Copy of QUIZ #4

Copy of QUIZ #4

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Question 1 of 7

1. Question
We want to read the displacements of a node from the results file.

Which is the key that we must read?
- 101
- 2101
- 8
- 2001
Correct

Incorrect
Question 2 of 7

2. Question
We want to export the total elastic strain energy of the whole model to the results file.

What do we have to add into the input file? Tip
- ```
*EL FILE

 ALLSE
```
- ```
*ENERGY FILE
```
- ```
*EL FILE, TOTAL

 ALLSE
```
- ```
*ENERGY FILE

 ALLSE
```
Correct

Incorrect
Question 3 of 7

3. Question
If we want to read the vertical reaction force in a node.

Where can we find that value using the URDFIL subroutine after calling DBFILE?
- ```
ARRAY(4)
```
- ```
JRRAY(1,4)
```
- ```
ARRAY(1,4)
```
- ```
JRRAY(4)
```
Correct

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Question 4 of 7

4. Question

We have the following lines of Fortran code:

      INTEGER A(4), B(4), C(8) 
      EQUIVALENCE (A(1), C(1)), (B(3), C(2))
      DO 100, I = 1, 8
        C(I) = I + 2
100   CONTINUE

What is the result of the following print statement?

PRINT*, A(4), B(4)

```
   6   5
```
```
   5   6
```
```
   5   5
```
```
   6   6
```

Correct

Incorrect

Question 5 of 7

5. Question
In lesson 2.8, at 4:05 in the log file we can see some values in the row of integers that apparently don’t make sense: “141185694”, “1750990848”. What do they represent?
- Non-sense values (trash).
- They represent memory addresses.
- They are other types of data (not integers)
- Those values are right, they do make sense
Correct

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Question 6 of 7

6. Question
What happens if we don’t call the POSFIL subroutine before DBFILE?
- The DBFILE subroutine will fail and will return JRCD = 1 immediately
- The DBFILE subroutine will start reading the results file from the very beginning of the file
Correct

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Question 7 of 7

7. Question
Modify the URDFIL subroutine from lesson 2.8:
- Comment out the POSFIL call
- Uncomment the print statements of KEY, ARRAY and JRRAY
- Set LSTOP = 1 in the first increment
Run the job and check the log file. What happens?
- The DBFILE subroutine did not work, and no record was printed out
- The DBFILE read all the results inside the results file, including data written before the first increment
- The DBFILE read all the results from the first increment
- The URDFIL failed when it was executed, and the job aborted
Correct

Incorrect

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