Experimental and numerical investigation on dynamic characteristics of ship propulsion shafting under uncertainty based on displacement response

2021 ◽  
Vol 237 ◽  
pp. 109637
Author(s):  
Xiaoliang He ◽  
Guobin Li ◽  
Pengfei Xing ◽  
Lixun Lu ◽  
Honglin Gao ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Dynamic Characteristics ◽  
Ship Propulsion ◽  
Displacement Response

scholarly journals The analysis of dynamic characteristics and wind-induced displacement response of space Beam String Structure

2018 ◽  
Vol 38 ◽  
pp. 03032
Author(s):  
Yong Jian Chen ◽  
Zhen Fa Feng ◽  
Ai Qi ◽  
Ying Huang
Keyword(s):  
Dynamic Characteristics ◽  
Wind Load ◽  
Control Factor ◽  
Main Mode ◽  
Dead Weight ◽  
Initial Stress State ◽  
Displacement Response ◽  
Generation Structure ◽  
String Structure ◽  
Fluctuating Wind

The Beam String Structure structural system, also called BSS, has the advantages of lighter dead weight and greater flexibility. The wind load is the main design control factor. The dynamic characteristics and wind-induced displacement response of BSS are studied by the finite element method. The roof structure of the stadium roof of the Fuzhou Olympic Sports Center is the engineering background. 1)The numerical model was built by ANSYS, by shape finding, determine the initial stress state of structural members such as external cables; 2)From the analysis of dynamic characteristics, the main mode of vibration is the vibration of cables; 3)The wind speed spectrum of MATLAB generation structure is obtained by AR method, the structural response of the structure under static wind load and fluctuating wind load is calculated. From the analysis result, considering the equivalent static wind load of BSS , the design of adverse wind is not safe, and the fluctuating wind load should be taken into account.

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