scholarly journals Effect of random system properties on bending response of thermo-mechanically loaded laminated composite plates

2011 ◽  
Vol 35 (12) ◽  
pp. 5618-5635 ◽  
Author(s):  
Achchhe Lal ◽  
B.N. Singh
Keyword(s):  
Laminated Composite ◽  
Composite Plates ◽  
Laminated Composite Plates ◽  
Random System ◽  
System Properties ◽  
Random System Properties ◽  
Bending Response

THERMAL BUCKLING RESPONSE OF LAMINATED COMPOSITE PLATE WITH RANDOM SYSTEM PROPERTIES

2009 ◽  
Vol 06 (03) ◽  
pp. 447-471 ◽  
Author(s):  
ACHCHHE LAL ◽  
B. N. SINGH
Keyword(s):  
Eigenvalue Problems ◽  
Perturbation Technique ◽  
Plate Thickness ◽  
Laminated Composite ◽  
Composite Plates ◽  
Random System ◽  
Second Order Statistics ◽  
Order Deformation ◽  
System Properties ◽  
Random System Properties

This paper deals with second-order statistics of buckling temperature of shear deformable laminated composite plates resting on elastic foundation with random system properties. The temperature field is assumed to be a uniform distribution over the plate surface and through the plate thickness. The material properties are assumed to be independent of temperature. Based on the higher-order deformation theory, C0 finite element in conjunction with mean-centered first-order perturbation technique is proposed and applied to derive the random thermal eigenvalue problems. A detailed parametric study is carried out to highlight the sensitivity of the response. The results are compared with existing and Monte Carlo simulation.

EFFECT OF UNCERTAIN SYSTEM PROPERTIES ON THERMO-ELASTIC STABILITY OF LAMINATED COMPOSITE PLATES UNDER NONUNIFORM TEMPERATURE DISTRIBUTION

2010 ◽  
Vol 02 (02) ◽  
pp. 399-420 ◽  
Author(s):  
ACHCHHE LAL ◽  
B. N. SINGH
Keyword(s):  
Temperature Distribution ◽  
Order Statistics ◽  
Shear Deformation Theory ◽  
Laminated Composite ◽  
Composite Plates ◽  
Thermal Buckling ◽  
Second Order ◽  
Random System ◽  
Second Order Statistics ◽  
System Properties

Uncertainties in system properties are inherent in all engineering materials. This paper presents the second-order statistics of thermal buckling response of shear deformable laminated composite plate resting on elastic foundation with random system properties under nonuniform tent-like temperature distribution. The mathematical model based on higher-order shear deformation theory [HSDT] is presented. A C0 finite element method in conjunction with first-order perturbation technique is employed to derive the second-order statistics (mean and the standard deviation) of the thermal buckling temperature under nonuniform tent-like temperature distribution. Numerical results have been compared with available results in literatures and independent Monte Carlo simulation.

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