On Postbuckling Behavior and Imperfection Sensitivity of Thin Elastic Plates on a Non-Linear Elastic Foundation

1970 ◽  
Vol 49 (1) ◽  
pp. 45-57 ◽  
Author(s):  
E Reissner
Keyword(s):  
Elastic Foundation ◽  
Elastic Plates ◽  
Postbuckling Behavior ◽  
Imperfection Sensitivity ◽  
Linear Elastic ◽  
Non Linear ◽  
Thin Elastic Plates

NON-LINEAR VIBRATIONS OF A SLIGHTLY CURVED BEAM RESTING ON A NON-LINEAR ELASTIC FOUNDATION

1998 ◽  
Vol 212 (2) ◽  
pp. 295-309 ◽  
Author(s):  
H.R. Öz ◽  
M. Pakdemirli ◽  
E. Özkaya ◽  
M. Yilmaz
Keyword(s):  
Elastic Foundation ◽  
Curved Beam ◽  
Linear Elastic ◽  
Non Linear ◽  
Linear Vibrations

scholarly journals BUCKLING AND POSTBUCKLING BEHAVIOR COMPRESSED OF THE RECTANGULAR PLATE WITH INTERNAL STRESSES, LYING ON NON-LINEAR ELASTIC FOUNDATION

2019 ◽  
Vol 81 (2) ◽  
pp. 137-145
Author(s):  
I. M. Peshkhoev ◽  
B. V. Sobol
Keyword(s):  
Rectangular Plate ◽  
Elastic Foundation ◽  
Asymptotic Formulas ◽  
Internal Stresses ◽  
Postbuckling Behavior ◽  
Non Linear ◽  
Compressive Loads ◽  
Elastic Rectangular Plate ◽  
Non Linear Operator ◽  
Edge Dislocations

The problem of the effect of initial imperfections in the form of small transverse loads on the loss of stability and the post-critical behavior of a compressed elastic rectangular plate lying on a non-linearly elastic foundation is considered. The plate contains in a flat state continuously distributed edge dislocations and wedge disclinations or other sources of internal stresses. The research is conducted on the basis of a modified system of non-linear Karman equations for an elastic plate with dislocations and disclinations which additionally takes into account the reaction of the base in the form of a second or third degree polynomial in deflection. Two cases of boundary conditions are considered: free pinching and movable hinged support of the edges. The problem is reduced to solving a non-linear operator equation which is investigated by the Lyapunov-Schmidt method. The linearized equation is a multiparameter boundary value problem for eigenvalues which is solved by a finite-difference method. The coefficients of the system of ramification equations are calculated numerically. The post-buckling behavior of the plate is investigated and asymptotic formulas are derived for new equilibria in the neighborhood of critical loads. For different values of the parameters of compressive loads and the parameter of internal stresses, relations have been established between the values of the parameters of the base, at which its bearing capacity is preserved in the neighborhood of the classical value of the critical load.

scholarly journals Dynamic Buckling of a Clamped Finite Column Resting on a Non – linear Elastic Foundation

2019 ◽  
pp. 1-47
Author(s):  
E. Julius, Bassey ◽  
M. Anthony, Ette ◽  
U. Joy, Chukwuchekwa ◽  
C. Atulegwu, Osuji
Keyword(s):  
Elastic Foundation ◽  
Governing Equation ◽  
Asymptotic Expansions ◽  
Perturbation Technique ◽  
Dynamic Buckling ◽  
Buckling Load ◽  
Linear Elastic ◽  
Non Linear ◽  
Relevant Variables ◽  
Independent Parameters

The analysis of the dynamic buckling of a clamped finite imperfect viscously damped column lying on a quadratic-cubic elastic foundation using the methods of asymptotic and perturbation technique is presented. The proposed governing equation contains two small independent parameters (δ and ϵ) which are used in asymptotic expansions of the relevant variables. The results of the analysis show that the dynamic buckling load of column decreases with its imperfections as well as with the increase in damping. The results obtained are strictly asymptotic and therefore valid as the parameters δ and ϵ become increasingly small relative to unity.

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