User defined spectrum

SOFiSTiK Teddy
1

Hello,

I am trying to use a user defined spectrum with RESP and FUNC commands as follows:

RESP TYPE USER MOD 5[%] TITL ‘A2-A4’
FUNC T F
0.00 0.4590577
0.85 0.4590577
0.9 0.4498862
1.0 0.3580345
1.2 0.2242287
1.4 0.1642531
1.6 0.1300327
1.8 0.1081451
2.25 0.0848987
2.5 0.0627637
2.75 0.0510758
3.0 0.0440565
3.5 0.0376297
4.0 0.0287518
4.5 0.0232996
5.0 0.0191367
5.5 0.0157397
6.0 0.0141264
6.5 0.0122037
7.0 0.0106695
7.5 0.0095599
8.0 0.0083494
8.5 0.0072816
9.0 0.0063769
10.0 0.0048575
ACCE TYPE DIRN AY 9.81

But this doesnt work. I aparently draws the spectra but i get the following message:

+++++ warning no. 2085 in program SL_IA_ACCE ; input line: 35
With the spectra no base accelerations have been defined in the given directions
(Record ACCE has to be defined after record RESP)

and 0.0 in internal forces etc from this LC

2

Solved,
To make this work you must define ground acceleration y the response definition as follows:

LC 901 TYPE NONE
RESP TYPE USER MOD 5[%] AG 9.81 AH 1.0 AV 0.7
FUNC T F
0.00 0.4590577
0.85 0.4590577
0.9 0.4498862
1.0 0.3580345
1.2 0.2242287
1.4 0.1642531
1.6 0.1300327
1.8 0.1081451
2.25 0.0848987
2.5 0.0627637
2.75 0.0510758
3.0 0.0440565
3.5 0.0376297
4.0 0.0287518
4.5 0.0232996
5.0 0.0191367
5.5 0.0157397
6.0 0.0141264
6.5 0.0122037
7.0 0.0106695
7.5 0.0095599
8.0 0.0083494
8.5 0.0072816
9.0 0.0063769
10.0 0.0048575
ACCE TYPE DIRN AY 1
This works perfect now.
A mesage for the developers: Please consider improving mauals and include more examples (i couldn find an example of a user defined spectrum using FUNC and it took me some extra hours to make this work).