The fields DEPL and SIEF_ELGA are calculated even if we do not re- quest it in CALC_CHAMP. Calculation and/or printing of any field can be restricted to one or more of its component with NOM_CMP. Field DEPL means displacement. The field SIEF_ELGA means SIgma (stress) or EFfort (force or mo- ment), per ELement at GAuss points. The field SIEF_ELNO means SIgma (stress) or EFfort (force or mo- ment), per ELement at NOde. With due allowance to stress or effort these two fields are meaningful whatever the element. For beams, the field SIEF_ELNO means EFfort (force or moment), per ELement at NOdes. From a practical point of view it contains the normal force, N, the 2 shear forces, VY and VZ, and the 3 moments, MT, MFY and MFZ in the beam, in its LOCAL axis 1 . The field EFGE_ELNO means EFfort (force or moment), GEneralised, per ELement at NOdes, in the element local axis, it contains the same components as SIEF_ELNO and for any practical purpose shows the same things. The same applies at GAuss points for EFGE_ELGA. For beams 2 , the field SIPO_ELNO means Stress (SIgma POutre), per ELement at end NOdes. This is the stress produced by any of the three forces and moment defined in SIEF_ELNO if they were acting alone on the beam section. For example SMFY is the stress due to the single bend- ing moment MFY, it is computed from MFY above and the beam charac- teristics, defined in AFFE_CARA_ELEM...POUTRE 3 . SIPM_ELNO 4 (SIgma Poutre Maximum) gives the component of the stress in the direction of the last 2 characters of the component name. The most important SIXX, can be seen as the extremum, maximum or 1 For plates it would be NXX (with the unit of N/mm), NXY, NXY, MXX... in the local element axis. And for 3D elements, pure stresses SIXX, SIYY, SIZZ, SIXY... in the global axis . 2 And for beams only, this field is restricted to beams. 3 Here, SMFY = MFY IY × RZ. 4 Same remark as above.