如图5-6所示结构中二杆的材料相同,横截面面积分别为A和2A,以下四种答案中该结构的许用载荷为()。 A. [F] = A[a] B. [F] = 2...

作者: tihaiku 人气: - 评论: 0
问题 如图5-6所示结构中二杆的材料相同,横截面面积分别为A和2A,以下四种答案中该结构的许用载荷为()。
选项 A. [F] = A[a] B. [F] = 2A[σ] C. [F] = 3A[σ] D. [F] = 4A[σ]
答案 B
解析 提示:由较细杆的强度确定结构的许用荷载。

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