VM-NR1677-01-7

VM-NR1677-01-7
NUREG/CR-1677: Volume 1, Benchmark Problem No. 7

Overview

Reference:P.Bezler, M. Hartzman & M. Reich, Dynamic Analysis of Uniform Support Motion Response Spectrum Method, (NUREG/CR-1677), Brookhaven National Laboratory, August 1980, Problem 1, Pages 328-402
Analysis Type(s):
Modal analysis (ANTYPE = 2)
Spectral analysis (ANTYPE = 8)
Element Type(s):
3D 3-Node pipe (PIPE289)
3D 3-Node elbow (ELBOW290)
Mass element (MASS21)
Input Listing:

Test Case

For test case description, problem sketch, material properties, geometry properties and loadings refer to

VM-NR1677-01-7-a

Results Comparison

Table 113: Frequencies Obtained from Modal Solution

ModeFrequency
15.264
28.003
38.382
49.272
59.518
610.100
713.754
815.278
915.374
1017.931
1119.060
1223.292
1325.599
1426.055
1527.514
1628.968
1730.846
1835.705
1937.484
2044.113
2144.678
2248.567

Table 114: Maximum Displacements and Rotations Obtained from Spectrum Solve

Result_NodeValue
UX at node85.467E-2
UY at node80.206
UZ at node110.194
ROTX at node74.738E-3
ROTY at node141.145E-3
ROTZ at node509.815E-5

Table 115: Element Forces and Moments obtained from Spectrum Solve

ResultMAPDL
Element 28
PX(I)32.973
VY(I)17.923
VZ(I)83.074
TX(I)3735.5
MY(I)2077.1
MZ(I)991.86
  
PX(J) 32.973
VY(J) 17.923
VZ(J) 83.074
TX(J) 3735.5
MY(J) 3303.4
MZ(J)732.58
Element 50
PX(I) 214.36
VY(I) 30.34
VZ(I) 27.01
TX(I) 419.19
MY(I) 1047.6
MZ(I) 6256.2
  
PX(J) 201.57
VY(J) 83.50
VZ(J) 26.96
TX(J) 882.44
MY(J) 808.86
MZ(J)6196.5

Note:  PX (I) and PX (J) = Section axial force at node I and J

VY (I) and VY (J) = Section shear forces along Y direction at node I and J

VZ (I) and VZ (J) = Section shear forces along Z direction at node I and J

TX (I) and TX (J) = Section torsional moment at node I and J

MY (I) and MY (J) = Section bending moments along Y direction at node I and J

MZ (I) and MZ (J) = Section bending moments along Z direction at node I and J