EAS Attachment Concept

1.1 Description of Design Design was focused on simplicity; one single bracket was used in four separate locations to be mounting to the plate via thumb screws or bolts. Each bracket is intended to be connected to the seat track via a common seat track stud fastener assembly. Using 4 independent and equivalently sized connection brackets simplifies manufacturing reducing part complexity & cost. This system also allows for simple flat packaging of the parts in the envelope required. 2.1 Materials and part details Material selection is 6160-T6 Aluminum, parts intended to be water-jet or laser cut from 1” thick plate with holes drilled and tapped where applicable for mounting to the seat track and the mounting plate. See drawing detail for more information and for reference 3. Structural Simulation & Analysis 3.1 Part Properties Part Name bracket1.par Volume 39.207 in^3 Weight 3.839 lbf each (total of 4 in assembly) 3.2 Material Properties Material Name Aluminum, 6061-T6 Mass Density 0.098 lbm/in^3 Young's Modulus 10000.000 ksi Poisson's Ratio 0.330 Yield Strength 40.000 ksi Ultimate Strength 45.000 ksi 3.3 Study Properties Mesh Type Tetrahedral Mesh Number of elements 15,003 Number of nodes 25,685 Solver Type Nastran 3.4 Von Mises Stress Minimum 3.699e-003 ksi Maximum 1.061e+001 ksi 3.5 Resultant Displacement Minimum 0.000e+000 in Maximum 4.427e-002 in 5. Assembly • Fasten each independent member to the seat track studs loosely. Using seat track stud mount (McMaster # 39695T370) • Rotate each member until the tapped hole in the member matches the hole in the EAS mounting plate. • Once aligned fasten together with 3/8-16 UNC threaded thumb screw or bolt. • Repeat for each member until completed.