element type for glass in ansys
element type for glass in ansys
(OP)
i need to create a glass for windshield.
im using fluid30 as an acoustic element
whats the element type for glass and whether i can use it with fluid30 for coupled acoustic analysis
hope u can help me out.
thank you
Quadris.
Automotive Engineering,
im using fluid30 as an acoustic element
whats the element type for glass and whether i can use it with fluid30 for coupled acoustic analysis
hope u can help me out.
thank you
Quadris.
Automotive Engineering,





RE: element type for glass in ansys
RE: element type for glass in ansys
I chose shell181 element type and used TB shift, tool narayanswamy tool to define the viscoelastic properties for glass. I am performing a modal analysis and when i run the solve command it gives an error saying nlgeom must be on when tb,sma is used.. But nlgeom can be only activated for static or a full transient analysis. if i run tha analysis without defining the viscoelastic properties using tb command then it solves perfectly.
do u know how i can solve this problem.
thank you for your help.
quadris
automotive engineering.
RE: element type for glass in ansys
-- drej --
RE: element type for glass in ansys
i was trying to model the windshield of the vehicle cabin with glass and with non linear properties. i used tb/hyper command with nlgeom ,on.ansys solved it but as u said there were no changes in the results. i think ansys ignored teh non linear properties.
please tell me whether doing modal analysis is correct for this problem and also how to select exterior nodes of an area. we use nsla,s,1 to select interior nodes .
thank you for all your help.
quadris
automotive engineering.
RE: element type for glass in ansys
asel,s,area,,(area number)
lsla
nsll
I'm not an expert in acoustic analysis, however it appears that you will probably have to perform a harmonic analysis (ANTYP,HARMIC), which, as you say will require a frequency-based analysis to be performed. Remember that Harmonic Response analysis is a LINEAR analysis. Any nonlinearities, such as plasticity and contact (gap) elements, will be ignored, even if they are defined. You can, however, have unsymmetric system matrices such as those encountered in a fluid-structure interaction problem (see Acoustics in the ANSYS Coupled-Field Analysis Guide). Another, relatively expensive method is to do a transient dynamic analysis with the harmonic loads specified as time-history loading functions; see Transient Dynamic Analysis in the help for details.
-- drej --