VM-NR1677-01-6

VM-NR1677-01-6
NUREG/CR-1677: Volume 1, Benchmark Problem No. 6

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 263-327
Analysis Type(s):
Modal analysis (ANTYPE = 2)
Spectral analysis (ANTYPE = 8)
Element Type(s):
3D 3-Node pipe (PIPE289)
3D 3-Node elbow (ELBOW290)
Spring-Damper Element (COMBIN14)
Mass element (MASS21)
Input Listing:

Test Case

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

VM-NR1677-01-6-a

Results Comparison

Table 110: Frequencies Obtained from Modal Solution

ModeFrequency
16.343
29.949
310.092
410.595
514.995
617.391
719.099
819.678
921.253
1023.578
1128.767
1229.697
1330.887
1432.549
1537.329
1642.621
1747.809
1849.877
1950.446
2053.446
2156.732
2258.951
2367.542
2470.246
2574.189
2679.824
2780.667
2889.019
2990.993
3093.536
31100.38

Table 111: Maximum Displacements and Rotations Obtained from Spectrum Solve

Result_NodeValue
UX at node582.999E-2
UY at node1079.129E-2
UZ at node102.069E-2
ROTX at node12.917E-4
ROTY at node13.533E-4
ROTZ at node713.153E-4

Table 112: Element Forces and Moments obtained from Spectrum Solve

ResultMAPDL
Element 28
PX(I)1089.200
VY(I)2022.600
VZ(I)600.640
TX(I)53740.000
MY(I)0.174E6
MZ(I)0.396E6
  
PX(J) 1089.200
VY(J) 2022.6
VZ(J) 600.64
TX(J) 53740
MY(J) 0.205E6
MZ(J)0.282E6
Element 50
PX(I) 1808.6
VY(I) 1864.0
VZ(I) 1480.2
TX(I) 95719.0
MY(I) 64400.0
MZ(I) 0.1652E6
  
PX(J) 1776.3
VY(J) 1891.3
VZ(J) 1479.3
TX(J) 0.1004E6
MY(J) 71717.0
MZ(J)0.1789E6

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