Ansys Learning Forum Forums Discuss Simulation General Mechanical Plasticity: Extract nodal solution from specific steps, substep Reply To: Plasticity: Extract nodal solution from specific steps, substep

Debanjan Debnath
Ansys Employee

Hello,

Stress is initially calculated at the integration points within each element and subsequently interpolated to nodes through linear extrapolation. When multiple elements (e.g., three) share a node, each element provides an extrapolated stress value at that node (such as σ1, σ2, σ3), referred to as unaveraged stress. With the average display option enabled, the stress value shown at the node is the mean of these extrapolated values, calculated as: σ1 + σ2 + σ3 3 .

For midside nodes, you may be required to use input computeMidSideNodes = True as shown in the figure below.

The following sample script might be helpful. Where ENS stores the elemental-nodal result.

analysis = Model.Analyses[0]
reader = analysis.GetResultsData()
elem_id = 32
Sp = reader.GetResult('PRIN_S')
Sp.SelectComponents(['1'])
ENS = Sp.GetElementValues([elem_id], True)

Thank you.