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Everything posted by Dani_20

  1. Problem solve it, I have check and repair the wrong connections. Thank for you support. Robert, the mesh is not showed in this picture but is there. The nodes are also connected to the green structure with more than one node, but is not visible in the picture. Anyway thanks for you reply
  2. Problem solve it, Thank you However I have an additional problem, the right panel (Geometry, 1D...) moves to the right, as you can see in the picture. I have seen in another thread that for solving it, I have to delete same files (comand.tcl, hmmenu.set....) of the main directory. When I delete it, the first problem is solved it but disappear some information like plies (picture below) Could you tell me how could I solve this problem please? Thank you
  3. Hello, I am trying to perform a monocoque analysis with the suspensions system included. I follow the next steps: - I have introduced the nodes of each point and I have joined it with lines. - Then I have meshed the lines in an independent component with line mesh option - I have created nodes in monocoque holes (Where would be the attachment) - I have created a rigid (RBE2) between the bar and monocoque nodes - I have created a rigid (RBE2) between monocoque nodes and surrounding nodes - I have created a load on the monocoque and a constraint at the end of the suspension bar In the picture below, it can be seen the suspension modelation (There are some missing nodes due to visualitation problem) After that, I have tried to simulate and the following error appear: *** ERROR # 723 *** An invalid rigid element. This RBE2 is not connected with any structural element. RBE2 element id = 1041945 independent grid id = 1040450 Note: If this rigid element is also connected with other rigid elements, then this error means that there is rigid body mode or mechanism remained in this rigid element chain due to lack of connected structural elements. Could anybody help me please? Thank you
  4. Helo, I have perform a carbon fiber model with a suspension. I have inserted nodes to create the suspension system. But, sometimes when I save the file o I click return of one option, a great amount of nodes disappear and I have to start the whole process. Anybody knows what could be the problem? Thank you
  5. Hello, Firs of all, I have modified the length of the set to include more than the radius, to not stop in the limit. As you can see in the picture below: Anyway, The specific problem is that I want to introduce different thickness laminates in the same body. I have different sets to make it. But in this limit, with the radius, the laminate is wrong. In real mode, there is a chamfer in this place and the internal radius does'nt exist. I have tried to share with you the model. Altough the size is smaller than the maximum allowed, it give me an error
  6. Hello, I am trying to perform a carbon fiber monocoque analysis. I have checked the element normal and also the material orientation and are correct. However, when I make the laminate, I have the following problem in the radius: Anybody could help me, please? Thank you
  7. Really useful information!!! Thank you very much
  8. Hello, I want to simulate a composite sandwich, with a 3d core and insert, and 2d laminate. I have selected for the 3d core MAT9ORT for material and PSOLID for the property, but none of them allowed to me to introduced a failure criteria. How could I do it?
  9. Thank you for the information I have introduced the values and the simulation runs correctly
  10. Hello, I have been trying to simulate a sandwich panel with aluminium core, insert and carbon fiber laminate. I have introduced the following values for carbon fiber and core: I have also defined the failure criteria in properties as TSAI. I believe everything is correctly defined, however when I run the simulation the following error appears: *** ERROR # 144 *** CPYRA element 155981 has singular strain functions. Please check material data. Anybody could help me please?
  11. I have made a equivalence and the simulation runs correctly. Thank you It is mandatory to separate in two design spaces? Or it is possible to perform only with one volume?
  12. Hello, I have been trying to make an optimization of a hardpoint. I want to optimize the weight under load applied in grey zone . I have introduced all the parameters of the optimization (Response, Constraint, Objective and design variable). But the following error appears when I run the simulation: *** ERROR # 312 *** In static load case 1 the compliance is negative or large -1.96593e+012. Optimization/buckling analysis cannot be performed. due to possible rigid body mode. FEASIBLE DESIGN (ALL CONSTRAINTS SATISFIED). Could you help me with this error please, and also could you verify if the 3d model is correct, or I have to make only one volume? I attach the hm file as well Than you in advance Front_Damper_V3.hm
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