3. Modeling A

3.1. Characteristics of modeling

The model is composed of 10 Euler straight beam elements.

3.2. Characteristics of the mesh

It consists of 10 POU_D_E elements.

3.3. Tested sizes and results

System eigenvalue (\(K+\lambda {K}_{G}\)) \(X\mathrm{=}0\):

	Reference	Error
\(\lambda\)	170.701	0.01

3.4. note

Since \({p}_{c}=\lambda \rho Sg\), (\(\rho Sg\) represents linear pre-stress), we have as a critical load: \({p}_{c}=\mathrm{1300,84}{\mathrm{N.m}}^{-1}\).