Title of article :
Displacement-based methods for calculating the buckling load and tracing the post-buckling regions with Dynamic Relaxation method
Author/Authors :
Javad Alamatian، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
14
From page :
84
To page :
97
Abstract :
This paper prepares new features for applying the Dynamic Relaxation (DR) method in buckling and post-buckling structural analyses. Here, controlling the displacement’s increment is the main concept so that the minimum residual displacement and the minimum kinetic energy criteria are designed for updating the load factor in DR iterations. These new formulations do not affect the DR’s stability and they are successfully applied to both viscous and kinetic DR algorithms. Numerical analyses of structures with snap-through and snap-back behaviors show that the accuracy and the convergence rate of the suggested methods are higher than the well-known existing approaches such as the arc-length technique, especially, if they are combined with the kinetic DR algorithm. Calculating the buckling load is another interesting application of the proposed methods, performed here. In this manner, the suggested DR algorithms could numerically present the accurate buckling load of structures.
Keywords :
Dynamic Relaxation , Displacement-based method , Buckling load
Journal title :
Computers and Structures
Serial Year :
2013
Journal title :
Computers and Structures
Record number :
1209478
Link To Document :
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