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Question: q6 a ductile material has the properties s 4137 mpa...

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Q-6 A ductile material has the properties S, 413.7 MPa and S -517.1 MPa. Using the ductile Coulomb- Mohr theory, determine the factor of safety for the states of plane stress cases given below as (a)or 172,4 MPa, σ.-103.4 MPa (b)or 103,4 MPa ơ, -103.4 MPa (c) σ.-138 MPa, t,--69 MPa Q-7 A brittle material has the properties Sut and S 620.5 MPa. Using the brittle Coulomb- Mohr and modified-Mohr theories, determine the factor of safety for the following states of plane stress. (a) o, 172,4 MPa,, 103.4 MPa (b) o, 103.4 MPa,o103.4 MPa (c) ơ.-138.0 MPa, xy-_ 69 MPa 206.8 MPa
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