General Mechanical

General Mechanical

Temperature dependent ANISOTROPIC Elasticity

    • John Doyle
      Ansys Employee
      Is it possible to input temperature dependent anisotropic elasticity into Engineering Data?n
    • Bill Bulat
      Ansys Employee
      From what I see in the online Help, it appears that as of 2020R2, there is no way of defining temperature dependent anisotropic elastic material property data. This appears to be the case at V19.0, as evidenced by Siebel 1792955841:nThe Engineering Data app does not currently support temperature dependent anisotropic elasticity.nnTemperature dependent anisotropic elasticity may, however, be defined in the MAPDL solver using APDL command. So the workaround is to use a command object that uses APDL. A MAPDL help section describes the procedure and command usage to accomplish this:nnDefine the elastic coefficient matrix via the TB family of commands:nInitialize the constant table (TB,ANEL or TB,ELAS,,,,AELS/AELF). Select the stiffness or flexibility form via the appropriate TBOPT value.nDefine the temperature (TBTEMP), or issue the TBFIELD command with TB,ELAS to input temperature or other supported field variables.nSpecify up to 21 constants (TBDATA).nnConstantt MeaningnC1-C6tTerms D11, D21, D31, D41, D51, D61nC7-C12tTerms D22, D32, D42, D52, D62, D33nC13-C18tTerms D43, D53, D63, D44, D54, D64nC19-C21tTerms D55, D65, D66nFor TB,ANEL, you can define up to six temperature-dependent sets of constants (via NTEMP = 1 through 6). Matrix terms are linearly interpolated between temperature points.nTemperature dependence via NTEMP on the TB,ANEL command is not supported for coupled-field analyses.nIn a piezoelectric analysis using coupled-field elements PLANE223, SOLID226, or SOLID227, you can define temperature-dependent elasticity coefficients via TB,ANEL (with TBOPT = 0) and tabular input on the TBDATA command:nTBDATA,STLOC,%tabname%nwhere tabname is the name of a table array parameter (*DIM) with TEMP as a primary variable. For more information, see Defining Linear Material Properties Using Tabular Input.n
    • Bill Bulat
      Ansys Employee
      n
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