1. Reference problem#
1.1. Geometry#
The geometry of the problem is shown below:

The assembly details are as follows:

1.2. Property of materials#
\(E=2{10}^{11}\mathit{Pa}\) \(\nu =\mathrm{0,3}\) \(\alpha =\mathrm{1,6}{10}^{-5}\)
1.3. Initial conditions, boundary conditions, and loading#
A temperature field that varies over time is imposed.
The head of the screw is « hooked » into the reinforcement by linear relationships and then a relative displacement is imposed on it to represent the tightening.