Composite Panel Calculations.xlsx
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Description
Purpose of calculation:
Simply Supported Plate - width (b) greater than 1/3 of length (a). Because plate theory is more involved than beam theory, some 'charts' have been provided to give multipliers/coefficients (k1, k2, k3a & k3b) for use with plates simply supported on all four sides.
Calculation Reference
HexWeb SANDWICH DESIGN MANUAL
Calculation Validation
Reproduced result published in manual.
Calculation Procedure
1) Determine Panel Properties
- Thickness of face material and core
- Young's modulus of face and core
- Shear modulus of core
- Core allowable shear stress
- Core Cell size
- Poisson's ratio of face
- Limiting stress in face
- Buckling Safety Factor
- Poisson's ratio term
- Core shear modulus ratio
- Distance between face centres
- Critical intracell buckling stress
- Critical face wrinkling stress
2) Panel Loading Assessment
- Dimensions of panel
- Panel pressure load
- Panel deflection term
- Lookup values from graphs (encoded on 'K1' worksheet)
- Deflection of panel
- Lookup values from graphs (encoded on 'K2' worksheet)
- Max face stress
- Lookup values from graphs (encoded on 'k3a' worksheet)
- Core shear stress - a direction (W direction)
- Lookup values from graphs (encoded on 'k3b' worksheet)
- Core shear stress - b direction (L direction)
SELECT FACING MATERIAL FROM LOOKUP TABLE
- Epoxy UD CARBON tape (0°) 60% volume fraction
- Epoxy UD GLASS tape (0°) 55% volume fraction
- Epoxy WOVEN CARBON (G793-5HS) 55% volume fraction
- Epoxy WOVEN ARAMID (285K-4HS) 60% volume fraction
- Epoxy WOVEN GLASS (7781-8HS) 50% volume fraction
- Phenolic WOVEN GLASS (7781-8HS) 55% volume fraction
- ALUMINIUM Alloy 2024 T3
- ALUMINIUM Alloy 5251 H24
- ALUMINIUM Alloy 6061 T6
- STEEL carbon 1006
- STEEL carbon 1017
- Exterior PLYWOOD Fir
- Tempered HARDWOOD Teak
SELECT CORE MATERIAL FROM LOOKUP TABLE
- 3003 Aluminium 29kg/m³
- 3003 Aluminium 37kg/m³
- 3003 Aluminium 42kg/m³
- 3003 Aluminium 54kg/m³
- 3003 Aluminium 59kg/m³
- 3003 Aluminium 83kg/m³
- 5052 Aluminium 37kg/m³
- 5052 Aluminium 50kg/m³
- 5052 Aluminium 54kg/m³
- 5052 Aluminium 72kg/m³
- 5052 Aluminium 83kg/m³
- 5052 Aluminium 127kg/m³
- 5052 Aluminium 130kg/m³
- 5056 Aluminium 37kg/m³
- 5056 Aluminium 50kg/m³
- 5056 Aluminium 50kg/m³
- 5056 Aluminium 72kg/m³
- HRH10 Nomex (Aramid) 29kg/m³
- HRH10 Nomex (Aramid) 32kg/m³
- HRH10 Nomex (Aramid) 32kg/m³
- HRH10 Nomex (Aramid) 48kg/m³
- HRH10 Nomex (Aramid) 48kg/m³
- HRH10 Nomex (Aramid) 64kg/m³
- HRH10 Nomex (Aramid) 64kg/m³
- HRH10 Nomex (Aramid) 80kg/m³
- HRH10 Nomex (Aramid) 96kg/m³
- HRH10 Nomex (Aramid) 123kg/m³
- HRH10 Nomex (Aramid) 144kg/m³
- HRH10 Nomex (Aramid) 29kg/m³
- HRH10 Nomex (Aramid) 48kg/m³
Calculation Reference
Composites Design
Composite Materials
Composite structures
Calculation Preview
(4/21)
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Comments: 1
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The error you describe is [#VALUE](https://office.microsoft.com/en-gb/excel-help/correct-a-value-error-HP010342330.aspx) which does not suggest that the problem is with XLC. Follow the link to try to diagnose your problem.