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DYNALIST II. A Computer Program for Stability and Dynamic Response Analysis of Rail Vehicle Systems. Volume III. Technical Report Addendum.

PB258193

Publication Date	1976
Personal Author	Bronowicki, A.; Hasselman, T. K.
Page Count	74
Abstract	Several new capabilities have been added to the DYNALIST II computer program. These include: (1) a component matrix generator that operates as a 3-D finite element modeling program where elements consist of rigid bodies, flexural bodies, wheelsets, suspension elements and point masses assembled on a nodal skeleton; (2) a periodic and transient time-history response capability; (3) a component update capability for parametric studies; (4) an orthogonality check on component and system complex eigenvectors; (5) an option for improving low-frequency convergence under modal trunction; (6) a more general sine-amplitude forcing function capability; (7) automatic phase lag generation; (8) user-controlled scaling options on all response plots; and a number of additional minor improvements. A Technical Report Addendum and a completely revised User's Manual document these changes to the previous version of DYNALIST II.
Keywords	Railroad cars Dynamic response Computer programming Models Rigidity Flexibility Suspension systems(Vehicles) Eigenvectors Phase Stability Matrix methods Periodic variations Transient response Recommendations Dynalist 2 computer program Ride quality Wheel rail dynamics
Source Agency	Federal Railroad Administration Transportation Systems Center
NTIS Subject Category	85H - Road Transportation 62A - Computer Hardware
Corporate Authors	Wiggins (J. H.) Co., Redondo Beach, Calif.; Transportation systems Center, Cambridge, Mass.; Federal Highway Administration, Washington, D.C. Office of Research and
Supplemental Notes	See also PB-256 046 and PB-258 194.
Document Type	Technical Report
Title Note	Final rept. Feb 75-Mar 76.
NTIS Issue Number	197625
Contract Number	DOT-TSC-990

DYNALIST II. A Computer Program for Stability and Dynamic Response Analysis of Rail Vehicle Systems. Volume III. Technical Report Addendum.

DYNALIST II. A Computer Program for Stability and Dynamic Response Analysis of Rail Vehicle Systems. Volume III. Technical Report Addendum.
PB258193

Publication Date	1976
Personal Author	Bronowicki, A.; Hasselman, T. K.
Page Count	74
Abstract	Several new capabilities have been added to the DYNALIST II computer program. These include: (1) a component matrix generator that operates as a 3-D finite element modeling program where elements consist of rigid bodies, flexural bodies, wheelsets, suspension elements and point masses assembled on a nodal skeleton; (2) a periodic and transient time-history response capability; (3) a component update capability for parametric studies; (4) an orthogonality check on component and system complex eigenvectors; (5) an option for improving low-frequency convergence under modal trunction; (6) a more general sine-amplitude forcing function capability; (7) automatic phase lag generation; (8) user-controlled scaling options on all response plots; and a number of additional minor improvements. A Technical Report Addendum and a completely revised User's Manual document these changes to the previous version of DYNALIST II.
Keywords	Railroad cars Dynamic response Computer programming Models Rigidity Flexibility Suspension systems(Vehicles) Eigenvectors Phase Stability Matrix methods Periodic variations Transient response Recommendations Dynalist 2 computer program Ride quality Wheel rail dynamics
Source Agency	Federal Railroad Administration Transportation Systems Center
NTIS Subject Category	85H - Road Transportation 62A - Computer Hardware
Corporate Authors	Wiggins (J. H.) Co., Redondo Beach, Calif.; Transportation systems Center, Cambridge, Mass.; Federal Highway Administration, Washington, D.C. Office of Research and
Supplemental Notes	See also PB-256 046 and PB-258 194.
Document Type	Technical Report
Title Note	Final rept. Feb 75-Mar 76.
NTIS Issue Number	197625
Contract Number	DOT-TSC-990