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图示结构中,两种材料的弹性模量分别为 E a 和 E b ,且已知 E a > E b ,二杆的横截面面积均为 b × h ,长度为 l ,两轮之间的间距为 a 。

作业解析 1. 图示结构中,两种材料的弹性模量分别为 E a 和 E b ,且已知 E a > E b ,二杆的横截面面积均为 b × h ,长度为 l ,两轮之间的间距为 a 。. 试求: 1 .二杆横截面上的正应力; 2 .杆的总伸长量及复合弹性模量; 3 .各轮所受的力。. F R H. F Na. F P. F Nb. F R D. a. 作业解析 1. 解: 1 .受力分析,求解超静定问题:. F R H. F Na. F P. F Nb. F R D. a. 作业解析 1. 解: 2 .二杆横截面上的正应力. F R H.

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图示结构中,两种材料的弹性模量分别为 E a 和 E b ,且已知 E a > E b ,二杆的横截面面积均为 b × h ,长度为 l ,两轮之间的间距为 a 。

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  1. 作业解析1 图示结构中,两种材料的弹性模量分别为Ea和Eb,且已知Ea>Eb,二杆的横截面面积均为b×h,长度为l,两轮之间的间距为a。 试求: 1.二杆横截面上的正应力; 2.杆的总伸长量及复合弹性模量; 3.各轮所受的力。

  2. FRH FNa FP FNb FRD a 作业解析1 解: 1.受力分析,求解超静定问题:

  3. FRH FNa FP FNb FRD a 作业解析1 解: 2.二杆横截面上的正应力

  4. FRH FNa FP FNb FRD a 作业解析1 解: 3.确定杆的总伸长量及复合弹性模量: 杆的总伸长量 复合弹性模量;

  5. FRH FNa FP FNb FRD a 作业解析1 解: 4.确定各轮所受的力: 由于FNa>FNb,所以,轮C、轮G脱离接触面,所以受力为零。 据此,解出轮H、轮D的·受力:

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