Applications of FEM

7/30/2019 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

Documents

Applications of FEM