An Impact Vibration Experimental Research on the Pretension Rectangular Membrane Structure

Abstract

The pretension of the membrane is applied with biaxial tension bracket; the digital dynamometer is used for measuring the change of the tension; the concentrated impact load is applied on the surface of rectangular membrane; the displacement change of each feature point on the membrane surface is measured by noncontact laser displacement sensor. Through this experiment, the vibration displacement-time curve of the rectangular membrane under the fixed boundary condition is obtained. Further, the vibration frequency is given, according to the power spectral density function. The results of the experimental research are used to verify and correct theoretical formula and make the foundation for further theoretical research.

Dynamic response of rectangular membrane excited by heavy rainfall

“…The pre-tension of membrane structure was provided by the tension system (shown in Figure 3) (Guo et al., 2015). The membrane structure was fixed on the tension system by fixtures and stretched by the screw rod.…”

“…Due to the protection level of ZLDS100 the laser displacement sensor was IP67 – it could be applied to measure the vibration displacement of the membrane structure during the impact of heavy rainfall. Its performance parameters have an accuracy of 0.1%, sampling frequency of 2 kHz, and the resolution factor of 0.01% (Guo et al., 2015).…”

“…The experiment consisted of the tension process and load process. The membrane specimen was fixed on the tension system by fixtures, and stretched by the screw rod in order to form the membrane structure (Guo et al., 2015). Different levels of the pre-tension force were designed and applied synchronously.…”

Nonlinear Vibration of Orthotropic Rectangular Membrane Structures Including Modal Coupling

“…In order to apply the Galerkin method, a set of expansion functions must be chosen. The previous studies [11][12][13][14][15][16] only assumed symmetric basis functions; however, at large amplitudes, the asymmetric modes may also participate at the same order, contributing to different energy pathways through coupling to the symmetric modes. Thus, the expanded displacement variable w should include expansions of both basis function sets.…”

“…In that applied development, in order to obtain a simple and rapidly convergent solution, only a single-term shape function was used. To validate these theoretical results, Guo et al [14] designed an experiment and tested the dynamic characteristics. Zheng et al [15] considered uncertainty in the load and studied the stochastic vibration response.…”