Question

A composite rod with the same cross-sectional area over its entire length is composed of material, = "malleable cast iron" (segments AB and CD) and an unknown material (segment BC). Under the axial compressive loading shown, the change in length from point A to D is 8 = -8.46475 x 10 4. in . The material that segment BC is most likely composed of is: Consider compressive forces negative and tensile forces positive Lac-> LAB- LAB - 4.5.in LBC - 2.6.in LCD -4.5.in F - 1801bfd -0.38.in "B" Choices = "annealed titanium alloy" "annealed invar" "malleable cast iron" "0.2% Chardened steel" "annealed red brass" "wrought, hot-rolled monel" "2014-T4 wrought aluminum" "structural steel" "wrought iron"

Answer 1

AB, CD- malleable Erc = 172 Gira , laB=LCD = 4.5 in. LBC = 2.6 an. cast foon. con 250106 pri Azam , F = 180 lbf = (3.14) (0.38) 10=0.1183540 → 8=-(Al AB + elect Aloo) Ales = Alco e - 0.98SSW) (95% IB) (180) (4.5) A las = Alco = 2.858 xvõll en d= - (A LAB + A deo + Alge) a> (68.464758159) = - (2.858 x 104 + 2.858x10 "+AlBr) AdBC = 2.748758104, and - Folfc = 2.748788104 an AE El BC A (ABC) 680) (2.6). To. 113354) (2.748788109) 12 &= 15.02 x 106 psil A- Annealed titanium alloy "rroft suprecht