Recent content by hari123

Yup, the internal energy will increase (due to increase in strain energy) during loading. And it should be technically equal to the external work done on the body. (assuming no dissipations and other factors). This law (internal energy = workdone) can be observed in the geometrical linear...

Hi all, I have performed a small static analysis with one element (C3D8). The bottom face of element is completely constrained, and the top part is displaced. In the geometrical linear analysis, the internal energy (ALLIE) and the work done (ALLWK) are equal. So, with ETOTAL = ALLIE - ALLWK...

Hi, Thank you for your reply @Chestermiller . Yup, I have gone through Abaqus manual, but it wasn't mentioned clearly, regarding this topic. But anyway, now i came to know that for the case of nonlinear analysis Abaqus uses logarthmic strain in its UMAT.

Hi all, I have some doubts regarding the strain tensors Abaqus uses for the case of Geometrical non linear analysis. In the case of geometrically linear analysis, all the strain tensors will be equal to engineering strain, So it doesn't matter which strain tensor Abaqus uses. But for...

Yup @Antarres , This is really Informative . Thank you

Thank you for your reply @Ray Vickson I am not quite familiar with the Integrating factor technique. I will go through it and then will try to solve the equation.

Thank you for your reply @Antarres . I have tried using y' = (Ax + B) / (x+2)2 and I was able to get the desired particular solution. But i have a small doubt about this idea, in the line " try to fit one term with the general form" of your reply. What do you mean with "general form" ? Do...

Homework Statement I am trying to solve 2nd order in-homogeneous equation of y(x) (given below). I was able to get the Homogeneous solution , but i am not able to create the Ansatz for the particular solution. It would be really helpful if anyone suggests an Ansatz for this equation and also...