ADAMS中有限元介绍fe-part.pdfVIP

Welcome to the FE Part 1 Welcome to the FE Part 2 FE Part Introduction Introduction The FE Part is a wholly Adams-native modeling object with inertia properties and is accurate for very large deformation cases (that is, geometric nonlinearity) of beam-like structures. The FE Part differs from the linear flexible body option within Adams/Flex in two significant ways: 1) it has the ability to accurately represent large deformations which the linear modes approach cannot and 2) its modeling does not require an FEA-produced file like the modal neutral file (MNF). The FE Part also differs from the beam force element in that it possesses inertia properties. The inertia properties are specified using symmetric, consistent mass matrix which remains constant. For a more detailed comparison with other methods of modeling geometric nonlinearity within Adams click here. The FE Part has below formulation options: • 3D Beam: A three-dimensional fully geometrically nonlinear representation useful for beam-like structures. Accounts for stretching, shearing, bending, and torsion. • 2D Beam (XY, YZ, or ZX): A two-dimensional geometrically nonlinear representation useful for beam-like structures whereby the centerline of the beam can be assumed constrained to a plane parallel to the models global XY, YZ or ZX plane. The 2D Beam can stretch or bend in plane. The 2D Beam will solve faster than the 3D Beam. These formulation options are based on an MSC-authored adaptation of Absolute Nodal Coordinate Formulation (ANCF). The Adams FE Part implementation differs from pure ANCF primaril