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PFVIBAT—a computer program for plane frame vibration analysis by an exact method
Author(s) -
Åkesson Bengt Å.
Publication year - 1976
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620100603
Subject(s) - vibration , rotary inertia , bending moment , moment of inertia , structural engineering , displacement method , displacement (psychology) , modal analysis , differential equation , inertia , rigid frame , shear (geology) , modal , computer program , physics , frame (networking) , classical mechanics , mathematics , mathematical analysis , engineering , computer science , acoustics , geology , materials science , psychology , telecommunications , polymer chemistry , psychotherapist , petrology , operating system
The described program PFVIBAT uses the exact displacement method to perform free and forced vibration analysis entirely within the differential equation theory of beams thus avoiding assumed modes and lumped masses. The frame may contain rigid bodies. Clamped, hinged, guided and rolling connections are allowed for. Consideration of rotatory inertia, shear deformation and second‐order bending moments and shear forces as caused by static axial load is optional. Eigenfrequencies and modal masses are calculated with an accuracy that may be specified. Displacement and moment modes are plotted. Transient vibrations are studied.