Download TOCHNOG PROFESSIONAL User's manual Version 22
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factor as specified by group materi plasti bounda or group materi plasti mpc. The limit of the shear stress follows the classical mohr-coulomb law for interfaces with the specified phi, c and phi flow (and multiplied by the reduction factor). This group materi plasti mohr coul reduction can be combined with the group materi plasti mohr co record. Then the shear stresses are limited both by the interface law from group materi plasti mohr coul re and also by the continuums law from group materi plasti mohr coul direct. For all soil elements at which the reduction factor is not active, this group materi plasti mohr coul reductio will be neglected. See also group materi plasti mohr coul reduction method. 7.676 group materi plasti mohr coul reduction method index dir This record works i.c.w. group materi plasti mohr coul reduction. With this record you can specify the normal direction dir for the structure. This dir can either be -x or -y or -z. By example, for a vertical pile in 2D you should specify -x as normal direction. Default, if group materi plasti mohr coul reduction method is not specified, the dir is -x. 7.677 group materi plasti mpc index switch Same as group materi plasti bounda, but now for mpc ... records however. If you set switch to -yes, the reduction factor will be applied if there is any mpc at the node of an element. See also group materi plasti mpc factor. 7.678 group materi plasti mpc factor index factor Same as group materi plasti bounda factor, but now for group materi plasti mpc however. 7.679 group materi plasti pressure limit index pressure limit To prevent plasticity problems near free surfaces, you can require that Tochnog neglects plasticity laws if the pressure exceeds pressure limit. This option is not available for hypoplasticity laws, since for these laws nonlinear elasticity and plasticity are defined by one law, so the plasticity part cannot be suppressed by itself. 7.680 group materi plasti tension index sigy Yield data for tension plasticity. The index specifies the element group, see element group. Condition: materi strain plasti should be initialized. It is encouraged to use group materi plasti tension direct instead, which tends to give more stable calculations. 246