Why are the linearized stresses different in a 3D solid cylinder model compared to a 2D axisymmetric model?
January 25, 2023 at 7:34 amFAQParticipant
The stress linearization equations are described in the Ansys Help: Mechanical APDL Theory Reference Chapter 17: Postprocessing 17.4. POST1 – Stress Linearization or: https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v195/ans_thry/thy_post4.html The main point here is that there is a ‘thickness’ assumed (integral of -t/2 to t/2) in the calculations. If the material is at the centerline, this becomes invalid, which explains the ‘incorrect’ results you get since you are going from 0 (center) to radius. When we perform stress linearization, we are typically considering a thin structure, so we are aware from the centerline (see Figures 17.6 and 17.7 in the page above). We don’t perform stress linearization on a solid tube. Because of this, the solid tube case is not considered or discussed in the documentation. The application of stress linearization to an axisymmetric solid cylinder is not appropriate, so that is why it doesn’t match. If you had a 3D vs 2D axisymmetric hollow cylinder, and you are performing stress linearization through the thin-walled cylinder, the results should match more closely between 3D and 2D axisymmetric.
Introducing Ansys Electronics Desktop on Ansys Cloud
The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...
How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)
This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...
Introducing the GEKO Turbulence Model in Ansys Fluent
The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1 provides background information on the model and a...
Postprocessing on Ansys EnSight
This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.
- Does ECAD trace mapping support more than one type of trace material (usually copper) in the same layer?
- How to define frictional coefficient as a function of relative sliding velocity
- ANSYS Mechanical: Fatigue Crack Growth Analysis using SMART Crack Growth
- How can I understand Beam Probe results?
- Can the contact type (bonded or frictional) affect thermal results?
- What is the difference between secant and instantaneous coefficients of thermal expansion (CTE)?
- What does ambient temperature represent when using surface to surface radiation?
- What is pinball radius and does mesh size effect this value?
- Which time integration scheme is used in transient thermal analysis and how to change the scheme?
- Static Structural Analysis of a Rear Upright – Part 1