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RSPEC |
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RSPEC |
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»Click here to display Table of Contents«
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RSPEC |
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RSPEC |
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Bulk Data Entry
RSPEC – Response Spectrum Analysis Specifications
Description
Specifies directional combination method, modal combination method, excitation direction(s), response spectra and scale factors.
Format
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
RSPEC |
RID |
DCOMB |
MCOMB |
CLOSE |
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DTISPEC1 |
SCALE1 |
X11 |
X12 |
X13 |
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DTISPEC2 |
SCALE2 |
X21 |
X22 |
X23 |
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DTISPEC3 |
SCALE3 |
X31 |
X32 |
X33 |
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Field |
Contents |
RID |
RSPEC identification number. Must be unique. No default (Integer > 0) |
DCOMB |
Method for directional combination. ALG - Algebraic Default = ALG (ALG or SRSS) |
MCOMB |
Method for modal combination. ABS - absolute sum Default = ABS (ABS, SRSS, CQC, or NRL) |
CLOSE |
Modal frequency closeness parameter. Default = 1.0 (Real) |
DTISPECi |
Response spectrum reference. A DTI,SPECSEL entry identification number. No default (Integer > 0) |
SCALEi |
Scale factor for excitation. No default (Real <> 0.0) |
Xij |
Components of a vector representing ground excitation i, j = 1..3 |
| 1. | DTISPEC2/SCALE2/X21/X22/X23 and DTISPEC3/SCALE3/X31/X32/X33 are optional ground excitations for multi-directional excitation. The directions of excitation have to be orthogonal to each other and will be reported as error otherwise. |
| 2. | Refer to Response Spectrum Analysis in the User’s Guide for more details. |
See Also:
