Impact localization and identification under a constrained optimization scheme

Load identification becomes essential when direct measurement of structure loads is unavailable. In this paper, a method for localization and identification of impact is proposed. The location of impact is first determined with an error functional indicator using the Complex Method. The identification of impact history is then considered a constrained optimization problem. The solution of the problem is found using Gradient Projection Method. Both numerical and experiment results proved the validity of the proposed method. The identification process is faster and more robust with the techniques introduced. Further discussion and advice for implementation are also provided.