NastranIn HyperMesh, there are two types of load collectors for Nastran:•Specific load collectors with a card image•Generic load collectors without a card imageGeneric load collectors are used to collect loads and constraints for display purposes and to assign an ID to the loads. Specific load collectors are used for specialized loading cards, such as SPCADD, MPCADD, EIGRL, EIGB, EIGC, EIGP, EIGR, FREQ, FREQ1, LOAD, GRAV, RFORCE, and TEMPD. Specific load collectors have card images which can be edited to do the following: •Group other load collectors together for simultaneous application in a single subcase•Provide special information for a specific analysis type (such as modal analysis)General boundary conditions, such as loads and constraints, should not be collected into specific load collectors.When reading in a Nastran deck, loads that have the same SID are collected into the same load collector. If a load collector already exists in the database with the same SID, one of the following can occur:If overwrite is off (default), the new load collector’s ID is offset and all loads in that collector will have a new SID upon export.If overwrite is on, the new load collector replaces the existing load collector. The original load collector and the loads it contains are deleted.Supported CardsSolver DescriptionSupported ParametersHyperMesh NotesDAREADefines scale (area) factors for static and dynamic loads.Supported as constraintsDELAYDefines the time delay term in the equations of the dynamic loading functionSupported as constraintsDLOADDefines a dynamic loading condition for frequency response or transient response problems as a linear combination of load sets defined via RLOAD1 or RLOAD2 entries for freque...
