Finite Element Analysis and Design Improvement for Ends Warping of Refrigerator Door

2010 ◽  
Vol 129-131 ◽  
pp. 1257-1261
Author(s):  
Zhi Wei Wang ◽  
Ling Qin Meng ◽  
Yan Qin Li ◽  
Yong Gao Li ◽  
De Hai Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Geometric Model ◽  
Element Model ◽  
Element Analysis ◽  
Analysis And Design ◽  
Design Improvement ◽  
Production Practice ◽  
Long Time ◽  
The Given

Facing the ends warping of refrigerators door, a refrigerator door is simulated using finite element theory and ANSYS software. The enclosed of finite element model and geometric model are established to conduct computing. The results show that simulated values of end warping are significantly greater than the given value of company technique standard. Several structural design schemes are proposed on the basis of production practice and theory analysis. The only one scheme of design improvement is chosen to compute using ANSYS, the results show the values of warping ends are significantly reduced and can meet the production requirements. The reasonable of finite element analysis is proven effectively through long time production.

Analysis and design of laterally unsupported portal frames for out-of-plane stability

2004 ◽  
Vol 31 (3) ◽  
pp. 440-452 ◽  
Author(s):  
Ilian Zinoviev ◽  
Magdi Mohareb
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Potential Energy ◽  
Finite Element Model ◽  
Element Model ◽  
Element Analysis ◽  
Analysis And Design ◽  
Axial Forces ◽  
Eigen Value ◽  
Out Of Plane

A methodology for the analysis and design of laterally unsupported portal frames is proposed. A finite element model is developed to predict the elastic critical load and associated buckling mode. Regression analysis is then conducted to find lateral displacement and rotation field expressions that closely approximate the buckled configurations predicted by the finite element analysis. The obtained functions are then substituted into the total potential energy expression, and the stationarity conditions are evoked. The resulting eigen-value problem is solved for the out-of-plane buckling loads that are then compared with those based on the finite element model. The agreement between the two solutions provides an indication of the accuracy of the simplified energy solution. The member destabilizing effects induced by axial forces are separated from those induced by strong axis bending. The separation of these two effects is subsequently exploited in a two-step eigen-value procedure, aimed at determining the key member resistances defined in the interaction check of the standard CSA-S16-01, while accurately modeling the boundary conditions of the member. These are (i) compressive resistance of the member in the absence of bending effects and (ii) flexural resistance of the member in the absence of axial force effects.Key words: portal frames, lateral buckling, finite element analysis, wide flange sections, frame design, principle of stationary potential energy.

Finite element analysis and design of cold-formed steel built-up closed columns with flange and web intermediate stiffeners

2020 ◽  
Vol 47 (10) ◽  
pp. 1175-1187
Author(s):  
G. Aruna ◽  
V. Karthika ◽  
S. Sukumar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Parametric Study ◽  
Steel Structures ◽  
Element Model ◽  
Distortional Buckling ◽  
Element Analysis ◽  
Analysis And Design ◽  
The North ◽  
Cold Formed Steel

This paper describes a finite element analysis (FEA) and design of cold-formed steel built-up closed sections with intermediate stiffeners in the flange and web under axial compression. A finite element model (FEM) was developed and validated using the available experimental results. The validated FEM can be used for further parametric study on strength of built-up closed columns. The results obtained from the parametric study are compared with the current direct strength method (DSM) in the North American specification of cold-formed steel structures for those specimens that failed by only local, distortional, and flexural buckling. It is shown that the current DSM is not quite suitable for the design of cold-formed steel built-up closed columns. Therefore, the improved design equations are proposed by modifying the current design equations used in the DSM for flexural, local, and distortional buckling. The reliability of current DSM and proposed DSM was assessed by reliability analysis.

Air Compressor Piston Finite Element Analysis Based on ANSYS

2015 ◽  
Vol 713-715 ◽  
pp. 15-17
Author(s):  
Xin Xiang Zhou ◽  
Tian Shu Cong ◽  
Xing Long Lei ◽  
Feng Zhen Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Load ◽  
Geometric Model ◽  
Three Dimensional ◽  
Reference Value ◽  
Element Model ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Air Compressor

The finite element analysis was carried out on the piston of WWD - 0.8/10 type air compressor under the action of mechanical load stress and deformation.Using three-dimensional modeling software Solidworks to establish a simplified geometric model of piston in air compressor ,Transform the model built in the three dimensional finite element analysis software into the finite element model for analysis,Determine the method of the piston by the mechanical load and boundary conditions,Completed the stress analysis and deformation analysis of the piston under the mechanical load ,The results of analysis of the piston design optimization has important reference value.

Nonlinear Finite Element Analysis of Steel Frame with Semi-Rigid Connections

2012 ◽  
Vol 226-228 ◽  
pp. 1199-1202
Author(s):  
Guo Hua Li ◽  
Cheng Zhi Qi ◽  
Jian Luo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Finite Element Analysis ◽  
Element Model ◽  
Beam Element ◽  
Steel Frame ◽  
Nonlinear Finite Element ◽  
Element Analysis ◽  
Analysis And Design ◽  
Rigid Joints

In conventional analysis and design, the beam-column connections are divided into two categories: fully rigid joints and perfectly pinned joints. Actually, most beam-column connections exhibit flexibility. Idealized connections may diverge from the real reaction of structures. This article presents a hybrid finite-element model that consists of a beam element with two semi-rigid connections at the ends for studying the effect of the flexibility on the structures. Based on the theory of finite deformation, the first-order and the second-order stiffness matrix and the equilibrium equation of hybrid beam element were got. A nonlinear finite element analysis program was developed to analysis the steel frames with semi-rigid connections. At last, one-bay, two-story semi-rigid planar steel frame was analyzed using the program, and some conclusions about the effect of semi-rigid connections flexibility were obtained.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

scholarly journals Comparison of Tooth- and Bone-Borne Appliances on the Stress Distributions and Displacement Patterns in the Facial Skeleton in Surgically Assisted Rapid Maxillary Expansion—A Finite Element Analysis (FEA) Study

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1152
Author(s):  
Rafał Nowak ◽  
Anna Olejnik ◽  
Hanna Gerber ◽  
Roman Frątczak ◽  
Ewa Zawiślak
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Rapid Maxillary Expansion ◽  
Stress Distributions ◽  
Maxillary Expansion ◽  
Facial Skeleton ◽  
Element Analysis ◽  
Maxillary Constriction

The aim of this study was to compare the reduced stresses according to Huber’s hypothesis and the displacement pattern in the region of the facial skeleton using a tooth- or bone-borne appliance in surgically assisted rapid maxillary expansion (SARME). In the current literature, the lack of updated reports about biomechanical effects in bone-borne appliances used in SARME is noticeable. Finite element analysis (FEA) was used for this study. Six facial skeleton models were created, five with various variants of osteotomy and one without osteotomy. Two different appliances for maxillary expansion were used for each model. The three-dimensional (3D) model of the facial skeleton was created on the basis of spiral computed tomography (CT) scans of a 32-year-old patient with maxillary constriction. The finite element model was built using ANSYS 15.0 software, in which the computations were carried out. Stress distributions and displacement values along the 3D axes were found for each osteotomy variant with the expansion of the tooth- and the bone-borne devices at a level of 0.5 mm. The investigation showed that in the case of a full osteotomy of the maxilla, as described by Bell and Epker in 1976, the method of fixing the appliance for maxillary expansion had no impact on the distribution of the reduced stresses according to Huber’s hypothesis in the facial skeleton. In the case of the bone-borne appliance, the load on the teeth, which may lead to periodontal and orthodontic complications, was eliminated. In the case of a full osteotomy of the maxilla, displacements in the buccolingual direction for all the variables of the bone-borne appliance were slightly bigger than for the tooth-borne appliance.

Study of material selection and design improvement for a portable blender by using finite element analysis

2021 ◽  
Author(s):  
R. M. Farizuan ◽  
A. R. Irfan ◽  
H. Radhwan ◽  
Shafeeq Ahmad Shamim Ahmad ◽  
Khoo Kin Fai ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Material Selection ◽  
Element Analysis ◽  
Design Improvement

Finite Element Analysis and Optimization of Long-Span Gantry NC Machining Center Structure

2011 ◽  
Vol 346 ◽  
pp. 379-384
Author(s):  
Shu Bo Xu ◽  
Yang Xi ◽  
Cai Nian Jing ◽  
Ke Ke Sun
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Method ◽  
Dynamic Performance ◽  
Plate Thickness ◽  
Element Model ◽  
Wall Structure ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Dynamic Performance Analysis

The use of finite element theory and modal analysis theory, the structure of the machine static and dynamic performance analysis and prediction using optimal design method for optimization, the new machine to improve job performance, improve processing accuracy, shorten the development cycle and enhance the competitiveness of products is very important. Selected for three-dimensional CAD modeling software-UG NX4.0 and finite element analysis software-ANSYS to set up the structure of the beam finite element model, and then post on the overall structure of the static and dynamic characteristic analysis, on the basis of optimized static and dynamic performance is more superior double wall structure of the beam. And by changing the wall thickness and the thickness of the inner wall, as well as the reinforcement plate thickness overall sensitivity analysis shows that changes in these three parameters on the dynamic characteristics of post impact. Application of topology optimization methods, determine the optimal structure of the beam ultimately.

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