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Average Mechanical Prupertiva ofThpical Engineering Materials (SI Units) Mterials 27 414 414 172|448 2. Alloys t--MIịahk: AS

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A steel beam AB is designed to stop the oncoming railroad car as shown in Figure 4, which has a mass of 10000 kg and is movin


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A steel beam AB is designed to stop the oncoming railroad car as shown in Figure 4, which has a mass of 10000 kg and is moving towards it at v-0.5 m/s. The beam is simply supported with only horizontal forces occur at A and B, and impacted at its centre by the car. Assume that the railroad car and the supporting framework for the beam remain rigid Given data. Est-200 GPa and ơallo,-250 MPa [Rasuk keluli AB di rekabentuk untuk memberhentikan keretapi yang datang seperti ditunjukkan dalam Gambarajah 4, yang mempunyai jisim 10000 kg dan bergerak menuju padanya pada v 0.5 m/s. Rasuk yang disokong mudah dan hanya daya mendatar terjadi pada A and B telah dihentam pada pusat rasuknya oleh keretapi. Andaikan bahawa keretapi dan penyokong kerangka kerja untuk rasuk masih tegar. Diberikan Est-200GPa, dan σ,-250 MPa.] (a) Calculate the maximum deflection of the beam Hitungkan pesongan maksimum rasuk.J (4 Marks/Markah) (b) Determine whether the beam can support the maximum stress developed from the impact Tentukan samada rasuk dapat menampung tegasan maksimum yang terhasil daripada hentaman.1 (10 Marks/Markah) (c) Regarding the beam design, propose suitable parameters changes in order to reduce the maximum stress. Justify your answer. Berdasarkan rekabentuk rasuk, cadangkan perubahan parameter-parameter yang sesuai untuk mengurangkan tegasan maksimum. Justifikasi jawapan anda.] (6 Marks/Markah) v- 0.5 m/s 200 mm Figure 4 Gambarajah 4]
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448 ET l 2. - 0. 6131 25 xio* m 3 Δ止 3 0,613125 X 10-sm CALCULATE THE MAXIMuM DEFLECTION 2 = 3.953×10-3m 스 |3.95mm 06 N/m )(6324 55. 53 N) (2 m) 316228N·m 4 CALCULATE THE MAx, MUM STRESs DEVELOPED (316228 N.rm )(o.1 ニ 1 2. Tus, TH E GEAM CAN SUPPORT

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