*** ERROR # 410 *** Specifying lower bound in EIGRL card may compromise RESVEC quality. Subcase ID 1 EIGRL ID 3. *** Run terminated because of error(s) in the input data.

Ava Mary
Ava Mary Altair Community Member
edited March 2022 in Community Q&A

I am analysis Computation of ERP. Then I get error .

*** ERROR # 410 ***
Specifying lower bound in EIGRL card may compromise RESVEC quality.
Subcase ID 1 EIGRL ID 3.

*** Run terminated because of error(s) in the input data.
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Answers

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited March 2022

    Your EIGRL has a V1 (lower frequency) set to 300.0

     

    Modal FRF analysis uses Residual Vectors to enhance the frequency domain and to get a better result.

    Modal solution combines multiple modal responses to replicate the deformations of your structure, so if you cut the lower frequencies/modes you will lose accuracy.

    the basic idea follows fourier series principle, where a generic function can be decomposed into sine/cosine functions. If you remove some frequencies, you lose accuracy.

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