Reference problem ===================== Geometry --------- The test is carried out on the hardware point, using the SIMU_POINT_MAT command. Material properties ------------------------ +------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |**Isotropic elasticity (keyword** ELAS_FO **)** |**Eigencreep: properties of Kelvin chains (keyword** **** BETON_GRANGER ****) ** | +------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ |:math:`E=30000\mathit{MPa}` :math:`\nu =\mathrm{0,2}` :math:`\alpha ={10}^{-5}` |:math:`{J}_{1}=\mathrm{3,226}{10}^{-5}{\mathrm{MPa}}^{\text{–1}}` :math:`{J}_{2}=\mathrm{2,6}\cdot {10}^{-7}{\mathit{MPa}}^{–1}` :math:`{J}_{3}=\mathrm{2,7}\cdot {10}^{-6}{\mathit{MPa}}^{–1}` :math:`{J}_{4}=\mathrm{2,71}\cdot {10}^{-6}{\mathit{MPa}}^{–1}` :math:`{J}_{5}=\mathrm{8,08}\cdot {10}^{-6}{\mathit{MPa}}^{–1}` :math:`{J}_{6}=\mathrm{1,808}\cdot {10}^{-5}{\mathit{MPa}}^{–1}` :math:`{J}_{7}=\mathrm{1,901}\cdot {10}^{-5}{\mathit{MPa}}^{–1}` :math:`{J}_{8}=\mathrm{1,139}\cdot {10}^{-5}{\mathit{MPa}}^{–1}`|:math:`{\tau }_{1}=2\cdot {10}^{-3}\text{jours}` :math:`{\tau }_{2}=2\cdot {10}^{-2}\text{jours}` :math:`{\tau }_{3}=2\cdot {10}^{-1}\text{jours}` :math:`{\tau }_{4}=2\text{jours}` :math:`{\tau }_{5}=2\cdot 10\text{jours}` :math:`{\tau }_{6}=2\cdot {10}^{2}\text{jours}` :math:`{\tau }_{7}=2\cdot {10}^{3}\text{jours}` :math:`{\tau }_{8}=2\cdot {10}^{4}\text{jours}`| +------------------------------------------------------------------------------------------------------+ + + |**Aging function** **(keyword** V_ BETON_GRANGER **)** | | | +------------------------------------------------------------------------------------------------------+ + + |:math:`k({t}_{c})=\frac{{\text{28}}^{\mathrm{0,2}}+\mathrm{0,1}}{{t}_{c}^{\mathrm{0,2}}+\mathrm{0,1}}`| | | +------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ **Table** 1.2-1 The **desorption function** (to be filled in under the keyword ELAS_FO) describes the appearance of the relative humidity :math:`h` as a function of the water content :math:`C` (which corresponds to the Code_Aster control variable SECH). * For modeling A, this function is linear if :math:`50\mathit{kg}/{m}^{3}\le C\le 100\mathit{kg}/{m}^{3}` and constant outside these limits; humidity varies between the initial value :math:`{h}_{0}=1` and the final value :math:`{h}_{f}=\mathrm{0,5}` and, as shown in the. * For B modeling, it is constant and equal to :math:`h=1\text{(ou 100\% )}` .. image:: images/100002010000027F000001251673C9291AC5B199.png :width: 3.9689in :height: 1.8193in .. _RefImage_100002010000027F000001251673C9291AC5B199.png: Figure 1.2-1 Boundary conditions and loads ------------------------------------- * **Mechanical limit conditions**: uniaxial traction. The constraint imposed (component SIZZ) is equal to :math:`{\sigma }_{\mathit{zz}}={\sigma }_{0}=10\mathit{MPa}`. Charging is maintained for :math:`1` years. * **Temperature**: a constant temperature of :math:`T=20°C` is uniformly imposed on the structure, equal to the reference temperature. As a result, thermal shrinkage is zero. * **Water Content**: * For modeling A, this function has a linear appearance. It is worth :math:`{C}_{0}=100` at the initial time :math:`{t}_{0}=0` and :math:`{C}_{f}=50` at the final time :math:`{t}_{f}=365` days. * For B modeling, it is constant and equal to :math:`h={h}_{0}=1\text{(ou 100\% )}`