MAE 489 MIDTERM EXAM LATEST UPDATED
User redable output file of Nastran: - ANSWER .f06
Command to remove an object from displaying: - ANSWER erase
Output file from Patran: - ANSWER .bdf
Command to get rid of duplicate nodes: - ANSWER equivalence
Input file to Nastran - ANSWER .bdf
"nodes" are labeled as grid points in this output file: - ANSWER .f06
For 2-D elements, this dimension is applied under "properties". -
ANSWER thickness
Input file to Patran, for post-proccessing: - ANSWER .xdb
What is the weight to mass conversion value for US units? (Numerical
Answer) - ANSWER 0.00259
The first output calculation in the process of generating a FEA (whether
by hand or Nastran) is: - ANSWER Deflection
More than one type of element can NOT be used in a FEM - ANSWER
False
When using which dimention of elements in modeling in Patran is it NOT
a good idea to apply "loads and/or boundary conditions" to geometry? -
ANSWER 1D
The Finite Element Method uses the stiffness or displacement
technique. - ANSWER True
(fill in the blank)
, The basic concept of the finite element appriach is that the real structure
can be divided or ____________ by a finite number of elements. -
ANSWER discretized
A1 = 30
A2 = 15
E1 = 5000
E2 = 3000
L1 = 20
L2 = 30
P = 5000
Show the actual number that would be in the first column in the two
individual elemental stiffness matrices of elements 1 and 2 for a hand
FEA.
(NOT symbols, and NOT formulas - show actual numbers that would be
in the computer) - ANSWER for elemnt 1 = 7500
for elemnt 2 = 1500
Show the actual number that would be in position 2nd row and 2nd
column in the "global" stiffness matrix. [K] (do not reduce matrix due to
boundary conditions.) - ANSWER 9.000
Show the actual number that would be in position 3rd row and 3rd
column in the "global" stiffness matrix. [K] (do not reduce matrix due to
boundary conditions.) - ANSWER 1.500
How many numbers are in the required force matrix. [f] (do not reduce it
due to boundary conditions.) - ANSWER 3
#19-23
Given the following problem for an axially loaded bar (shown below) to
be solved by a 1-D element hand FEA, answer the questions.
F1 = 500
F3 = 300
P1 = 400
P2 = 500
User redable output file of Nastran: - ANSWER .f06
Command to remove an object from displaying: - ANSWER erase
Output file from Patran: - ANSWER .bdf
Command to get rid of duplicate nodes: - ANSWER equivalence
Input file to Nastran - ANSWER .bdf
"nodes" are labeled as grid points in this output file: - ANSWER .f06
For 2-D elements, this dimension is applied under "properties". -
ANSWER thickness
Input file to Patran, for post-proccessing: - ANSWER .xdb
What is the weight to mass conversion value for US units? (Numerical
Answer) - ANSWER 0.00259
The first output calculation in the process of generating a FEA (whether
by hand or Nastran) is: - ANSWER Deflection
More than one type of element can NOT be used in a FEM - ANSWER
False
When using which dimention of elements in modeling in Patran is it NOT
a good idea to apply "loads and/or boundary conditions" to geometry? -
ANSWER 1D
The Finite Element Method uses the stiffness or displacement
technique. - ANSWER True
(fill in the blank)
, The basic concept of the finite element appriach is that the real structure
can be divided or ____________ by a finite number of elements. -
ANSWER discretized
A1 = 30
A2 = 15
E1 = 5000
E2 = 3000
L1 = 20
L2 = 30
P = 5000
Show the actual number that would be in the first column in the two
individual elemental stiffness matrices of elements 1 and 2 for a hand
FEA.
(NOT symbols, and NOT formulas - show actual numbers that would be
in the computer) - ANSWER for elemnt 1 = 7500
for elemnt 2 = 1500
Show the actual number that would be in position 2nd row and 2nd
column in the "global" stiffness matrix. [K] (do not reduce matrix due to
boundary conditions.) - ANSWER 9.000
Show the actual number that would be in position 3rd row and 3rd
column in the "global" stiffness matrix. [K] (do not reduce matrix due to
boundary conditions.) - ANSWER 1.500
How many numbers are in the required force matrix. [f] (do not reduce it
due to boundary conditions.) - ANSWER 3
#19-23
Given the following problem for an axially loaded bar (shown below) to
be solved by a 1-D element hand FEA, answer the questions.
F1 = 500
F3 = 300
P1 = 400
P2 = 500
