{"id":294760,"date":"2023-07-25T16:02:51","date_gmt":"2023-07-25T16:02:51","guid":{"rendered":"\/forum\/forums\/topic\/highly-distorted-error\/"},"modified":"2023-07-25T16:02:51","modified_gmt":"2023-07-25T16:02:51","slug":"highly-distorted-error","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/highly-distorted-error\/","title":{"rendered":"Highly distorted error"},"content":{"rendered":"

I have a door and a hinge assembly, to which I have applied a joint load. The hinge is bolted to a pillar which is defined by Body-ground connection, while the door is connected to the hinge in bod-body fixed connection type. The hinge and the bush is connected via revolute joint to ascertain the revolution. <\/p>\n

Boundary conditions: <\/span><\/strong><\/p>\n

    \n
  1. Body-body joints:<\/span><\/li>\n
      \n
    1. Fixed joints given between ‘Hinge and pillar’ and ‘hinge bush and door’.<\/span><\/li>\n
    2. Revolute type of joint given between hinge bush and hinge.<\/span><\/li>\n
    3. Hinge pin is suppressed.<\/span><\/li>\n<\/ol>\n
    4. Body – ground joint:<\/span><\/li>\n
        \n
      1. The pillar is grounded using ‘Body-ground’ joint.<\/span><\/li>\n
      2. Mesh size: 2mm, refined at hinge and bush.<\/span><\/li>\n
      3. Material assigned: Structural steel for all.
        <\/span><\/li>\n<\/ol>\n<\/ol>\n

        Detailed description:<\/span><\/strong><\/p>\n

          \n
        1. The similar analysis is carried using rigid body dynamics, however, we cannot get stress information, hence we used staic structural analysis.<\/span><\/li>\n
        2. Static analysis was carried initially using the large deflection ‘off’. However, there was unrealistically large deformation. Also the stress values were large.<\/span><\/li>\n
        3. Hence, I turned on large deflection. However, it creates error, “distorted element”. I checked the element using “Mesh by ID” option. For every analysis, the distorted element. was in the hinge bush. <\/span><\/li>\n
        4. If I tend to refine the mesh, I get not enough memory error.\n

          <\/span><\/li>\n<\/ol>\n

          Action taken for above errors:<\/span><\/strong><\/p>\n

            \n
          1. Applied load with large number of sub steps i.e. keep auto time stepping turned on with 20,10 and 500 as initial, min and max sub steps.<\/span><\/li>\n
          2. Turned on iterative solver for convergence errors.<\/span><\/li>\n
          3. Simplified the hinge bush model by removing the holes.<\/span><\/li>\n<\/ol>\n

            In spite of taking above actions, the error persists. <\/p>\n

            Error which shows distortion in part
            \"\"
            \"\"<\/p>\n

            If the mesh is refined, then less memory error.
            \"\"<\/p>\n

            Description of parts
            \"\"<\/p>\n

            Any help is highly appreciated, as the above analysis is timeline critical<\/p>\n","protected":false},"template":"","class_list":["post-294760","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t