The impulse response functions (force-strain relations) for Euler–Bernoulli and Timoshenko beams are considered. The response of a beam to a transverse impact force, including reflection at the boundary, is obtained with the convolution approach using the impulse response function obtained by a Laplace transform and a numerical scheme. Using this relation, the impact force history is determined in the time domain and results are compared with those of Hertz's contact law. In the case of an arbitrary impact, the location of the impact force and the time history of the impact force can be found. In order to verify the proposed algorithm, measurements were taken using an impact hammer and a drop test of a steel ball. These results are compared with simulated ones.
This paper constructs a new database for capital flow management policies (CFMs) in 16 emerging market economies from 1999 to 2008 and analyses their effect on extreme capital flow movements. We show that CFMs are effective in mitigating drastic changes of capital flows. We also find that CFMs do not have significant impacts on capital flow volumes. The results suggest that CFMs could be employed as policy toolkits for mitigating extreme capital flow movements without distorting capital flows in a normal period.
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