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Recent content by valbe

  1. V

    universal joint

    Hello. I need to connect bar-a and bar-b so that each is free to rotate around global x or z, respectively - bars are modelled as wires. I thought to use a revolute connector between each bar and a coincident RP, then to connect the two RPs via a universal joint connector. However, abaqus...
  2. V

    Warning: New nodes or elements have been added to the mesh in instance [xxx] ' but are not included in any assembly sets or surface

    Thanks, FEA way for the query. I am working with dependent instances. However, when I partition the part, all the wires created between endpoints of different instances of the same part and other parts are lost. They are many (> 1000). Unfortunately, it is my first significant FEA model and I...
  3. V

    Warning: New nodes or elements have been added to the mesh in instance [xxx] ' but are not included in any assembly sets or surface

    Hello. I have a complex, modular assembly of instances. After setting it up, I needed to partition the instances further. I did it, and, once in the assembly module, I got the message "Warning: New nodes or elements have been added to the mesh in instance [xxx] ' but are not included in any...
  4. V

    multiple bars - connection

    Thank you. Then I will proceed this way. I saw a nice tutorial about setting linear equation constraints on trusses indeed. It may be easier to avoid errors that way.
  5. V

    multiple bars - connection

    Join + revolute, with the revolute axis being either x or z according to the bar involved
  6. V

    multiple bars - connection

    Hello. I need to make a connection between multiple - eight - bars. Four bars are on the xy plane and must be free to rotate around the z-axis. Four bars are on the yz plane and must rotate around the x-axis. Therefore, I thought that I could neither set them as trusses nor apply a rotation...
  7. V

    Tensioned element and loads

    Negative eigenvalues and zero pivot... I tried with other connectors as well. The MPC still gave me negative eigenvalues. I eventually solved it by deleting the truss element altogether and modeling the cable as one long connector element type axial :)
  8. V

    Tensioned element and loads

    Hello. I am new to Abaqus and with a somehow unusual problem. I have a horizontal cable modelled as wire, element type truss T3D2, no compression material, to which I applied pretension stress in the initial step. The cable is connected to (almost vertical) beams at each of its endpoints via...
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