CM2 FEM® Engines /release 4.2.2

rigid_body_lin, rigid_body_gNL

• Reduced memory usage with numerous slave nodes.

solver_modal

• Crash with mass_matrix_only_flag = true (regression in 4.2.1).

solver_modal, solver_modal_gyroscopic, solver_buckling_Euler

• Convergence issues (regression in 4.2.1).

contact_cylinder<, contact_sphere

• Geometric stiffness no longer disabled in case radius < 0.
  For stability reasons, still disabled in case radius > 0.
• Convergence issues in case of prescribed displacements (with solver_static_Newton).

rigid_body_lin, rigid_body_gNL

• The penalty factor used in these elements could be too high and cause noticeable numeric errors and convergence issues.
  They are now more adapted and numeric errors are reduced.

rigid_body_gNL

• Convergence issues in case of prescribed displacements (with solver_static_Newton).
• Convergence issues with solver_static_Newton (the geometric stiffness was disabled).

solver_Z_impedance

• Initial solution data_type::initial is no longer considered as periodic.
  It’s used only now in the computation of the tangent stiffness matrix with non-linear models.
• Dirichlet conditions (prescribed values), thermal loads and pre-strains are no longer not considered in RHS.