Possibe error in the mass matrix of body Crankshaft
Unbalanced total mass.
Total mass is: m_x: 0.17779
m_y: 0.17777
m_z: 0.17777
User action: (1) Define the (reduced) FE model in order to have the same
positive total mass for all three translations
(3) Do not constrain the FE model.