Creating the PSHELL Card for Honeycomb PanelsInformation needed:
D  Total core thickness (the value "d" in the figure above) Facesheet  Material properties Honeycomb  Material properties, cell size, and gage Format of the PSHELL Card:1 2 3 4 5 6 7 8 9 10 PSHELL PID MID1 T MID2 12I/T^{3 } MID3 T_{S}/T NSM PSHELL and PID are self explanatory. MID1, T These terms are for in plane load of a honeycomb panel. Assume that the facesheets take all the load. Therefore:
T is the total thickness of the facesheets. MID2, 12I/T^{3 } These terms are for the bending load of a honeycomb panel. Assume the facesheets take all the load. Therefore:
12I/T^{3} is the inertia of a rectangular plate I for Honeycomb is approximately TD^{2}/4 for thin facesheets and a thick core. If the facesheets are thicker relative to the core, then I is [2/3][(D/2)+(T/2)]^{3}[D^{3}/12] T is the total thickness of the facesheets. D is the thickness of the honeycomb core. MID3, T_{S}/T These terms are for the shear load of a honeycomb panel. Assume that the honeycomb core takes all the load. Therefore:
T_{S} is the shear thickness, or for the case of honeycomb, it is the core thickness D. T is the total thickness of the facesheets. NSM The non structural mass is required for honeycomb panels. The density (rho) is ignored on the MID3 card, however, the mass of the honeycomb core and bonding material must be included. The NSM, which is given in mass per unit area, is determined by:
where D is the thickness and rho_{nominal} is often given in pcf, pounds per cubic foot. Be careful of your units when calculating NSM! Back to the Honeycomb Plate Properties Page 



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