Hi All,
I have been running an analysis using COSMOSXpress on a simple sheetmetal part and am finding the results to be confusing. The first configuration of the part I run is just a piece of bent sheetmetal with no strengthening ribs. The second configuration is the same piece of sheetmetal, but with several ribs to add strength. If I'm reading COSMOS' results correctly, it's telling me that the configuration without ribs is by far stronger (less deflection) than the configuration with ribs. The lowest Factor of Safety for the no-rib config is just over 1,000, and the lowest Factor of Safety for the rib config is around 15. This seems absurd. So, either COSMOS doens't work well, or there is some heavy user error going on here.
I have applied SS 304 to each part, fixed the bottom to ground, applied a load of 150lb to the top, and accepted all the default values to run the analysis. The part is about 50 in in diameter, and I simply suppressed the rib features when running the no-rib-configuration analysis. Anyone have ideas why I'm getting such strange results?
I have been running an analysis using COSMOSXpress on a simple sheetmetal part and am finding the results to be confusing. The first configuration of the part I run is just a piece of bent sheetmetal with no strengthening ribs. The second configuration is the same piece of sheetmetal, but with several ribs to add strength. If I'm reading COSMOS' results correctly, it's telling me that the configuration without ribs is by far stronger (less deflection) than the configuration with ribs. The lowest Factor of Safety for the no-rib config is just over 1,000, and the lowest Factor of Safety for the rib config is around 15. This seems absurd. So, either COSMOS doens't work well, or there is some heavy user error going on here.
I have applied SS 304 to each part, fixed the bottom to ground, applied a load of 150lb to the top, and accepted all the default values to run the analysis. The part is about 50 in in diameter, and I simply suppressed the rib features when running the no-rib-configuration analysis. Anyone have ideas why I'm getting such strange results?