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Mechanics Of Materials - (3Rd Ed , By Beer, Johnston, & Dewolf) Episode 2

Tham khảo tài liệu 'mechanics of materials - (3rd ed , by beer, johnston, & dewolf) episode 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | i r-. I j I 2.34 The length of the assembly decreases by 0.15 mm when an axial force is applied by means of rigid end plates. Determine a the magnitude of the applied force b the corresponding stress in the steel core. SOLUTION ôF O-Xx c -fo c.Uy ske . Fa s portion O fo fice GftZA exl loy -stee p GOA ._ AkEi k L - Ẹ4- fi As Ex 3 L p u 4 s EA EaAs f- As - - Qữũx O Ct At 0.0 4 Xo.OSO - Co.05o ỡ.ớzo T ÓỒŨ Q íù Pr l l05 io ós o o Xaooxio X too o - 7 - 77.S lo M 75 . kU ft 6s y. . wj Pl 5 Ị_ 2Sb X O 3 - ISO MP PROBLEM 2.34 Brass shell E 105 GPa 5 mm 5 mm 20 mm 20 mm 5 mm 5 mm Steel core E 200 GPa 250 mm I i ị I Í Í Ị I I no c As - 6 Ĩ4 2.35 The 4.5-ft concrete post is reinforced with six steel bars each with a 1 -in. diameter. Knowing that Es 29 X 106 psi and c 4.2 X 106 psi determine the normal stresses m the steel and in the concrete when a 350-kip axial cenưic force p is applied to the Dost. SOLUTION GứW ìeo ty He six Ai -ặeC-As íiaV-S-. ỂY r 2 ịg.s L s H.S- fl- r in _ - lo -X 7.Ễ.7 v o c 6 5 EsS. - 2. Ị lũ í - S7-67 lÕ e --8 3tl lC lp ÌT-S.S 4Ksì - ce i .2 ocy- a - to r - l.ioĩ iẳp -I.ĨO8IHÌ PROBLEM 2.3tì Brass core 2.36 An axial centric force of magnitude p - 450 kN is applied to the composite block shown by means of a rigid end plate. Knowing that h 10 mm determine the normal stress in a the brass core Ố the aluminum plates. E- 105 GPa Ab X too - MoQ io-t- w - A l íXcóỴio - 1200 2ơo o cíKt s. .33 73 x o- 105 xÍO KẵííOOwíÔ 4- 70 tỊO Xj oo X io-t 0 Cb bÊ GaS x o Xl.SSiSx o 3 s IHO.fex o4 pẠ. - IMO.fe Mpet fe -- E S. z.isxtci f . S.7fMRi -