A co-rotational 8-node assumed strain element for large displacement elasto-plastic analysis of plates and shells

2003 ◽  
Vol 15 (2) ◽  
pp. 199-223 ◽  
Author(s):  
K.D. Kim
Keyword(s):  
Large Displacement ◽  
Assumed Strain ◽  
Plastic Analysis ◽  
Plates And Shells

Residual Strength of Dented Tubulars: Impact Energy Correlation

1985 ◽  
Vol 107 (4) ◽  
pp. 485-492 ◽  
Author(s):  
D. M. Richards ◽  
A. Andronicou
Keyword(s):  
Impact Energy ◽  
Residual Strength ◽  
Lateral Load ◽  
Offshore Structures ◽  
Large Displacement ◽  
Energy Correlation ◽  
Tubular Columns ◽  
Plastic Analysis

A procedure for the analysis of the damage of tubular members by denting and bending under lateral load is described. This leads to a relationship between impact energy and consequent damage. A large displacement, elasto-plastic analysis of dented tubular columns with imperfect straightness is introduced, which allows the effect of impact energy on member residual strength to be determined. Examples of damage reported from offshore structures are used to illustrate the analysis.

Elasto-Plastic Analysis of Frame Structures under Large Displacement-Rotation Deformations

2011 ◽  
Vol 243-249 ◽  
pp. 5968-5974
Author(s):  
Dong Quan Yang ◽  
Hong Peng
Keyword(s):  
Finite Element ◽  
Stiffness Matrix ◽  
Control Method ◽  
Large Displacement ◽  
Frame Structures ◽  
Finite Element Program ◽  
Numerical Experimentation ◽  
Plastic Analysis ◽  
Element Program ◽  
Displacement Control Method

A finite element program for elasto-plastic analysis of 3D beams and frame structures under large displacement/rotations is developed. The element is Timoshenko beam element based on mechanics of continuum. Constitutive equations for large displacements/rotations in elastic stage are expressed in an explicit way which is suitable for programming. The modification of constitutive equation is presented for the analysis of elasto-plastic problems. A fiber model is adopted for the calculation of stiffness matrix and internal forces. For solution of nonlinear finite element equations, general displacement control method and semi-modified stiffness matrix method is adopted. The results of numerical experimentation show that the program work well for 3D beams and frame structures under elasto-plastic large displacement/rotations.

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