{"id":164143,"date":"2021-11-20T16:59:16","date_gmt":"2021-11-20T16:59:16","guid":{"rendered":"\/forum\/forums\/topic\/damping-consideration-in-ansys\/"},"modified":"2021-11-23T12:06:41","modified_gmt":"2021-11-23T12:06:41","slug":"damping-consideration-in-ansys","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/damping-consideration-in-ansys\/","title":{"rendered":"Damping consideration in ANSYS."},"content":{"rendered":"
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Dear All, <\/p>\n

I am doing a full transient analysis of an RCC structure. After going through to many literature about damping consideration I am now confuse what damping should I consider. Can any one simple some of the questions I have.<\/p>\n

1) I have first three frequency of my structure along with the respective damping which 1.66 Hz\/2.40 %, 5.90Hz\/2.40% and 10.20Hz\/1.1% respectively. How I can decide what two frequency I should select and what is the criteria for the selection calculating alpha and beta for rayleigh damping?<\/p>\n

2) Additional, my structure is reinforced concrete so do I need to define in material data of both steel and concrete the value of alpha and beta?<\/p>\n

3) What damping need to be consider for full transient analysis? I.e material dependent damping or rayleigh damping or any other or a combination?<\/p>\n

Note: My analysis is a full tansient for an RCC structure having an earthquake loading.<\/p>\n

<\/p>\n<\/p>\n

Best regard<\/p>\n","protected":false},"template":"","class_list":["post-164143","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t