nonlinear analysis
Understanding Complex Material Behavior – Plasticity Models
Plasticity modeling will increase solution accuracy and provide a better representation of the final stresses.
... ContinuedGetting Acquainted with Complex Relationships in FEA
The Structural Performance Engineer role was developed with SOLIDWORKS users in mind: powerful nonlinear static analysis in a more designer-friendly environment.
... ContinuedAssuming Linearity: Linear Static vs. Nonlinear
Background
SolidWorks has several different tools available for analyzing structures. Static analysis (discussed in my previous blog article) is available with the purchase of SolidWorks Simulation (included in SolidWorks Premium). Nonlinear analysis is available with the purchase of SolidWorks Simulation Premium (see Figure 1).
Figure 1 – SolidWorks Simulation study types
When a force is applied to a structure (a pencil, a building, a fixture, etc.) the internal pressure in the structure builds up. We call this internal pressure, stress. As stresses rise, the structure gets longer or shorter. We call this elongation, strain. When we run a Static analysis, we are assuming that the relationship between stress and strain is a simple one; we assume the relationship is linear. By making this assumption, we can potentially make an otherwise difficult or sometimes impossible problem very easy to solve.
However, this assumption isn’t all true. In reality, the relationship between stress and strain is never “perfectly” linear. But this assumption is close enough for many scenarios, and the amount of error it introduces may be negligible.
... Continued