The Safety Study on Corrosion Damage of LC4 Aluminum Alloys by Finite Element Method

2010 ◽  
Vol 118-120 ◽  
pp. 176-180 ◽  
Author(s):  
Zhen Guo Wang ◽  
Sheng Li Lv ◽  
Cheng Long Xu ◽  
Wei Zhang
Keyword(s):  
Finite Element ◽  
Residual Strength ◽  
Corrosion Damage ◽  
Analysis Procedure ◽  
Solid Model ◽  
Three Dimension ◽  
Safety Study ◽  
Element Analysis ◽  
Damage Data ◽  
3D Solid

. The corrosion damage data are obtained through the pre-corrosion accelerated experiment which is performed under three different time levels: 24h, 48h and 72h. Based on the corrosion damage data, a three-dimension (3D) solid model is created by CAD. An analysis procedure is developed using CAD and finite element analysis to predict stresses and residual strength due to corroded pits. The residual strength results of specimens are obtained from the model based on the corrosion damage data. The simulation results are compared with the true testing static intensity results and the method is proved that it is reliable and effective in engineering.

Three-Dimension Reconstruction of Pit Corrosion Damage Morphology and Digital Simulation

2010 ◽  
Vol 44-47 ◽  
pp. 4186-4190 ◽  
Author(s):  
Sheng Li Lv ◽  
Zhen Guo Wang ◽  
Cheng Long Xu ◽  
Wei Zhang
Keyword(s):  
Fatigue Life ◽  
Crack Nucleation ◽  
Digital Simulation ◽  
Research Work ◽  
Corrosion Damage ◽  
Nucleation Site ◽  
Three Dimension ◽  
Element Analysis ◽  
Damage Data ◽  
Residual Fatigue

According to the various grey values at different regions in an image, a three-dimension (3D) solid model is reconstructed based on the pitting corrosion damage data obtained from the pre-corrosion accelerated experiment which is performed under four different time levels: 12h, 24h, 48h and 72h by CAD. An analysis procedure is developed using finite element analysis to predict stresses and the crack nucleation site due to corroded pits. Based on the observations on fatigue fracture section, the AFGROW software is used to simulate the influence of a variety of corrosion damages and corrosion pit depths on the specimen’s residual fatigue life. An effective and reliable engineering method for predicting fatigue life of corroded specimen is established on the base of this research work.

Corrosion Damage Residual Strength Research of Shot Peening Aluminum Alloy

2011 ◽  
Vol 121-126 ◽  
pp. 2587-2591
Author(s):  
Sheng Li Lv ◽  
You Cui ◽  
Wei Zhang ◽  
Xiao Yan Tong
Keyword(s):  
Aluminum Alloy ◽  
Surface Treatment ◽  
Residual Strength ◽  
Shot Peening ◽  
Corrosion Damage ◽  
Solid Model ◽  
Element Analysis ◽  
Engineering Technique ◽  
Relationship Of ◽  
The Relationship

The pre-corrosion damage tests of LC4 aluminum alloy with the shot peening surface treatment and un-shot peening surface treatment are performed under different time levels. The residual strength has been studied by test after corrosion damage. An analysis procedure is developed using 3D reconstruction solid model and finite element analysis to predict residual strength, The relationship of static intensity and the corrosion damage are founded. An effective engineering technique for predicting residual strength of corroded structure is established on the base of this studying work.

scholarly journals 3D Solid Model Establishment and Finite Element Analysis of Corn Seed

2016 ◽  
Vol 11 (6) ◽  
pp. 444-447
Author(s):  
Zhang Xin-Wei ◽  
Yi Ke-Chuan ◽  
Huang Min ◽  
Liu Hong-Xia
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Solid Model ◽  
Element Analysis ◽  
Corn Seed ◽  
3D Solid

The 3D Solid Model and Finite Element Analysis of Working Device of Loader ZL16H

2013 ◽  
Vol 834-836 ◽  
pp. 1512-1515
Author(s):  
Qiu Bo Huang ◽  
Dian Cao ◽  
Ji Yong Dai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Solid Model ◽  
Element Analysis ◽  
Parametric Generation ◽  
The Finite Element Analysis ◽  
Wheel Loaders ◽  
3D Solid ◽  
Working Device

In this paper, wheel loaders, for example, the use of Solidworks software loader attachment parts and other parts of the three-dimensional solid modeling, parametric generation components and for assembly; the finite element analysis of the working device, and check the strength.

Study on Crankshaft Design Based on CAD/CAE

2011 ◽  
Vol 201-203 ◽  
pp. 830-835
Author(s):  
Chang Gao Xia ◽  
Jian Kuan Su ◽  
Mao Hui Pan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Parametric Modeling ◽  
Analysis Procedure ◽  
Secondary Development ◽  
Design Quality ◽  
Element Analysis ◽  
Integrated Method ◽  
Engine Crankshaft

This paper presents an integrated method, which is based on the CAD/CAE, for engine crankshaft design. A parametric modeling system of engine crankshaft is established with the CATIA secondary development tools. Taking advantage of the finite element analysis procedure of engine crankshaft strength which is programmed with ANSYS APDL programming language, the parametric loading, automatic solution and result analysis of the crankshaft strength can be realized. Integrating the parametric modeling system of engine crankshaft and the special finite element analysis procedure of the engine crankshaft strength, the three-dimensional digital model of the crankshaft can be generated rapidly. By changing the structure dimension, the crankshaft series design is achieved and the design and analysis can be improved. Therefore, it is helpful to improve the design quality and efficiency of crankshaft and shorten the design cycle.

Verification of a Finite Element Analysis Procedure for Modeling the Nonlinear, Monotonic In-Plane Behavior of 4 Inch, Schedule 10, Stainless Steel, 90° Elbows

2003 ◽  
Author(s):  
James K. Wilkins
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stainless Steel ◽  
Nonlinear Behavior ◽  
Shell Element ◽  
Analysis Procedure ◽  
Hoop Strain ◽  
Element Analysis ◽  
Butt Welding ◽  
Strain Data

A project has been conducted to verify a finite element analysis procedure for studying the nonlinear behavior of 90°, stainless steel, 4 inch schedule 10, butt welding elbows. Two displacement controlled monotonic in-plane tests were conducted, one closing and one opening, and the loads, displacements, and strains at several locations were recorded. Stacked 90° tee rosette gages were used in both tests because of their ability to measure strain over a small area. ANSYS shell element 181 was used in the FEA reconciliations. The FEA models incorporated detailed geometric measurements of the specimens, including the welds, and material stress-strain data obtained from the attached straight piping. Initially, a mesh consisting of sixteen elements arrayed in 8 rings was used to analyze the elbow. The load-displacement correlation was quite good using this mesh, but the strain reconciliation was not. Analysis of the FEA results indicated that the axial and hoop strain gradients across the mid-section of the elbow were very high. In order to generate better strain correlations, the elbow mesh was refined in the mid-section of the elbow to include 48 elements per ring and an additional six rings, effectively increasing the element density by nine times. Using the refined mesh produced much better correlations with the strain data.

Onvex Partitioning Approach for the Construction of Solid Model From Measured Point Data

1998 ◽  
Author(s):  
V. Devaraja Holla ◽  
S. S. Krishnan ◽  
B. Gurumoorthy
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Solid Model ◽  
Planar Surface ◽  
Element Analysis ◽  
Final Model ◽  
Convex Partition ◽  
Point Data ◽  
Definition Of ◽  
The Individual

Abstract This paper describes an algorithm for the construction of solid model from measured point data using Convex Partitioning approach. Convex Partitioning approach is based on the idea that any non-convex body can be viewed as a combination of several convex pieces. The input constitutes a set or cluster of points, measured on each face of the object, which is obtained by scanning the part. Points in each cluster are used to fit a plane or a non-planar surface depending upon the type of face. Partitioning is done along the planes till one gets all the convex pieces. The individual convex pieces are then combined together to get the final model of the object. The definition of convex partition is relaxed for objects having curved faces, to be an object with all its edges convex. Apart from allowing the construction of solid model from measured point data, the output (convex pieces) obtained from this approach is useful in planning for rapid prototyping and feature suppression in finite element analysis.

Analysis of the Pitting Corrosion’s Effect on the Residual Strength of Submerged Pressure Shell

2019 ◽  
Author(s):  
Weijun Xu ◽  
Tianyi Chen ◽  
Chenfeng Li ◽  
Xueqian Zhou ◽  
Feng Liu
Keyword(s):  
Finite Element ◽  
Pitting Corrosion ◽  
Residual Strength ◽  
Complex Structure ◽  
Element Model ◽  
Element Analysis ◽  
Influence Coefficients ◽  
The Finite Element Analysis ◽  
Corrosion Pit ◽  
Pit Depth

Abstract Submerged pressure shell’s corrosion situation is more serious due to bad work environment, complex structure and difficulty of maintenance. Based on the analysis of calculation method of submerged pressure shell structures with non-corrosion, the calculation formula of pressure shell with pitting corrosion is given. The Finite Element Model is constructed and its residual strength is investigated. The relationships between shell stress and some parameters, such as radius of corrosion pit, depth of corrosion pit and location of corrosion pit are studied. Based on the finite element analysis results, the effect of radius of corrosion pit on the stress of pressure shell with pitting corrosion is analyzed. Furthermore, the influence coefficients of residual strength of pressure shell due to depth and location of pitting corrosion are determined, which provide a reference for the strength evaluation of submerged pressure shell with pitting corrosion.

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