Experimental investigation on response characteristics of buried pipelines under surface explosion load

2020 ◽  
Vol 183 ◽  
pp. 104101 ◽  
Author(s):  
Qichen Tang ◽  
Nan Jiang ◽  
Yinkang Yao ◽  
Chuanbo Zhou ◽  
Tingyao Wu
Keyword(s):  
Experimental Investigation ◽  
Buried Pipelines ◽  
Response Characteristics ◽  
Surface Explosion ◽  
Explosion Load

Transfer Functions for Helical Springs

1969 ◽  
Vol 91 (4) ◽  
pp. 1011-1016 ◽  
Author(s):  
B. L. Johnson ◽  
E. E. Stewart
Keyword(s):  
Experimental Data ◽  
Experimental Investigation ◽  
Steady State ◽  
Transfer Functions ◽  
Helical Springs ◽  
Response Characteristics ◽  
Transmitted Force ◽  
Vibratory Motion ◽  
Frequency Response Characteristics ◽  
Displacement Force

This study reports the results of an analytical and experimental investigation of helical springs subjected to vibratory motion. Transfer functions are presented for both displacement and transmitted force as outputs with force as the input. Steady-state sinusoidal Magnitude Ratio (displacement—force) and Transmittance Ratio (force—force) are plotted along with substantiating experimental data. It is shown that an actual spring displays frequency response characteristics over most of the frequency spectrum that would render its function useless in many cases.

Nonlinear Response Characteristics of Discus Data Buoy Hull

2008 ◽  
Author(s):  
R. Balaji ◽  
S. A. Sannasiraj ◽  
V. Sundar
Keyword(s):  
Experimental Investigation ◽  
Response Time ◽  
Nonlinear Wave ◽  
Nonlinear Response ◽  
Phase Portraits ◽  
Testing Conditions ◽  
Response Characteristics ◽  
Wave Elevation ◽  
Time Histories ◽  
Spectral Representations

The response characteristics of the discus hull shaped data buoy under the influence of nonlinear wave conditions was studied in an experimental investigation. The measured wave elevation and the buoy response time histories were analyzed by phase-portraits as well as through the spectral representations. The details of the model, instrumentation, testing conditions and the analysis are presented and discussed in this paper.

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