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Download Chapter 2 EXECUTIVE CONTROL COMMANDS
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CDAMP2 User’s Reference Manual Bulk Data Entry CDAMP2 Defines a damping element and its damping value. Format and Example: 1 2 3 4 5 6 7 CDAMP2 EID B GID1 DOF1 GID2 DOF2 CDAMP2 16 2.98 32 Field 8 9 10 1 Contents Data Range Default EID Element identification number. [1] Integer>0 Required B The damping value. [2] Real 0.0 GIDi GRID or SCALAR point identification numbers. [3,4] Integer>0 GID1≠GID2 Required DOFi Single degree of freedom. [3,4] DOF Code Required Remarks: 1. Element identification numbers must be unique. 2. This single entry completely defines the element since no material or geometric properties are required. 3. The two connection points, (GID1,DOF1) and (GID2,DOF2), must be distinct. 4. If SCALAR points are used, the component number must be blank. If either pair (GID1,DOF1) or (GID2,DOF2) is blank, the damping element is placed between the indicated component and ground. The additions to damping matrix BGG are illustrated in the table below. Matrix Topology Two Connection Points Matrix Topology One Connection Point GID1,DOF1 GID2,DOF2 GID1,DOF1 GID1,DOF1 B -B GID2,DOF2 -B B UAI/NASTRAN GID1,DOF1 B BULK DATA 7-49 7 BULK
