HyperSizer Support Forum

Software Use => FEM Coupling (HyperFEA) => Topic started by: orchidworld on July 25, 2012, 03:11:22 AM

Title: how to chose Tension or compression load as load sets strength in HyperSizer
Post by: orchidworld on July 25, 2012, 03:11:22 AM

HI, Everyone,

Strength Loads
Using the set of tensile and compressive averages and standard deviations, the following load conditions are applied.

TS = {Nx,T + K?Nx,T, ..., Mx,T + K?Mx,T, ..., Qx,T + K?Qx,T}

CS = {Nx,C - K?Nx,C, ..., Mx,C - K?Mx,C, ..., Qx,C - K?Qx,C}

The worst case of these load conditions is reported in the Sizing form.


how to understand?  Please see the picture, why: Strength =T-ave, not C-ave? the C-ave is more worse....

Thanks

Title: Re: how to chose Tension or compression load as load sets strength in HyperSizer
Post by: James on July 26, 2012, 01:42:03 PM

HyperSizer runs through multiple loops, a tension loop and a compression loop. Only the "controlling load set" is being shown as the Load Set Controlled Unfactored load on the Design-to loads tab, however, the design returned must satisfy all load states.

The "controlling load set" is determined by the minimum margin of safety. That is if panel buckling controls, then the controlling load will be from the compression loop. It appears your minimum margin of safety is "INVLD GEOM". This means that your design violates some geometry check that has been activated on the failure tab.

See geometric check help topic:
http://hypersizer.com/help/index.php#Failure/geometry.php

This failure method is not load based, so it appears to be flagging the tension loop as controlling. In reality, there is no controlling load for the geometry checks. Maybe if a geometric check is controlling then this field should be left blank?