Can You do Finite Element Analysis by Hand?

By | March 9th, 2019|• Linear Analysis, • Structural Steel, FEA: Basics, FEA: Intermediate, FEA Topics:, Structural Design Topics:|

It's the beginning of 2009. I'm sitting in one of the lectures of my Ph.D. program. Finally, we will start to learn about Finite Element Method! My company is slowly developing, and I'm really hopeful that this will allow me to spread my wings! And then professor says: "let's start with basic matrix operations"... You [...]

How to Interpret FEA Results?

By | January 17th, 2019|• Linear Analysis, • Structural Steel, FEA: Basics, • Nonlinear Analysis, FEA: Intermediate, • Post Processing, FEA Topics:, Structural Design Topics:|

Interpreting analysis outcomes is not simple. Even if you already have proper values from your FEA analysis, still you need to decide how to interpret FEA results. Let's take a closer look at how to approach this task! Firstly let's wonder how to interpret FEA results? In structural design, you have to perform several checks. Firstly, [...]

Buckling length in sway and non-sway structures

By | August 31st, 2017|• Structural Steel, • Stability, FEA: Intermediate, • Linear Buckling, FEA Topics:, Structural Design Topics:|

One of the few difficult things about buckling lengths is, that you need to know if your structure is a "sway" structure or a "non-sway" structure. Commonly the simple check is made with displacements, but unfortunately, it may lead to serious mistakes! Why should you care about sway and non-sway system Firstly, I want to [...]

Design your silos with FEA – it pays!

By | February 28th, 2017|• Structural Steel, • Nonlinear Analysis, • Stability, FEA: Intermediate, • Post Processing, FEA Topics:, Case Studies, Structural Design Topics:, FEMAP|

Designing steel silos with analytical approach always yields very conservative results. Nonlinear Finite Element Method allow for great optimization of those structures (and other shell structures as well!). I will discuss this based on a silo I have recently designed. […]

Connection rigidity: 5 things you need to know!

By | February 13th, 2017|• Structural Steel, • Connections, Structural Design Topics:, RFEM|

Most engineers use a popular approach: connection is either a hinge or a rigid one. This is usually not the case. Just as with many other engineering problems in certain cases we simplify the reality by assuming perfect conditions (i.e. hinge). It is crucial to understand when such assumptions are incorrect, as this may lead [...]

Critical bending moment: How to calculate it with numerical analysis (in RFEM)

By | May 29th, 2016|• Structural Steel, • Stability, FEA: Intermediate, • Linear Buckling, FEA Topics:, Structural Design Topics:, RFEM|

Lateral torsion buckling (LTB) is a very dangerous phenomenon, that can easily cause the collapse of a poorly designed beam. In civil engineering codes, the critical bending moment is crucial in the proper design of bent beams susceptible to LTB, as it allows for slenderness calculation.  In “typical” cases everything is ok since code equations [...]

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