Package | Description |
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nxopen.cae.aerostructures.author |
Provides classes and interfaces relating to Aero Structures Author.
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Modifier and Type | Method and Description |
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ABB.MsPlateBucklingFlatCompressiveData |
ABB.msPlateBucklingFlatCompressive(double e,
double nu,
double n,
double a,
double b,
double t,
ABB.UnloadedEdgeSupportType bcUnloaded,
ABB.EdgeSupportType bcLoaded,
ABB.MaterialBehaviour behaviour,
double[] sigma)
MS Plate Buckling Flat Compressive
Computes margin of safety of a flat metallic rectangular panel under compressive load
The formula is MS = sigmaAllowable / abs(sigma) - 1
where:
'sigmaAllowable' is the compressive buckling stress allowable,
'sigma' is the compressive stress (MS is not calculated in case of tensile stress),
'MS' is the margin of safety
Allowable = eta * PI^2*kc*E/(12*(1-nu^2)) * (t/b)^2
where
'kc' is the bending buckling stress coefficient
'E' is the Young's modulus
'nu' is the elastic Poisson coefficient
't' is the panel thickness
'a' is the unloaded edge length
'b' is the loaded edge length
'eta' is the plasticity reduction factor: SigmaAllowablePlastic = eta*SigmaAllowableElastic
eta = 1 if material is considered as elastic (Material behaviour = Elastic)
eta is obtain from following charts if material is considered as elastic-plastic (Material behaviour = Elastic-Plastic):
SigmaAllowablePlastic/Sigma0.7 = f(SigmaAllowableElastic/Sigma0.7)
MetallicPanelCompressivePlasticityCurveBC1 if the Boundary Condition for the unloaded edges is Simply Supported-Free,
MetallicPanelCompressivePlasticityCurveBC2 if the boundary condition for the unloaded edges is different of Simply Supported-Free
Input
E Young's modulus
nu Elastic Poisson coefficient
n Ramberg-Osgood parameter
a Unloaded edge length
b Loaded edge length
t Panel thickness
BC_Unloaded Type of support along unloaded edges {'Clamped-Clamped';'Simply Supported-Clamped';'Simply Supported-Simply Supported';'Free-Clamped';'Free-Simply Supported'}
BC_Loaded Type of support along loaded edges {'Clamped';'Simply Supported'}
behaviour Material behaviour
nblc Number of load cases
sigma Stress coming from load extractor
Output
sigmaAllowable Stress allowable
MS Margin of safety
Return
Status of the calculation
License requirements: nx_masterfem ("Finite Element Modeling") Created in NX12.0.0 |
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