93年 - 93 淡江大學轉學考工程力學#56040

科目：轉學考-工程力學 | 年份：93年 | 選擇題數：0 | 申論題數：9

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所屬科目：轉學考-工程力學

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申論題 (9)

【已刪除】1. The following values of stress and strain are extracted from a test data recorded daring a tension test in a mild steel specimen as shown in Table 1. The initial diameter of the material was 0.502 cm and the gage length was 8 cm. Draw the stress-strain curve and identify the proportional limit (5%), yield point(5%), ultimate strength(5%X and breaking stress for the material(5%).

(a) modulus of elasticity(5%),

(b) Poisson's ratio(5%),

(c) proportional limit(5%),

(d) modulus of rigidity(5%), and

(e) what would be the factor of safety with respect to slip if a one-inch diameter bar of the same material was carrying the same load? (5%)

【已刪除】3. A hollow shaft has an outside diameter of 150 mm and an inside diameter of 60 mm. The shaft is fixed at one end and is loaded by two applied torques as shown in Figure 3. Determine the maximum shear stress acting on the outside surface of the shaft. (10%) Determine the maximum shear stress on the inside surface of the shaft. (10%)

【已刪除】4. Determine the maximum load P that can be applied the beam shown in Figure 4 if the allowable bending fiber stresses are 15,000 lb/in² in tension and 25,000 lb/in² in compression. (20%)

【已刪除】5, Find the forces in the members BFt and CE of the truss shown in Figure 5. (15%)