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About the stability criterion in Dynamic / Explicit analysis
My personal guess is that one studying the stability of dynamic explicit simulation has to distinguish two things : 1. The calculated stable time increment, that depends on mesh condition, materials constants such as density, elastic constants, and then the characteristic speed wave. 2. The...- mandriam
- Post #6
- Forum: Finite Element Analysis (FEA) engineering
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About the stability criterion in Dynamic / Explicit analysis
Hi all, Here is what SIMULIA customers help says. Q : In an Abaqus/Explicit analysis, is the loading taken into account in the calculation of the stable time increment? A : (The following applies to any version.) No, loading and/or load type is not directly considered in the calculation...- mandriam
- Post #5
- Forum: Finite Element Analysis (FEA) engineering
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About the stability criterion in Dynamic / Explicit analysis
Thank you much for your quick reply ! Okay, so if I understand, the time increment has to be small enough in the sense that a shockwave shouldn't have time to cross that element more than once during an incrementation. It's indeed clearer. Though, about the effect of boundary conditions on the...- mandriam
- Post #3
- Forum: Finite Element Analysis (FEA) engineering
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About the stability criterion in Dynamic / Explicit analysis
Dear all, Here is a question(s) about the stability criterion in a dynamic explicit analysis. In ABAQUS user's manual I red that the stability of an explicit procedure can be ensured if the time-increment is small enough. Then, as a limit criterion of stability, the given time-increment should...- mandriam
- Thread
- Replies: 6
- Forum: Finite Element Analysis (FEA) engineering
