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  • Users: Struct71
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  1. Struct71

    Concrete material model

    Hi all, I am making a simple model which includes concrete and steel. For steel I am using non-linear plastic properties (TB,KINH...) and that works perfectly. This has worked perfectly also in other models. Now I also want to include concrete material in the model, including its non-linear...
  2. Struct71

    Bolt material (US vs the world)

    All, We are a globally operating company who order bolts (and other materials) regularly. Upon client request or upon availablity, we sometimes order UN size bolting and sometimes order metric size bolting. In USA we order UN bolting according to ASTM A193 or ASTM A320. In WOUSA we order...
  3. Struct71

    Making screenshots

    Hello, We have just moved from XP computers to W7 computers. On both we are running Ansys 12.1 classic. On the old computers I used to select graphics device W32C in the product launcher in order to make nice 50 color plots. With the command...
  4. Struct71

    Mathcad handbook: roark's formulas

    Hello all, We have been long time users of Mathcad in combination with an "electronic handbook" for Roark's formulas for stress and strain. The version we are currently using is Mathcad 14 in combination with a Roarks handbook with files dating february 1994. Now we are migrating to new...
  5. Struct71

    Mathcad handbook: roark's formulas

    Hello all, We have been long time users of Mathcad in combination with an "electronic handbook" for Roark's formulas for stress and strain. The version we are currently using is Mathcad 14 in combination with a Roarks handbook with files dating february 1994. Now we are migrating to new...
  6. Struct71

    Buckling in a plate model

    Hi, I am planning an analysis of a structure consisting of steel plates welded together. I am planning to use SHELL63 elements. Some plates will be loaded with compression. As we all know, these plates may buckle. This effect does not show in a perfectly elastic analysis. How can I include...
  7. Struct71

    Nonlinear analysis iteration graph display

    Hi everyone, I am doing a non-linear analysis with contacts, non-linear elasticity and large deflection in multiple steps. Upon solution I am getting a graph with "cumulative iteration number" on the X axis, convergence norm on the Y axis and a few lines jumping up and down. However, after a...
  8. Struct71

    Taper Lok flanges and BS5500/ASMEVIII calculation

    Hi All, I am about to check a Taper Lok flange. (ANSI B31.3) Normally we use simple code checking procedure with BS5500 (ASME VIII is similar). They contain a standard work form for RTJ and RF flanges. We are quite experienced with those. How about the taper-lok flanges with a tapered gasket...
  9. Struct71

    re-use of pretentioned bolts

    Hi, In my business it is common practice not to re-use bolts that are pretentioned/torqued. Now I have designed a clamp. The clamp uses 16 bolts of M36/1.5in size bolts. They are pretentioned to 40% of yield. Yes, it is a big thing. The clamp needs to be re-used a dozen times. Following...
  10. Struct71

    Peak stress in solid FE models

    Hi all, Does anyone have any guidelines or philosophies with respect to high peak stresses? There are several guidelines to for design stress and maximum allowable stress for classic "manual" calculation methods, but I can't find anything for FEM/FEA maximum. How to deal with peak stresses...
  11. Struct71

    Local peak stresses in solid models

    Hi, I am regularly doing analyses with SOLID45 elements and plastic material properties with TB,KINH defined. In many models I find very local peak stresses and strains. These are higher than allowable according to classic design codes (yield/1.5, tensile/2.35, yield*0.6). These codes do not...
  12. Struct71

    Nodes associated with keypoints

    Hi there, I have a keypoint in space and I want to put a node in its place and associate the new node with the keypoint. This is usefull for later NSLK operations and loading of the solid model. Anyone any idea how to do this? NKPT does not associate the node and KMESH needs a one-node element...

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