Question about meshing for two intersecting solids
Posted: Sat Dec 21, 2019 8:08 pm
Hello everyone,
I have a problem for the mesh of the hook spring. The hook spring has generally a initial stress inside the coils, which means it will not suffer from any deformation until the external force is greater than the total internal force. Now this initial stress need to be simulated with the FE-Analysis.
My plan for the simulaiton at the moment ist to make the pitch of the spring negativ. Under this circumtance there is no initial stress in the coils any more, a situation that can not be reached in the real life since the coils of the hook spring cannot "go inside" to the other in reality. Then the boundary condition of displacement will be added, making it reach its original length, so that the value of the initial stress could be calculated.
However, in this case the solids of the coils will encounter intersection, making it difficult for generating volume mesh. I've already tried the Netgen and Gmsh in FreeCAD, no volume mesh can be generated.
I've learnd that the function of partrition in Salome could deal with this situation. Is there a similar function in FreeCAD that could handle it? Of course it is better if everything could be done in just one software nicely...
Thanks a lot:)
I have a problem for the mesh of the hook spring. The hook spring has generally a initial stress inside the coils, which means it will not suffer from any deformation until the external force is greater than the total internal force. Now this initial stress need to be simulated with the FE-Analysis.
My plan for the simulaiton at the moment ist to make the pitch of the spring negativ. Under this circumtance there is no initial stress in the coils any more, a situation that can not be reached in the real life since the coils of the hook spring cannot "go inside" to the other in reality. Then the boundary condition of displacement will be added, making it reach its original length, so that the value of the initial stress could be calculated.
However, in this case the solids of the coils will encounter intersection, making it difficult for generating volume mesh. I've already tried the Netgen and Gmsh in FreeCAD, no volume mesh can be generated.
I've learnd that the function of partrition in Salome could deal with this situation. Is there a similar function in FreeCAD that could handle it? Of course it is better if everything could be done in just one software nicely...
Thanks a lot:)