Ansys An Internal Solution Magnitude Limit Was Exceeded -

Newton-Raphson diverged when stiffness became negative. Displacement DOF at crown exceeded 1e7 mm.

At iteration (i), ([K_T^i]) is the tangent stiffness matrix, (F_int^i) the internal force vector. The solution update is: ansys an internal solution magnitude limit was exceeded

where (R) is the residual force vector. As ( \lambda_\min ) approaches zero, even a tiny residual yields enormous displacement increments—triggering the error. Newton-Raphson diverged when stiffness became negative

[ u^i+1 = u^i + \Delta u^i ]

[ [K_T^i]\Delta u^i = F_ext - F_int^i ]