SKJoe
Mechanical
- Jun 6, 2005
- 78
Hi
I would like to model soil continuum by plane42 in ansys, material model drucker-prager. but after initial solution I
realized that there are some tension stresses...Is there anyone who can help ?
I found this paragraph in book "The finite element methods Vol. 2" by Zienkiewicz O.C., Taylor R.L. (cited):
"it suffices to carry out the
analysis elastically and wherever tensile stresses develop to reduce these to zero. The
initial stress (modified Newton-Raphson) process here is natural and indeed was developed
in this context[102]. The steps of calculation are obvious but it is important to
remember that the principal tensile stresses have to be eliminated." - but how to eliminate this principal tensile stresses ?
ps : I hope it is clear enough and sorry for my english
I would like to model soil continuum by plane42 in ansys, material model drucker-prager. but after initial solution I
realized that there are some tension stresses...Is there anyone who can help ?
I found this paragraph in book "The finite element methods Vol. 2" by Zienkiewicz O.C., Taylor R.L. (cited):
"it suffices to carry out the
analysis elastically and wherever tensile stresses develop to reduce these to zero. The
initial stress (modified Newton-Raphson) process here is natural and indeed was developed
in this context[102]. The steps of calculation are obvious but it is important to
remember that the principal tensile stresses have to be eliminated." - but how to eliminate this principal tensile stresses ?
ps : I hope it is clear enough and sorry for my english
