Weekly Report Sept. 19th-Sept. 23rd

Federico ViscarraSept. 23rd , 2011

Davila research group

2

Diatoms

• Amorphous silica shell• Micro body nano pores• Fragilariopsis Kerguelensis• Hamm et. al.

3

Goals for the Week

• Run tests on COMSOL v4.2• Display results in more organized fashion

4

Results

• Ran test on all models• Created graphs of:– Von Mises Stress (VMS) vs. Diameter– VMS vs. # of pores– Displacement vs. Diameter– Displacement vs. # of pores

5

SimulationsModel # of runs Von Mises Stress (Pa)

Base 5 1.9521E9

Centric 2D 5 1.8895E9

Centric 3D 5 1.0069E9

Centric 4D 5 4.4311E9

Horizontal 2D 5 1.6659E9

Horizontal 3D 5 2.7245E9

Horizontal 4D 5 7.7899E10

Vertical 3 pores 2D 5 4.918E9

Vertical 3 pores 3D 5 4.999E9

Vertical 3 pores 4D 5 1.4047E10

Vertical 5 pores 2D 5 4.7875E9

Vertical 5 pores 3D 5 2.4692E10

Vertical 5 pores 4D 5 7.756E9

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VMS vs. Diameter

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.450.00E+00

1.00E+10

2.00E+10

3.00E+10

4.00E+10

5.00E+10

6.00E+10

7.00E+10

8.00E+10

9.00E+10

VMS vs Diameter

BaseCentricHorizontalVertical 5PVertical 3PRadial 2.7Radial 1.8Yield Stress

diameter (microns)

VMS

(micr

ons)

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VMS vs. # of pores

0 1 2 3 4 5 60.00E+00

1.00E+10

2.00E+10

3.00E+10

4.00E+10

5.00E+10

6.00E+10

7.00E+10

8.00E+10

9.00E+10

VMS vs. # of Pores

BaseCentricHorizontalV5PV3P27R18R

# of Pores

VMS

(micr

ons)

8

Displacement vs. Diameter

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.450.00E+00

1.00E-05

2.00E-05

3.00E-05

4.00E-05

5.00E-05

6.00E-05

Displacement vs. Diameter

BaseCentricHorizontalR27R18V3PV5PYield Stress

Diameter (microns)

Disp

lace

men

t (m

icron

s)

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Displacement vs. # of pores

0 1 2 3 4 5 60.00E+00

5.00E-08

1.00E-07

1.50E-07

2.00E-07

2.50E-07

3.00E-07

3.50E-07

Displacement vs. # of pores

BaseCentricHorizontalR27R18V3PV5P

10

Thank youAny questions or comments?