An Optimal Selection of the Clamping Fixture for Manufacturing an I-Shaped Composite Beam

Abstract

In this paper, the influence of the different clamping zones of a web on the vibration of I-shaped composite beams is discussed. This current study is divided into two steps. In the first step, according to the different clamping spacings, through vibration simulation analysis, the optimal clamping spacing was selected. In the second step, the optimal new fixture was designed by means of different clamping positions and shapes. The analysis also reveals that a reduction in the clamping space does not contribute to a reduction in vibration. A newly selected fixture was designed based on the results that were delivered by the finite element model analysis of the L fixture in the upper and lower. Based on static analysis, the improved fixture was able to significantly reduce displacement, stress, and strain compared with the original one. By using dynamic analysis, modes, the frequency response, and random analyses, we found that the improved fixture could enhance the natural frequencies of the structure and reduce vibration displacement and acceleration during manufacturing. From the 2000 Hz sweep, the peak values of the power spectral density of displacement and acceleration went down by about 100 and 10 times, respectively.