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FAQ 004243 | Is it possible to define different stiffnesses for tension and compression between two surfaces in the diagram of a line release?
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Is it possible to define different stiffnesses for tension and compression between two surfaces in the diagram of a line release?Answer
The definition of different properties in the tension and compression area of a line release is possible as shown in Figure 01.However, it is necessary to consider a special feature property of the released surface in the case of a line release between two surfaces. In the attached model, an identical line release is defined. In the left model, the bottom Surface 1 is released, but in the right model, the top Surface 4 is released. For both surfaces, the local y‑axis of the surface is aligned parallel to the global z‑axis.
The deformation diagram results in completely different deformations for both models.
In the left model with the lower released surface, the pressed area is very soft. For this axis orientation, the reaction force of Surface 2, pressing on Surface 1 from above is very soft.
In the model on the right, the upper surface is released, so that the reaction force of Surface 4 pressing on Surface 3 from above is very rigid.
Keywords
Dlubal FAQ Reaction force Action force Diagram Stiffness Frequently Asked Question FAQ about Dlubal Question and Answer about Dlubal
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For relatively large or relatively small surfaces, it can happen that the automatically created result values do not fit the model: In case of large surfaces, there can be too much result values, in case of small surfaces, too few.
Material Model Orthotropic Masonry 2D
The material model Orthotropic Masonry 2D is an elastoplastic model that additionally allows softening of the material, which can be different in the local x- and y-direction of a surface. The material model is suitable for (unreinforced) masonry walls with in-plane loads.
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