applications of fem
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Applications of Finite ElementMethods
FINITE ELEMENT METHOD
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Why FEM?
Systematic procedure for derivation or approximation of solutions.
Although tedious, but is very efficient with the advent of computers.
Has extensive applications in several types of problems in engineering,
medical science, nuclear science, aeronautics and aerospace.
FEM allows entire designs to be constructed, refined, and optimizedbefore the design is manufactured.
Instantaneous analysis results are obtained and there is no need to test
the prototype.
FEM allows detailed visualization of where structures bend or twist, and
indicates the distribution of stresses and displacements.
In summary, benefits of FEM include increased accuracy, enhanced design
and better insight into critical design parameters, virtual prototyping,
fewer hardware prototypes, a faster and less expensive design cycle,
increased productivity, and increased revenue.
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The Use of Finite Element
Method in Furniture Industry
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Book Shelf Material and Modelling
Elasticity module : 28733kg/cm^2 for 18mm
Bending strength : 291.2kg/cm^2 Compressive strength: 104.6kg/cm^2
(Parallel to the surface)
Board density : 0.662g/cm^3
Shearing module : 14363kg/cm^2
In finite elements method, thefollowing
steps are taken for the
performance of the static
analysis:
i.) Drawing the model.ii.) Assigning material to the
part.
iii.) Applying the limit
conditions.
iv.) Applying the loads.v.) Building a mesh for the part
vi.) Starting the static analysis
vii.) Determining the safety
factor dispersion
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Sample Analysis
Parameters Values 1 Values 2
M 12.52kg 20kg
L 36cm
b 7.5cm
D 1.8cm
E 28733kg/cm^2
0.1162cm 0.1856cm
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Analysis of complete Book Shelf
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Conclusions and Suggestions
The wood, however, displays a specific behavior
with its heterogeneous and anisotropic structure
and therefore it is needed to develop special
coefficients suitable to wood or virtual resistancevalues with another approach.
The resistance values determined under Cosmos
Works can be used in the design of new furniture
and creating the construction without any need forsafety tension.
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The Use of Finite Element
Method in Blanking
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Blanking
Metal blanking is a widely used
process in high volume
production of metal components.
Its applications range from
components of very light to heavy
appliances and machineries.
Blanking is defined as the cutting
of a work piece between two die
components to a predetermined
contour.
The theoretical modeling is very
difficult due to the complexity in
describing the shearing process
starting with the elastic stage and
ending with the total separation
of the sheet metal.
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Methodology for Analysis
Finite Element Method (FEM) and Design of
Experiments (DOE) techniques are used to achieve
the study objectives.
Classify the blanking parameters into controllable anduncountable.
Finite Element Simulation.
Model Verification. Blanking Process Modeling.
Validation.
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Punching of Stainless Steel Analysis
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Conclusions and Suggestions
The developed experimental investigation of the sheetmetal blanking process makes it possible to study theeffects of process parameters such as the material type, thepunch-die clearance, the thickness of the sheet and theblank holder force and their interactions on the geometry
of the sheared edge especially the burrs height. The finite element and design of experiments methods are
used in order to obtain a better understanding of theblanking manufacturing response.
The process signatures indicate that the material types aswell as the geometric characteristics of the tools and theirconfiguration influence the burrs height of the shearededge
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References
Full length research paper by K. Hseyin Ko,
Koray Kizilkaya, E. Seda Erdinler and Derya
Sevim Korkut. on Use of FEM in Furniture
industry.
Application of Finite Element Method and
Design of Experiments in the Optimization of
Sheet Metal Blanking Process by Emad Al-Momani, Ibrahim Rawabdeh