y = 350 MPa. MSS: σ 1 − σ 3 = S y /n ⇒ () 1 3 y S n σ σ = − DE: () () 1/2 1/2 2 2 2 2 2 3 A A B B x x y y xy σ σ σ σ σ σ σ σ σ τ ′ = − + = − + + y S n σ = ′ (a) MSS: σ 1 = 100 MPa,σ 2 = 100 MPa,σ 3 = 0 350 3.5. 100 0 n Ans = = − DE: 2 2 1/2 350 (100 100(100) 100) 100 MPa, 3.5. 100 n Ans σ ′ = − + = = = (b) MSS: σ 1 = 100 MPa,σ 2 = 50 MPa,σ 3 = 0 350 3.5. 100 0 n Ans = = − DE: 2 2 1/2 y = 350 MPa. MSS: σ 1 − σ 3 = S y /n ⇒ () 1 3 y S n σ σ = − DE: () () 1/2 1/2 2 2 2 2 2 3 A A B B x x y y xy σ σ σ σ σ σ σ σ σ τ ′ = − + = − + + y S n σ = ′ (a) MSS: σ 1 = 100 MPa,σ 2 = 100 MPa,σ 3 = 0 350 3.5. 100 0 n Ans = = − DE: 2 2 1/2 350 (100 100(100) 100) 100 MPa, 3.5. 100 n Ans σ ′ = − + = = = (b) MSS: σ 1 = 100 MPa,σ 2 = 50 MPa,σ 3 = 0 350 3.5. 100 0 n Ans = = − DE: 2 2 1/2
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Shigley’s MED, 10 th edition Chapter 5 Solutions, Page 1/52 Chapter 5 5-1S y = 350 MPa. MSS: σ 1 − σ 3 = S y /n ⇒ () y S n =− DE: 222 22 3 AABBxxyyxy σσσσσσσσστ ′=−+=−++ n = (a) MSS: σ 1 = 100 MPa, σ 2 = 100 MPa, σ 3 = 0 350 == − DE: 221/2350 (100100(100)100)100 MPa, 3.5 . σ ′=−+ === (b) MSS: σ 1 = 100 MPa, σ 2 = 50 MPa, σ 3 = 0 350 == − DE: 221/2 350 (100100(50)50)86.6 MPa, 4.04 . σ ′=−+=== (c) 2 2 100100 22 AB σσ =±+−=− 123 σσσ == =− MSS: 350 140(40) == −− DE: () 1/2 22 350 σ ′=+−=== (d) 2 2 50 755075 22 AB σσ −−−+ =±+−=−− 123 σσσ ==−= − MSS: 350 0(114.0) == −− DE: 2221/2 [(50)(50)(75)(75) 3(50)]109.0MPa σ ′=−−−−+−+−= 350 == (e) () 2 2 10020100 20 22 AB σσ +− =±+−= |