scholarly journals Designing efficient grid structures considering structural imperfection sensitivity

2020 ◽  
Vol 204 ◽  
pp. 109910 ◽  
Author(s):  
Fengcheng Liu ◽  
Ruoqiang Feng ◽  
Konstantinos Daniel Tsavdaridis ◽  
Guirong Yan
Keyword(s):  
Imperfection Sensitivity ◽  
Structural Imperfection

Fitness for Service Assessments of Bulging and Out-of-Round Structures

2004 ◽  
Author(s):  
Peter Carter ◽  
D. L. Marriott ◽  
M. J. Swindeman
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Internal Pressure ◽  
Structural Model ◽  
External Pressure ◽  
Element Analysis ◽  
Structural Imperfection ◽  
Level 2

This paper examines techniques for the evaluation of two kinds of structural imperfection, namely bulging subject to internal pressure, and out-of-round imperfections subject to external pressure, with and without creep. Comparisons between comprehensive finite element analysis and API 579 Level 2 techniques are made. It is recommended that structural, as opposed to material, failures such as these should be assessed with a structural model that explicitly represents the defect.

Structural imperfection, phase transitions, and the properties of magnetoresistive ceramic and films of La0.66Mn1.23V0.11(c)O2.842−V0.16(a)

2004 ◽  
Vol 30 (4) ◽  
pp. 299-304 ◽  
Author(s):  
V. P. Paschenko ◽  
A. A. Shemyakov ◽  
A. V. Pashechenko ◽  
L. T. Tsymbal ◽  
G. K. Kakazei ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Structural Imperfection

The Influence of Stochastic Imperfection Field on the Bearing Capacity of Hyperbolic Cooling Towers

2011 ◽  
Vol 374-377 ◽  
pp. 2297-2300
Author(s):  
Hai Zhao ◽  
Ya Zhou Xu ◽  
Guo Liang Bai
Keyword(s):  
Bearing Capacity ◽  
Large Scale ◽  
Initial Imperfection ◽  
Orthogonal Basis ◽  
Imperfection Sensitivity ◽  
Stochastic Field ◽  
Buckling Mode ◽  
Material Inhomogeneity ◽  
Initial Imperfections ◽  
Distribution Form

The uncontrollable factors such as construction errors, material inhomogeneity, etc. will inevitably lead to a certain initial imperfections. It is generally known that the stochastic initial imperfection of the structure is an important factor for affecting structural stability and bearing capacity. Since these imperfections are random in nature, this paper proposes the method mainly based on the standard orthogonal basis to expand the stochastic field, taking into account the decomposition of the stochastic initial imperfections related to structures, which is projected in the buckling mode orthogonal basis. In the end, the article by the stability analysis example shows that this method can use less random variables effectively describing the original stochastic imperfection field, and efficiently search for the most unfavorable initial imperfection distribution form in order to ensure the imperfection sensitivity structures have a higher reliability, so it can be applied to large-scale engineering structure stochastic imperfection analysis.

scholarly journals GENERALIZED IMPERFECTION SENSITIVITY LAW FOR STRUCTURES WITH BILATERAL SYMMETRY

2006 ◽  
Vol 62 (1) ◽  
pp. 153-160
Author(s):  
Kiyohiro IKEDA ◽  
Toshimitsu FUJISAWA
Keyword(s):  
Bilateral Symmetry ◽  
Imperfection Sensitivity

Imperfection-sensitivity of eccentrically stiffened cylindrical shells.

AIAA Journal ◽  
1967 ◽  
Vol 5 (3) ◽  
pp. 392-401 ◽  
Author(s):  
JOHN W. HUTCHINSON ◽  
JOHN C. AMAZIGO
Keyword(s):  
Cylindrical Shells ◽  
Imperfection Sensitivity ◽  
Stiffened Cylindrical Shells
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