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  1. 0922

    How to identify the natural frequency for the phase/magnitude?

    I did a bump test. In the magnitude chart in FRF, there are few peaks, but none of them corresponds to +90degree in the phase chart, but there is one points to -90 degree. Can I say the peaks are natural frequency anyways? please help
  2. 0922

    singular stress concentration, how to constraint this part?

    Hello all, I am working on a solid model of structural cage with some ribs inside. Constraints: fixed the first corner-point three movements; fixed the second corner-point two movements; fixed the third corner-point one movement. It does work in ANSYS. Result: generate very high stress...

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