发布时间 : 星期日 文章工程力学试题及答案 - A更新完毕开始阅读5ba4d457960590c69fc37676
学院、系 专业班级 学号 姓名 ··································································································密·封·线· 解: ①画杆件轴力图(6分)
?40?100??40?10?6mm3EA200?10?500评分标准:(1)只计算轴力得3分,画杆件轴力图正确得6分;
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杆件轴力图如图
②求杆内最大正应力(6分)
FNmax50????0.1Mpamax A500③求CD段轴向变形量,(6分)
△l2?FN2L?(3)求CD段轴向变形正确得6分,其中公式4分,结果2分。