psubbu2000's blog

Dear All,

Dear All,

Dear all,

Dear all,

(1)              Development of shear-lock free finite elements

Simple finite elements based on Timoshenko beam and Mindlin plate theories have been developed for the analysis of thick and thin structures (beams and plates) using standard finite element procedure. These elements have 3 dof and a new concept, Convergence Factor, is introduced in the formuation to accelerate convergence keeping the number of elements constant. No shear correction factor is used and no shear lock problem is encountered.

Subramanian

 In this research work, simple, efficient,highly accurate and shear_lock free finite elements based on the Timoshenko beam theory have been developed (see details for numerical results).

Dear Friends,

     I have developed a ser of 2-D finite elements for the problems of structural mechanics. These two dimensional elements are capable of accurately predicting three dimensional stress states using three diemnsional constitutive law. My doubt is: can these elements be used for the analysis of 3-D crack propagation using XFEM?.  The displacements chosen for these elements are simple.

Subramanian

Hi,

     Is it possible to use 2-D finite elements capable of accurately predicting all stresses (three dimensional stress state) for 3-D crack growth simulation?

Subramanian

Hi all,

      If an analytical model predicts accurately all stresses, including transverse normal stress across thickness, using constitutive law for the analysis of laminated composite structures, what is the use of this model and where can  I apply this model in composite structures and fracture mechanics?. Further this model is amenable to linear/nonlinear finite elements with less degrees of freedom per node (C0 and C1 finite elements are possible).

Bye

Subramanian

Dear friends,

     Is it possible to call nonlinear UEL and nonlinear UMAT for the same problem in ABAQUS? 

Subramanian