{"id":305383,"date":"2023-09-07T19:25:14","date_gmt":"2023-09-07T19:25:14","guid":{"rendered":"\/forum\/forums\/topic\/questions-about-the-general-procedure-of-fea\/"},"modified":"2023-09-07T19:45:18","modified_gmt":"2023-09-07T19:45:18","slug":"questions-about-the-general-procedure-of-fea","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/questions-about-the-general-procedure-of-fea\/","title":{"rendered":"Questions about the general procedure of FEA"},"content":{"rendered":"

Hello!<\/p>\n

My understanding is the general procedure of FEA works something like this (at least for some types of problems): the equations in FEA are written in terms of the displacements (something like Ku=F, where K is the global stiffness matrix created though summing many local element stiffness matrices, and F is a nodal forces vector), and the displacements are first solved for.  Then the strain matrix (sometimes called the B matrix) is used to calculate strains from the displacement results, and matrix representing the relationship between stress and strain (called the D matrix in the theory reference) is used to calculate the stresses from the strains.<\/p>\n

Does this seem like a correct high-level assessment of the FEA procedure?<\/p>\n

Does the overall procedure change for transient or nonlinear analyses? <\/p>\n

Thank you!<\/p>\n","protected":false},"template":"","class_list":["post-305383","topic","type-topic","status-closed","hentry","topic-tag-ansys-structural","topic-tag-equation","topic-tag-finite-element-analysis","topic-tag-theory"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t