The critical load of the pipe helical buckling, contact force distribution of pipe on the bore hole and the average side contact force of the pipe post buckling in the horizontal section of horizontal well are calculated by using the finite difference method and the Newton iteration method.
Based on Mindlin assumption and the large-deformation plate/shell theory, a nonlinear computational finite element (FE) model is proposed to study the post-buckling behavior of a composite panel embedded with a single through-the-width delamination. The delaminated composite panel is simulated by a reference surface finite element combining with a virtual bar element to avoid the overlapping between two sublaminates at the delamination front.
In this paper, the Post-bucking and failure analysis software system forcomposite thin-wall structures (COMPOSS) was transplanted from FORTRAN77into Win9x platform, which improved the expansibility and the capability ofcalculation and made the interface of operation friendly.
All three sections have certain post-buckling strength, and the failure modes of most of the specimens contained distortional buckling.
The design method for the shear resistance of aluminum alloy I-section members is presented, taking into consideration of the post-buckling strength of webs and the restraint effect of flanges, and the practical design formulas are proposed.
The proposed design formulas for the shear resistance of aluminum alloy I-section members is used to calculate accurately the post-buckling resistance of webs and the shear resistance contribution of flanges.
The present prediction provides the initial step to discuss the possibility of post-buckling strength design at high temperature stiffened panels.
Perturbation analysis on post-buckling behavior of pile
Analysis of dynamical buckling and post buckling for beams by finite segment method
Because the deformation of a beam is not restricted by the discrete model and dynamic equation, the post buckling analysis can be done in above math model.
The presence of aerodynamic flow results in postponing the buckling temperature and in suppressing the post buckling deflection while the temperature increase gives way for higher limit cycle amplitude.
Initial post buckling solution of a cracked physically nonlinear cylindrical shell
Applications are illustrated by nonlinear, nonsmooth equilibrium problems in Hencky's plasticity, 3D cylindrical structures and post buckling analysis of elastoplastic bar with jumping and hardening effects.