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004880
Stefan Hoffmann, M.Sc.
2020-12-18

FE Mesh of Conical Membrane

Why does the FE mesh of my conical membrane look angular after the form-finding?

Answer:

This is probably due to the size of the FE elements you have defined.

For a rough FE mesh of 1 m, the shape looks angular.

FAQ|004880
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FAQ 004880 | Why does the FE mesh of my conical membrane look angular after the form-finding?
Form-Finding FE Mesh 1 m
Form-Finding FE Mesh 1 m

For a fine FE mesh of 0.1 m, the shape looks smoother.

Form-Finding FE Mesh 0.1 m
Form-Finding FE Mesh 0.1 m

Author

Mr. Hoffmann provides technical support to Dlubal Software customers and is responsible for the coordination of all technical inquiries and activities.

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Material model Anisotropic | Damage, nonlinear behavior, concrete and reinforced concrete

The "Nonlinear Material Behavior" add-on includes the Anistropic | Damage material model for concrete structural components. This material model allows you to consider concrete damage for members, surfaces, and solids.

You can define an individual stress-strain diagram via a table, use the parametric input to generate the stress-strain diagram, or use the predefined parameters from the standards. Furthermore, it is possible to consider the tension stiffening effect.

For the reinforcement, both nonlinear material models "Isotropic | Plastic (Members)" and "Isotropic | Nonlinear Elastic (Members)" are available.

It is possible to consider the long-term effects due to creep and shrinkage using the "Static Analysis | Creep & Shrinkage (Linear)" analysis type that has been recently released. Creep is taken into account by stretching the stress-strain diagram of the concrete using the factor (1+phi), and shrinkage is taken into account as the pre-strain of the concrete. More detailed time step analyses are possible using the "Time-Dependent Analysis (TDA)" add-on.

Feature 002918 | Determination of Required Longitudinal Reinforcement for Direct Crack Analysis

In the Concrete Design add-on, you can determine the required longitudinal reinforcement for the direct crack width analysis (w k).

Feature 002920 | Automatic Function of Longitudinal Reinforcement for Members

For the design of reinforced concrete members, there is the option to automatically determine the number or diameter of rebars.

Feature 002876 | Reinforcement Results in Tables by Design Situation

For concrete design, you can display the reinforcement results in tables separately by design situation.

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