DMPRAT，DMPSTR,apdl

DMPRAT and DMPSTR are commands in ANSYS APDL (ANSYS Parametric Design Language) used for outputting the results of a structural analysis.

DMPRAT command is used to output the element stresses, strains, and other related quantities for selected elements. This command requires specifying the elements of interest and the output file name.

Syntax: DMPRAT, ELEM, FILE

DMPSTR command is used to output the nodal displacement and reaction values for selected nodes. This command requires specifying the nodes of interest and the output file name.

Syntax: DMPSTR, NODE, FILE

APDL (ANSYS Parametric Design Language) is the scripting language used by ANSYS, a software suite used for engineering simulations. APDL allows users to automate simulations by scripting repetitive tasks, customize the software, and perform complex simulations. The syntax used in APDL is similar to that of FORTRAN, making it easy for engineers to learn and use.