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  1. 5.trace

    MDOF Spring-Mass-Damper Problem

    Hi dcascap, Thank you for your response. I had those set to -1 since the initial conditions are applying to the modes for SOL 112, the qrg said I should use that if I'm working in modal coordinates.
  2. 5.trace

    MDOF Spring-Mass-Damper Problem

    Good afternoon, I am working on simulating a 3 degree of freedom unforced spring-mass-damper system in MSC Nastran 2024.1. It consists of 4 masses combined together with a wall at each end and I want to find the displacement over time with initial conditions for displacement and velocity. I...

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