The hardening moduli are coupled by the following relation (1D).
k = (1 / ft,x + 1 / fc,x)² ⋅ Ex ⋅ Ep / (Ex - Ep)
More information about hardening can be found in this technical article.
Considering Hardening in Orthotropic Plastic Analysis
In RFEM, orthotropic plastic analyses using the Tsai‑Wu plasticity criterion have been possible for quite some time now. The hardening modulus Ep,x or Ep,y can be used to consider the hardening of the material during the iterative calculation.
Author
Mr. Kuhn is responsible for developing products for timber structures, and provides technical support for our customers.
Links
Do you have any questions?
Length: 00:00:56 min
Length: 00:00:55 min
Length: 00:00:00 min
Length: 00:00:00 min
Length: 00:00:39 min
Length: 00:00:30 min
Length: 00:00:24 min
Length: 00:00:32 min
![Stress-Strain Diagram for Steel (Source: [1])](/en/webimage/009400/2418592/01-en-1-png.png?mw=512&hash=adf8ee01bc26d6fde7c887a1bccd8b62a114a86b)
Strain hardening is the material ability to reach a higher stiffness by redistributing (stretching) microcrystals in the crystal lattice of the structure. A distinction is made between the material isotropic hardening as scalar quantities or tensorial kinematic hardening.
Using the Timber Design add-on, timber column design is possible according to the 2018 NDS standard ASD method. Accurately calculating timber member compressive capacity and adjustment factors is important for safety considerations and design. The following article will verify the maximum critical buckling strength calculated by the Timber Design add-on using step-by-step analytical equations as per the NDS 2018 standard including the compressive adjustment factors, adjusted compressive design value, and final design ratio.
RWIND 2 is a program for generating wind loads based on CFD (Computational Fluid Dynamics). The wind flow numerical simulation is generated around any building, including irregular or unique geometry types, to determine the wind loads on surfaces and members. RWIND 2 can be integrated with RFEM/RSTAB for the structural analysis and design or as a stand-alone application.
This article describes the development of the Parametric FEM Toolbox and some of the possible workflows with this new tool.
The results of solid stresses can be displayed as colored 3D points in the finite elements.
.png?mw=512&hash=ea9bf0ab53a4fb0da5c4ed81d32d53360ab2820c)
The number of degrees of freedom in a node is no longer a global calculation parameter in RFEM (6 degrees of freedom for each mesh node in 3D models, 7 degrees of freedom for the warping torsion analysis). Thus, each node is generally considered with a different number of degrees of freedom, which leads to a variable number of equations in the calculation.
This modification speeds up the calculation, especially for models where a significant reduction of the system could be achieved (for example, trusses and membrane structures).
This section offers useful information about general structural analysis and design as well as Dlubal Software programs.
Infotainment
Display extended strains of members, surfaces, and solids (for example, the important principal strains, equivalent total strains, and so on) in the Project Navigator - Results in RFEM as well as in Table 4.0.
For example, you can display governing plastic strains when performing the plastic design of connections with surface elements.
Where can I find my customer number in RFEM or RSTAB?
Is it possible to define member nonlinearities for beam members?
For example, can I define a member that absorbs all internal forces, except for the compressive axial forces?
For example, can I define a member that absorbs all internal forces, except for the compressive axial forces?
How can I exchange data between RFEM 5 / RSTAB 8 and Tekla Structures 2023?
I get a warning that a file created with RFEM, RSTAB, or RSECTION contains a virus or a Trojan horse. What should I do?
I design pipelines using the RF-PIPING Design add-on module. I have created a new prestress load case and loaded the piping with longitudinal displacement.
Is it possible to add this new load case to combinations that are generated automatically?
Is it possible to add this new load case to combinations that are generated automatically?
My Surface Book is recognized as a "Hyper V" virtual machine, so my local license does not work. What can I do?
.jpg?mw=350&hash=8f312d6c75a747d88bf9d0f5b1038595900b96c1)
