Attenuation coefficients of damping materials Answered

Hello I am using OnScale lab for modelling of devices for under water applications. in order to get better results, I need to use damping materials at different frequencies. But I didn't get any idea regarding how to add bulk and shear attenuations of such damping materials at required frequencies. My project is stucked with this problem. I tried 'damping tool' and red the article "what is material damping" for solving this problem. But i didn't get any idea regarding how to set the frequency dependent bulk and shear attenuation factor of materials. Please give necessary instructions for solving this issue.

4 comments

  • Official comment

    Hi Sneha,

    Take a look at Help > Command Reference to see where you define the bulk and shear attenuation for the different damping models. E.g. For viscous damping

    Best Regards,

    Chloe

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  • Thank you for your support. I am not using analyst mode. I am using designer mode. So when i add new materials in my project, the properties of damping materials like SADM , Perspex etc are incomplete because i don't know how to fix bulk and shear attention of these materials at various frequencies.

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  • The same properties you fill out in the analyst code, you can also fill out when you add a material in Designer.

     

    Best Regards,

    Chloe

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  • Thank you for your support. The actual problem is that I am unable to find out the frequency dependent bulk and shear attenuation coefficients of damping materials which are associated with my project. I tried damping tool for it. But this tool also required bulk and shear attenuation loss factor for completing the task. I red the article ' what is material damping' in OnScale help. But i couldn't get an idea to find out attenuation coefficients of various materials at different frequencies.

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