RD-T: 3510 Cantilever Beam with Bolt Pretensioner

This tutorial demonstrates how to simulate a simple cantilever problem with a concentrated load at the free end, using Dynamic Relaxation (/DYREL) method to obtain a static solution.

Figure 1.

The model description is as follows:

UNITS

Length (mm)

Time (ms)

Mass (kg)

Force (kN)

Stress (GPa)

Simulation time

cantilever_start_0000.rad [0 - 40 ms]

Steps to setup this model

Fix the Cantilever Beam to the support with a 10 kN pre-tension. The bolt attains 10 kN in 10 ms and remains constant thereafter.

After pre-tension, a concentrated load of 0.72 kN is gradually applied at the free end of the beam from 10 ms to 40 ms and it remains constant thereafter.

Material Used

Elasto-plastic material /MAT/LAW2.

[Rho_I] Initial density

7.83e^-6 Kg/mm³

[E] Young's modulus

205 GPa

[nu] Poisson's ratio

0.29

[Iflag]

1

[a] Yield Stress

0.792 GPa

[UTS] Ultimate tensile stress

0.9771 GPa

[E_UTS] Engineering strain at UTS

0.0638

Input file

cantilever_start_0000.rad