Abstract
As the second kind of inverse problems, the dynamic load identification technology has an important vast application prospect in engineering practice. In this paper, the dynamic load identification technology of the one-dimensional structure of continuous beam based on the modal coordinate transformation theory is deduced in detail. For the one-dimensional distribution of the dynamic load, we decompose it with the mode functions in the modal coordinate space. The liner relationship between the time function coefficients of the distributed load and the modal excitations is established. Then the modal excitations can be identified from the known response data of the measuring points based on the modal theory to rebuild the distributed dynamic load. In conclusion, the simulation examples of distributed dynamic load identification show that the proposed is reliable and practical, and can be flexibly used in engineering.
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