2. Benchmark solution

2.1. Calculation method used for the reference solution

Since the movement of « solids » is imposed, the reference solution (in motion) is the imposed movement.

The reference solution is therefore accurate (in small rotations).

2.2. Benchmark results

In 2D:	\(U(C)=(\begin{array}{}1.999\\ 3.001\end{array})\)	\(U(\mathrm{E2})=(\begin{array}{}2.\\ 3.\end{array})\)
In 3D:	\(U(L)=(\begin{array}{}1.999\\ 3.002\\ 3.999\end{array})\)	\(U(P)=(\begin{array}{}1.998\\ 3.001\\ 4.000\end{array})\)	\(U(\mathrm{Q3})=(\begin{array}{}2.\\ 3.\\ 4.\end{array})\)

2.3. Uncertainty about the solution

Exact solution.