2DOF spring-mass free vibrations
2DOF spring-mass free vibrations
(OP)
hi to all
i am looking for a simple program that makes linear dynamic analysis of spring-mass systems with 2DOF or more, under free vibrations
any suggestion?
i am looking for a simple program that makes linear dynamic analysis of spring-mass systems with 2DOF or more, under free vibrations
any suggestion?






RE: 2DOF spring-mass free vibrations
Some texts that are useful are
Structural Dynamics by Clough and Penzien
Structural Dynamics by Craig
Dynamics of Structures by Chopra
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: 2DOF spring-mass free vibrations
has all the relevant equations, as Qshake says, chuck them at a piece of mathematical software and you'll get the answers.
http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=21
may or may not help
Cheers
Greg Locock
RE: 2DOF spring-mass free vibrations
that's what i am doing actually, i am using a worksheet (mathcad) for calculating free vibrations of a 2dof system, and since i don't like my results i would check something else
greg thanks for the link
http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=21
but it's for external actions only and allows only K1=K3, i'd need something even easier, just initial displacement conditions
RE: 2DOF spring-mass free vibrations
Are the errors in the predicted resonant frequencies (for which formualae are easily available) or in the amplitude of response?
Cheers
Greg Locock