|Table of Contents|

Analysis of the Most Unfavorable Simple Dynamic Loads for Single-layer Spherical Latticed Shells(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2007年02期
Page:
13-18
Research Field:
Publishing date:
2007-06-20

Info

Title:
Analysis of the Most Unfavorable Simple Dynamic Loads for Single-layer Spherical Latticed Shells
Author(s):
YUAN Hong-yu1; 2;  YE Ji-hong1;  SHEN Shi-zhao3;  SHAN Jian1
1. School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China; 2. Nanjing Branch of Beijing Capital Engineering Architectural Design Ltd, Nanjing 210018, Jiangsu, China; 3. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
Keywords:
single-layer spherical latticed shell;  harmonic load;  step load;  the most unfavorable dynamic load;  limit load;  dynamic response
PACS:
TU311
DOI:
-
Abstract:
Through simultaneously considering geometric non-linear and material non-linear, the dynamic responses of single-layer spherical latticed shells subjected to harmonic loads and step loads were researched respectively, and the most unfavorabledynamic loads of the structure were analyzed. Under the analysis of dynamic behavior of single-layer spherical latticed shells subjected to harmonic loads with different frequency and step loads with different duration, the relationships between the structural dynamic response and its self vibration characteristic, as well as the load frequency characteristic were built up, by which the most unfavorable loads of single-layer sphericallatticed shells were determined. The results show that under either horizontal harmonic loads or vertical harmonic loads, when the excitation load frequency is closed to the natural frequency which corresponds to the largest vibration mode participation coefficient in the direction of excitation, the limit harmonic load is the lowest; when the duration of step load is closed to the half of natural period which is versus the largest modes of vibration participation coefficient in the direction of excitation, the limit step load is the lowest.

References:

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Memo

Memo:
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Last Update: 2007-06-20