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Dynamic response of rectangular prestressed membrane subjected to uniform impact load

Li D., Zheng Z. L., Liu C. Y., Zhang G. X., Lian Y. S., Tian Y., Xiao Y., Xie X. M.

Archives of Civil and Mechanical Engineering

2017

Vol. 17, no. 3

586--598

This paper investigated the dynamic response of rectangular prestressed membrane subjected to uniform impact load theoretically and experimentally. The dynamic response proceeds in two stages, namely, forced vibration and free vibration. Firstly, the maximal displacement for forced vibration is obtained by means of the principle of minimum potential energy based on the theoretical model proposed. Then, equations of motion for the transverse free vibration are derived based on thin-plate theory, and simplified by using Galerkin method. Consequently, the analytic solutions of dynamic parameters, such as frequency, displacement, amplitude, velocity, and acceleration, for free vibration are obtained by means of the multiple-scale perturbation method. In order to identify the reliability of theoretical model, the corresponding experimental study is carried out based on the developed experimental system. Furthermore, the effects of pretension force and load on the dynamic response of membrane are discussed, respectively. The present work provides a theoretical model to calculate the dynamic response of prestressed membrane subjected to uniform impact load, and a set of experimental system to study this problem.

Review of drop analysis technology for liquid property study

Song Q., Zhang G. X., Qiu Z. R.

Opto-Electronics Review

2005

Vol. 13, No. 1

1--8

Drop analysis takes a multidisciplinary and integrated approach to monitor the drop growth in the process of liquid forming into the drop, so as to measure the physical and chemical parameters of the tested liquids and to discriminate different liquids qualitatively and quantitatively. In this paper, fiber drop analysis (FDA), capacitive drop analysis (CDA), image drop analysis (IDA,) and spectral drop analysis (SDA) are summarized in review. Main features and application fields of each method are introduced. The combination of various drop analysis technologies and its significance are presented.