Vitkacy1989
Structural
- Dec 8, 2012
- 54
Hi Folks,
I understand Ansys solves static problem by following steps (showing just those important to my question, order is important):
1. Material is assigned to elements
2. Shape functions and stiffness matrices are created basing Young's modulus E
3. Calculation of displacements
4. Strains are post-calculated from shape functions
5. Stresses are calculated basing material definition
(I) In case of elastic material, elastic E jumps into step no 2.
(II) But what happens in case when bilinear sig-eps material curve is used, does plastic E jumps into step no 2 anytime?
Results for cases (I) and (II) for exact configuration apart from material, generate larger displacements for case (II). And hence the question.
I understand Ansys solves static problem by following steps (showing just those important to my question, order is important):
1. Material is assigned to elements
2. Shape functions and stiffness matrices are created basing Young's modulus E
3. Calculation of displacements
4. Strains are post-calculated from shape functions
5. Stresses are calculated basing material definition
(I) In case of elastic material, elastic E jumps into step no 2.
(II) But what happens in case when bilinear sig-eps material curve is used, does plastic E jumps into step no 2 anytime?
Results for cases (I) and (II) for exact configuration apart from material, generate larger displacements for case (II). And hence the question.
