Finite Element Simulation of Formed Steel Components

2014 ◽  
Vol 622-623 ◽  
pp. 632-642
Author(s):  
Stephen Akinlabi ◽  
Francesco Pietra ◽  
Esther Titilayo Akinlabi
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Thermal Stresses ◽  
Geometrical Shape ◽  
Element Analysis ◽  
Steel Sheets ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Mechanical Press ◽  
Commercial Package

Forming is a manufacturing process by which the geometrical shape and size of sheet and plate metals are changed by means of either an external force using mechanical presses and dies or induced thermal stresses by external heat. This study reports on the finite element analysis of mechanically formed steel components using the ANSYS commercial package version 14.5. The samples of the steel sheets were mechanically formed to about 120 mm curvatures using a 20 ton capacity eccentric mechanical press at room temperature. The results showed that the steel samples were successfully formed to the curvature of about 120 mm and the finite element modelled results confirmed the experimental measured curvature. Key words: Forming, Mechanical presses, Finite Element Simulation and Sheets.

Research on Finite Element Simulation and Test of Two-Pass Deep Drawing Forming for Conical Parts

2013 ◽  
Vol 652-654 ◽  
pp. 1966-1970
Author(s):  
Zhi Ren Han ◽  
Ze Bing Yuan
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Deep Drawing ◽  
Forming Limit Diagram ◽  
Forming Limit ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Deep Drawing Test ◽  
As Stress

This paper is focus on two-Pass Deep Drawing Forming of conical axisymmetric parts, study on the finite element simulation and test of multi-Pass deep drawing part. It carry on the finite element analysis and calculation using the ANSYS/LS-DYNA software platform, analyzing the simulation results such as stress , strain distribution and formability by post-processing LSPOST software. It was done multi-Pass deep drawing test using a set of combined type mould. Based on the multi-Pass forming test by using a set of combined type mould, comparison of simulation and test data can be obtained through the forming limit diagram. The result of simulation and test is basically the same and both reflect the formability.

Finite Element Simulation and Experimental Analysis of O-P Hardness

2014 ◽  
Vol 1033-1034 ◽  
pp. 462-465
Author(s):  
Yong Huang ◽  
De Jun Ma ◽  
W. Chen ◽  
Jia Liang Wang ◽  
Liang Sun
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Method ◽  
Indentation Hardness ◽  
Element Analysis ◽  
Simulation Techniques ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Finite Element Numerical Simulation

Based on the finite element analysis method to simulate the O-P hardness. Taking S45C steel as an example, comparative analysis of O-P hardness of finite element simulation and O-P hardness of instrument indentation hardness experiment, results show that difference of S45C steel’s O-P hardness between the finite element simulation and real experiment is-2.62% Accordingly seen, O-P hardness can be obtained by finite element numerical simulation method, it’s a possible way to study relations between O-P hardness and Vickers hardness based on finite element numerical simulation techniques.

Finite Element Simulation of Stable Fatigue Crack Growth Using Critical CTOD Determined by Preliminary Finite Element Analysis

2014 ◽  
Vol 891-892 ◽  
pp. 1675-1680
Author(s):  
Seok Jae Chu ◽  
Cong Hao Liu
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Finite Element Simulation ◽  
Crack Growth ◽  
Crack Tip ◽  
Stress Intensity Factor Range ◽  
Crack Tip Opening Displacement ◽  
Element Analysis ◽  
Element Simulation

Finite element simulation of stable fatigue crack growth using critical crack tip opening displacement (CTOD) was done. In the preliminary finite element simulation without crack growth, the critical CTOD was determined by monitoring the ratio between the displacement increments at the nodes above the crack tip and behind the crack tip in the neighborhood of the crack tip. The critical CTOD was determined as the vertical displacement at the node on the crack surface just behind the crack tip at the maximum ratio. In the main finite element simulation with crack growth, the crack growth rate with respect to the effective stress intensity factor range considering crack closure yielded more consistent result. The exponents m in the Paris law were determined.

Finite Element Analysis of Thermal Stresses in Circumferential Cast Clasps of Removable Partial Dentures

2007 ◽  
Vol 23 ◽  
pp. 229-232
Author(s):  
Liliana Sandu ◽  
Nicolae Faur ◽  
Cristina Bortun ◽  
Sorin Porojan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Stresses ◽  
Element Analysis ◽  
3 Dimensional ◽  
Thermal Changes ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Back Action ◽  
Aggressive Effect

Several studies evaluated the removable partial dentures by the finite element analysis, but none of them evaluated thermal stresses. The purpose of the study was to explore the influence of thermal oral changes induced by hot/cold liquids and food on the circumferential cast clasps of removable partial dentures. A 3-dimensional finite element method was used to explore the temperature distribution, thermal stress and the influence of thermal changes on stresses and displacements of circumferential clasps during functions. Thermal variations induce stresses in dental clasps, high temperatures having a more aggressive effect than lower one. Cold liquids and food induce high stresses in the retentive clasp arms while hot ones in the occlusal rests of the clasps and for the back action clasp also in the minor connector. The study suggests the importance of consFigureidering thermal variations for stress analyses of the cast clasps.

scholarly journals Strength Training Characteristics of Different Loads Based on Acceleration Sensor and Finite Element Simulation

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 647
Author(s):  
Bo Pang ◽  
Zhongqiu Ji ◽  
Zihua Zhang ◽  
Yunchuan Sun ◽  
Chunmin Ma ◽  
...  
Keyword(s):  
Finite Element ◽  
Knee Joint ◽  
Evaluation System ◽  
Bench Press ◽  
Element Analysis ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Intensity Of Exercise ◽  
Deep Squat ◽  
Main Factor

Deep squat, bench press and hard pull are important ways for people to improve their strength. The use of sensors to measure force is rare. Measuring strength with sensors is extremely valuable for people to master the intensity of exercise to scientifically effective exercise. To this end, in this paper, we used a real-time wireless motion capture and mechanical evaluation system of the wearable sensor to measure the dynamic characteristics of 30 young men performing deep squat, bench press and hard pull maneuvers. The data of tibia were simulated with AnyBody 5.2 and ANSYS 19.2 to verify the authenticity. The result demonstrated that the appropriate force of the deep squat elbow joint, the hip joint and the knee joint is 40% 1RM, the appropriate force of the bench press is 40% 1RM and the appropriate force of the hard pull is 80% 1RM. The external force is the main factor of bone change. The mechanical characteristics of knee joint can be simulated after the Finite Element Analysis and the simulation of AnyBody model are verified.

Thermal stresses in multilevel interconnections: Aluminum lines at different levels

1997 ◽  
Vol 12 (9) ◽  
pp. 2219-2222 ◽  
Author(s):  
Y-L. Shen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Stresses ◽  
Element Analysis ◽  
Future Studies ◽  
Level Lines ◽  
The Finite Element Analysis ◽  
Staggered Arrangement ◽  
Upper Level ◽  
Different Levels

Numerical results on the evolution of thermal stresses in multilevel interconnects are presented. Two levels of aluminum lines with an aspect ratio of unity, aligned vertically or arranged in a staggered manner, are considered by recourse to the finite element analysis. The stresses are found to be significantly higher in the lower-level lines than in the upper-level lines, for both the aligned and staggered arrangements. The stress magnitudes are generally smaller in lines of staggered arrangement, compared to the case of aligned lines. Implications of the present findings are discussed, with directions of future studies highlighted.

Investigation of Corner Cavity Formation During Backward Cup Extrusion Process Using Finite Element Method

2009 ◽  
Author(s):  
Arash Khajeh ◽  
Ramin Ebrahimi ◽  
Mohammad Mohsen Moshksar
Keyword(s):  
Finite Element ◽  
Extrusion Process ◽  
Critical Value ◽  
Cavity Formation ◽  
Element Analysis ◽  
Temporal Prediction ◽  
Element Simulation ◽  
The Finite Element Analysis ◽  
Considerable Impact ◽  
Reduction Of Area

This study focuses on the finite element analysis of the formation of corner cavity defect during the Backward Cup Extrusion (BCE) process. In the final stage of this process, when the bottom thickness reaches to a critical value this defect will be appear as a circumferential defect in the corner of the cup. In addition, this research examines the temporal prediction of onset of corner cavity formation in the various amounts of the reduction of areas. The finite element simulation results were compared with those of the experimental, indicating that the amount of the reduction of area and that of the friction coefficient have considerable impact on the onset of corner cavity formation during the BCE process.

scholarly journals EXPERIMENTAL AND FINITE ELEMENT ANALYSIS OF NONAXISYMMETRIC STRETCH FLANGING PROCESS USING AA 5052

2021 ◽  
Author(s):  
Sachin Kumar Nikam ◽  
◽  
Sandeep Jaiswal ◽  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Sheet Metal ◽  
Element Analysis ◽  
Maximum Percentage ◽  
Element Simulation ◽  
Stretch Flanging ◽  
Explicit Dynamic ◽  
Mesh Convergence

This paper deals with experimental and finite element analysis of the stretch flanging process using AA- 5052 sheets of 0.5 mm thick. A parametrical study has been done through finite element simulation to inspect the influence of procedural parametrical properties on maximum thinning (%) within the stretch flanging process. The influence of preliminary flange length of sheet metal blank, punch die clearance, and width was examined on the maximum thinning (%). An explicit dynamic finite element method was utilized using the finite element commercial package ABAQUS. Strain measurement was done after conducting stretch flanging tests. A Mesh convergence examination was carried out to ascertain the maximum percentage accuracy in FEM model. It is found through finite element simulation that the width of sheet metal blanks has a greater impact on the maximum percentage of thinning as compared to preliminary flange length, and clearance of the punch dies.

Finite Element Simulation and Experimental Research on Micro-Milling Process of Titanium Alloy

2012 ◽  
Vol 522 ◽  
pp. 245-248 ◽  
Author(s):  
Hai Tao Liu ◽  
Ya Zhou Sun ◽  
De Bin Shan ◽  
Yan Quan Geng
Keyword(s):  
Finite Element ◽  
Titanium Alloy ◽  
Finite Element Simulation ◽  
Large Scale ◽  
Simulation Analysis ◽  
Cutting Speed ◽  
Micro Milling ◽  
Element Analysis ◽  
Element Simulation ◽  
Cutting Heat

There are lots of titanium alloy parts which have large-scale micro-structures in astronautic structure and medical implants, so the micro milling becomes one of the effective processing methods in getting the surface micro-structure. Because the titanium alloy has high caking property in processing, it needs a research on the cutting heat and force in order to get better machining precision and surface quality. According to the finite element theory in elastic and plasticity, the influence of cutting speed to the cutting heat and force is got by finite element simulation analysis to the titanium material TC4 in cutting process. It can get the simulation results of cutting heat and force in the micro milling processing by finite element analysis, and then compared, the basic influence which the cutting speed to the cutting heat and force is got. The correctness of the result is checked through cutting experiments.

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