ripubcn
Mechanical
- Aug 28, 2009
- 8
Hello everybody,
I’m new in Ansys and I need advises in order to model a tensile/shear test of a blind rivet. I’ve already spent a lot of time trying to get a solution but I achieved... anything!
Let me explain the main steps I do and just tell me if I miss any important step or if I do a big mistake… or just what you think about it, any comment would be welcomed!
You can see the geometry in the attached file.
ELEMENTS
SOLID45 for plates (3-D Structural Solid)
SOLID92 for rivet (3-D 10-Node Tetrahedral Structural Solid)
MATERIAL
Plates: 1. Linear elastic isotropic: E=1.5e5, poison=0.3
Rivet: 2. Linear elastic isotropic: E=2e5, poison=0.27
The materials are both steel 200GPa and 150GPa. I imported the geometry from a Catia v5 file where I worked in “mm” but in Ansys I work with SI (N,m,etc.) so I think that values are correct.
MESH (last week I asked here how to get it)
Plates: Hexa. Sweep, Material 1
Rivet: Tetra. Free, Material 2
Once I mesh the model, I merge the nodes which are in contact between the plates and the head/end of the rivet. Then I create 3 contact pair between volumes (plate1-rivet, plate2-rivet, plate1-plate2) with a friction coefficient of 0.3. Finally I apply a force directly to the nodes which there are in the edge in order to pull from the plates. I think I have to apply boundary constrains but I don’t know which are correct… I tried different constrains but any situation worked. (the rivet was fixed and just the plates were deformed, no converge, etc.) Any suggestion?
Thanks in advance.
Ripubcn
I’m new in Ansys and I need advises in order to model a tensile/shear test of a blind rivet. I’ve already spent a lot of time trying to get a solution but I achieved... anything!
Let me explain the main steps I do and just tell me if I miss any important step or if I do a big mistake… or just what you think about it, any comment would be welcomed!
You can see the geometry in the attached file.
ELEMENTS
SOLID45 for plates (3-D Structural Solid)
SOLID92 for rivet (3-D 10-Node Tetrahedral Structural Solid)
MATERIAL
Plates: 1. Linear elastic isotropic: E=1.5e5, poison=0.3
Rivet: 2. Linear elastic isotropic: E=2e5, poison=0.27
The materials are both steel 200GPa and 150GPa. I imported the geometry from a Catia v5 file where I worked in “mm” but in Ansys I work with SI (N,m,etc.) so I think that values are correct.
MESH (last week I asked here how to get it)
Plates: Hexa. Sweep, Material 1
Rivet: Tetra. Free, Material 2
Once I mesh the model, I merge the nodes which are in contact between the plates and the head/end of the rivet. Then I create 3 contact pair between volumes (plate1-rivet, plate2-rivet, plate1-plate2) with a friction coefficient of 0.3. Finally I apply a force directly to the nodes which there are in the edge in order to pull from the plates. I think I have to apply boundary constrains but I don’t know which are correct… I tried different constrains but any situation worked. (the rivet was fixed and just the plates were deformed, no converge, etc.) Any suggestion?
Thanks in advance.
Ripubcn