104年 - 104 國立嘉義大學_碩士班(甲組)招生考試試題_生物機電工程學系：材料力學#146326

科目：研究所、轉學考(插大)◆材料力學 | 年份：104年 | 選擇題數：0 | 申論題數：9

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所屬科目：研究所、轉學考(插大)◆材料力學

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申論題 (9)

1. A shaft of 3 m long transmits 20kW with 120rpm. Determine the minimum diameter of the shaft if the allowable shear stress and torque angle are 40MPa and 6o, respectively. (Assume G=84GPa) .(25%)
2. An element in plane stress is subjected to stresses as shown in Figure 1. Using Mohr’s circle, determine
(a) the principal stresses and principal planes,
(b) the maximum shear stresses. (25%)
3. Explanation of those terminologies. (25%)
(a) Hooke’s law
(b) Ultimate stress
(c) Saint Venant’s principle
(d) Yield point at 0.2 % offset
(e)Statically indeterminate
4. Draw the shear-force and bending-moment diagrams for the beam shown by the area method. (25%)