Reduced beam model for an assembly
Reduced beam model for an assembly
(OP)
Hi All,
I need help with general guide lines to create a beam model for a complex assembly that would match at least first few frequencies.
For known cross sections (angle, channel etc.,) I can build the model. However, for complex assemblies with many subassemblies, I am assuming the process could be of a trial and error by assuming simplified cross sections and adjusting density to match first couple of frequencies (say 5).
Any help is appreciated.
Thanks,
- Dipak
I need help with general guide lines to create a beam model for a complex assembly that would match at least first few frequencies.
For known cross sections (angle, channel etc.,) I can build the model. However, for complex assemblies with many subassemblies, I am assuming the process could be of a trial and error by assuming simplified cross sections and adjusting density to match first couple of frequencies (say 5).
Any help is appreciated.
Thanks,
- Dipak
Talk To Other Members
RE: Reduced beam model for an assembly
If your model is too complicated for beams but has thin-walled members then consider using shell elements. Modal analysis should solve relatively fast even for large models.
RE: Reduced beam model for an assembly
I never had to build a reduced beam model to represent a complex assembly so wanted to learn from the experts here.
Yes my model is too complicated with steel and aluminum alloy parts. I can build a model with shell elements. However, customer wanted a reduced beam element model so shell model is not an option.
I can approximate a complex user defined section to represent the assembly. I thought to match first few frequencies I will have to play with density/modulus of elasticity.
Thanks again. I appreciate your help!
- Dipak