deformation of multipoint flexible clamped thin-wall components during numerical control drilling in vertical direction downward is presented. The finite element model of multipoint flexible clamped thin-wall component during machining is established with program ANSYS, and a static analysis of deformation of the model is conducted. The laws of maximum deformation under different skin thickness, under different cutting force and on the 3 special machining paths in the cut area are obtained. The results show that the maximum deformation is linear with cutting force and exponential with skin thickness, and the function curves of the maximum deformation on the 3 special machining paths are all different, the function curve 2 is the composite superposition of the function curve 1 and the function curve 3.

Modeling and Dynamic Simulation of Cable

2012 ◽  
Vol 256-259 ◽  
pp. 2863-2866
Author(s):  
Wen Lin Yang ◽  
Zhong Bin Wang ◽  
Bing Lei Yan
Keyword(s):  
Finite Element ◽  
Response Curve ◽  
Element Model ◽  
Cable System ◽  
Motion Response ◽  
Finite Element Equation ◽  
Runge Kutta Method ◽  
Tension Curve ◽  
Element Theory ◽  
The Finite Element Model

The cable between elevator and cage was used as the object of this study, we use the finite element theory to establish the finite element model of the cable system. Then the motion response curve between the elevator and cage and the tension curve of the cable was gotten from solving the finite element equation by using the Runge-Kutta method. We have studied the effect of the length of the cable on the motion response between elevator and cage.

Modal Analysis of Arrow Shaped Shovel Based on ANSYS Workbench

2013 ◽  
Vol 385-386 ◽  
pp. 296-299
Author(s):  
Xu Hong Chu ◽  
Jun Fa Wang ◽  
Ren Bao Jiao ◽  
Hai Yang Wu ◽  
Li Fei Zhou
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Natural Frequencies ◽  
Element Model ◽  
Maximum Deformation ◽  
Constraint Processing ◽  
Odd Order ◽  
The Finite Element Model ◽  
Ansys Workbench

In order to optimize the kinetic parameters of arrow shaped shovel, the paper carried on the modal analysis and the 3D graph was drawing by the application of Pro/E software. The finite element model was established by using ANSYS Workbench. After the constraint processing, the first six model shapes of the rack were obtained through the modal analysis of arrow shaped shovel. Based on the modal analysis, it can be found that the first six natural frequencies enlarge with the increase of the order, and the odd order of principal modes are horizontal hunting along shovel handle on both sides, the even orders are up and down perpendicular to horizontal direction. The maximum deformation of the first six model of the rack occurs at shovel head. The results present a theoretical reference for improving and optimizing the shovel.

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

Analysis of Hydroelectric Unit’s Upper Bracket Based on Test and FEM

2014 ◽  
Vol 721 ◽  
pp. 131-134
Author(s):  
Mi Mi Xia ◽  
Yong Gang Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Element Model ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Element Analysis ◽  
Hydroelectric Unit ◽  
The Finite Element Analysis ◽  
Strain Rosette ◽  
The Finite Element Model

To research the load upper bracket of Francis hydroelectric unit, then established the finite-element model, and analyzed the structure stress of 7 operating condition points with the ANSYS software. By the strain rosette test, acquired the data of stress-strain in the area of stress concentration of the upper bracket. The inaccuracy was considered below 5% by analyzing the contradistinction between the finite-element analysis and the test, and match the engineering precision and the test was reliable. The finite-element method could be used to judge the stress of the upper bracket, and it could provide reference for the Structural optimization and improvement too.

Analysis of Premium Connection of Connecting and Sealing Ability Loaded by Axial Tensile Loads

2012 ◽  
Vol 268-270 ◽  
pp. 737-740
Author(s):  
Yang Yu ◽  
Yi Hua Dou ◽  
Fu Xiang Zhang ◽  
Xiang Tong Yang
Keyword(s):  
Finite Element ◽  
Contact Pressure ◽  
Tensile Load ◽  
Element Model ◽  
Sealing Ability ◽  
Axial Tensile ◽  
High Level ◽  
Maximum Contact ◽  
Contact Pressures ◽  
The Finite Element Model

It is necessary to know the connecting and sealing ability of premium connection for appropriate choices of different working conditions. By finite element method, the finite element model of premium connection is established and the stresses of seal section, shoulder zone and thread surface of tubing by axial tensile loads are analyzed. The results show that shoulder zone is subject to most axial stresses at made-up state, which will make distribution of stresses on thread reasonable. With the increase of axial tensile loads, stresses of thread on both ends increase and on seal section and shoulder zone slightly change. The maximum stress on some thread exceed the yield limit of material when axial tensile loads exceed 400KN. Limited axial tensile loads sharply influence the contact pressures on shoulder zone while slightly on seal section. Although the maximum contact pressure on shoulder zone drop to 0 when the axial tensile load is 600KN, the maximum contact pressure on seal section will keep on a high level.

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