For an axially loaded rod, prove that = 1 for the E B /p guidelines in

For an axially loaded rod, prove that ß = 1 for the E^B/p guidelines in Figure 2-24.

Data in Figure 2-24.

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Young's modulus E, GPa 1000- 100 10 10-1 10-2 10-3. 104. Figure 2-24 Longitudinal wave speed 10 10³ 0.01 m/s Foams m/s Rigid polymer foams 10² m/s 0.1 Natural materials Technical ceramics Wood grain GFRP. Al alloys Composites. CFRP Flexible polymer foams PMMA. PA Wood PS- 1 -grain Cork PP. Glass Mg alloys- PE Leather EVA- Isoprene Butyl rubber BC Polyester 1 Density p. Mg/m² Si₂N, SIC Al₂O₂ PEEK Concrete -PET Epoxies PC -PIFE Ti alloys -Polymers Zinc alloys Neoprene Steels Ni alloys - Silicone elastomers -Polyurethane Elastomers 10 WC W alloys -Cu alloys Metals Lead alloys Guidelines for minimum mass design MFA CA