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  • Users: ThetaJC
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  1. ThetaJC

    Draft hinge

    Greetings, I was wondering if someone could tell me how to create a draft hinge curve on a solid based curved surface. For instance imagine I extruded an ellipse and wished to generate a draft on the curved portion of the extruded ellipse BUT I want to have the draft hinge follow the curved...
  2. ThetaJC

    PSD(G^2/Hz) to time history for fatigue analysis

    I have a question concerning converting PSD random vibration levels into a representative block of time history. I am able to write a software code that converts G's vs. Hz in the frequency domain back into a G's vs. time in the time domain by including a random phase number. I have a...
  3. ThetaJC

    3D Elasticity Theory

    Hello, I am looking for a book that has a good foundation on mechanics of materials of orthotropic and anisotropic materials. Specifically I am looking for a book which introduces characteristic matrices, stress tensors, strain tensors, etc. of anisotropic materials. My limited understanding...
  4. ThetaJC

    Modeling thin plates with solid elements

    Hello, I have a question about modeling thin plates with Solid elements. We typically deal w/ structures which have constituents of the geometry that are flat plates which transition into more traditional 3-D elements (not FE). An example would be a circuit card with a bonded...
  5. ThetaJC

    Problems applying boundary condition on 8 node shell element

    I am having two problems with Ansys. Problem #1 Imagine a simple rectangular plate with some semi-circular notches. The plate is 4"x8"x.1". I am using shell 93 element. My only load is a negative (tensile) line pressure that is being applied to one of the two short edges of...
  6. ThetaJC

    Confusion in Chandrupatla Textbook

    Previous threads have recommended this text as an excellent intro to FEA theory for engineers interested in wanting to begin developing a skill set, so I am covering the details in the third edition of the Introduction to Finite Elements in Engineering textbook. I am have a great deal of...
  7. ThetaJC

    Transient analysis

    I am executing a coupled field transient analysis using Ansys. I am applying a heat load and hoping to look at stress due to the coefficient of thermal expansion on the volume. I am recieving a warning that is as follows: Element 1 references undefined RSVX and PERX for material 1. Any...

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