Application of the global/local model concept for the computation of stress frequency response functions
نویسنده
چکیده
Fatigue life prediction of dynamically loaded structures employs stress frequency response functions (FRF’s) in the critical area of the structure. The global/local model concept is used for the computation of the stress FRF’s. The method combines the result of a dynamic finite element (FE) analysis applied to a coarse model of the total structure with the result of a static FE analysis applied to a fine model of a small region around the critical zone. This paper contains a global description of the global/local model concept. A special feature of the method, the internal force distribution, is explained in detail and the result of the global/local model concept is presented for a test case.
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