suffering from convergence of forces problem.
1) Rigid body motion is not there as body is under compressive load.
2) Loading cycle: 40 load step with 50N at each step is applied but in standard paper the same body has 2000N (loading step not discuss)
3) Material instability: thats the question how to check it?
4) Element formulation error : this error is always there ?
Every time element get distorted error is there.
check element shape.
My question is this : In mesh metric after checking that: skewness is below .5 it is good.
But some element(1%) are having skewness 0.9 then what to do?
after that element quality is checked
Now explain me what to do other than decrease the element size?
how to generate mesh for skewness 1, element quality having value near 1.
i Am using newton raphson residual to find out the place where its value is high and using sphere of influence.