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BDA40303

Task Report No. 3

COMPOSITE PLATE

Nurul Raihan Binti Shahizan

DD110030

November 11, 2014

1. Model/Problem Description

The investigation to find the best fiber orientation configuration of composite

structure with reinforced fiber is applied by LISA. Along edge BC is applied with the

load of 10N at z direction and fixed edge at AD.

I. Find the best configuration for longitudinal loading

II. Find the best configuration for bending loading

The configuration of the fiber orientation is listed in table below:-

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2. Finite Element Model

2.1 Element Model

The composite plate structure is modelled as three dimensional. The total

number of nodes is 55. A material sample of thin structure (1.2mm thickness) consist

of three layers. All layers are made of the same matrix with different fiber orientation.

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3. Force

For line AD, all node must be restrained with displx=0, disply=0, displz=0, rotx=0,

roty=0, rotz=0. For line BC, all nodes along that line (2, 53, 54, 55 and 3) be applied with

1000N of load at x-direction (forcex) and 10N at z direction (forcez). Table below shows the

loading condition :-

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4. Results and Discusssion

Each configuration has 2 load cases and the total of configuration is 4. Refer to the

magnitude displacement of the longitudinal loading, it is clearly shows that the free end will

be most longitudinal loading. The place that be applied with concentrated load, the largest

displacement occur. It happens at the tip. During the longitudinal loading as indicated by

force in x-axis, the maximum displacement magnitude occurs. This region is highly stress, as

a consequence the stress contour shows higher compared to other region. The longitudinal

loading concentration is the highest. Highest longitudinal loading concentration archived.

Other than this area, the area around the concentrated load is also high stressed. It can be

understood since the load is applied in this point.

4.1 Configuration A (0,0,0)

1) Loadcase 1

The largest displacement and the highest longitudinal loading concentration

is 10.48

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2) Load case 2

The largest displacement and the highest longitudinal loading concentration

is 10.44

4.2 Configuration B (90,90,90)

3) Loadcase 1

The largest displacement and the highest longitudinal loading concentration

is 15.03

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4) Loadcase 2

The largest displacement and the highest longitudinal loading concentrationis 14.95

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4.3 Configuration C (0,45,0)

5)Loadcase 1

The largest displacement and the highest longitudinal loading concentration

is 10.33

6)Loadcase 2

The largest displacement and the highest longitudinal loading concentration

is 10.3

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4.4 Congifuration D (45,0,45)

7)Loadcase 1

The largest displacement and the highest longitudinal loading concentration

is 9.705

8)Loadcase 2

The largest displacement and the highest longitudinal loading concentration

is 9.675

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5. Conclusion

Based on this simulation result, there are some results can be derived:

I. The largest displacement is at the tip where a concentrated load is applied

II. The largest displacement and the highest stress at configuration B (90,90,90)

III. The displacement is 15.03397

IV. The longitudinal loading concentration is the highest 15.03397

V. The von misses stress at maximum point is 3745.82, the lowest stress between

other configurations.