inqury with the lsim command

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David Zhang
David Zhang el 4 de Oct. de 2013
Comentada: David Zhang el 4 de Oct. de 2013
I am doing the time-history analysis of structure under earthquake motions. The time step of the recorded motion is 0.001. When I use lsim function to conduct the direct integration, and it is noted with the following warning. ---- Warning: The input signal is undersampled. Use a sampling period smaller than 0.00049. > In warning at 26 In ssdata.lsim>LocalCheckSampling at 142 In ssdata.lsim at 43 In lti.lsim at 102 In msup at 92 ----
so how i can solve this problem? reduce the time step? which i believe is not a good option.
  1 comentario
David Zhang
David Zhang el 4 de Oct. de 2013
any suggestions on this warning?

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