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  1. futura22

    *IMPERFECTION command for buckling analysis

    Hello everyone... I am performing a postbuckling analysis on a compressed cylinder. I've done a linear buckling analysis on perfect cylinder to find the eigenvalues, then would like to use the *imperfection command to introduce the imperfections on the cylinder. My question is, which line...
  2. futura22

    Introducing imperfection

    Currently i am running a load-displacement analysis for buckling of cylindrical shells. The first step is introducing imperfection on a perfect cylinder and requires combinations of eigenmodes from linear eigenvalue analysis in order to find the critical loads. My problem is I do not know how...
  3. futura22

    Concentrated force

    Does anyone know the unit of concentrated force? Is it force per unit length? Thanx
  4. futura22

    choosing the right eigenvalues for buckling analysis

    hello everyone... I am running an eigenvalue buckling analysis from input file from abaqus documentation. The outcome of the linear analysis is series of eigenvalues and they will give me the magnitude of buckling load by simply multiplying with the applied load. my problem is how i am going...
  5. futura22

    Problem running eigenvalue buckling analysis from input file !!!

    Hello everyone, I managed to run eigenvalue buckling analysis of simply supported cylindrical shells of S4R5 element using ABAQUS. The problem is my solutions do not give the same value of buckling stresses as given in the documentations. Is there a problem in the input file or I just...
  6. futura22

    Buckling of shells- critical buckling mode

    I hv just run an input file of eigenvalue buckling analysis from abaqus documentation website using ABAQUS CAE. Basically there will be two critical buckling mode of n, circumferential full wave and m, longitudinal half wave corresponds to the model. My question is how i am gonna determine the...

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