| 对两个材料力学问题的探讨 |
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| 引用本文： | 徐杏华,唐寻. 对两个材料力学问题的探讨[J]. 农机化研究, 2005, 0(5): 79-80 |
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| 作者姓名： | 徐杏华 唐寻 |
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| 作者单位： | 孝感学院,土木建筑工程系,湖北,孝感,432000 |
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| 摘 要： | 在材料力学中,对铸铁试件的轴向压缩破坏一般都认为破坏断面与杆件横截面成45°角;在材料的应力分析上,只对平面应力状态进行研究,对三角形单元的应力研究轻少。为此分别采用实验方法和分析法,对上述两个问题进行探讨。其实验结果是:铸铁试件的压缩破坏一般在55°左右,考虑内摩擦力的影响后,得到了很好的理论解释;而对三角形单元的应力分析,用应力圆法求解简单方便。对这两个问题的研究,将有助于材料力学的应用与发展。
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| 关 键 词： | 教育学 材料力学 分析 铸铁 内摩擦力 破坏断面 三角形单元 应力圆 |
| 文章编号： | 1003-188X(2005)05-0079-02 |
| 修稿时间： | 2004-08-09 |
Discussion of Two Material Mechanics Problems |
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| XU Xing-hua,TANG Xun. Discussion of Two Material Mechanics Problems[J]. Journal of Agricultural Mechanization Research, 2005, 0(5): 79-80 |
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| Authors: | XU Xing-hua TANG Xun |
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| Abstract: | This paper has carried on the discussion to two material mechanics problems. One is the axial compress and destroy on casting iron of the try one . Most textbook think that destroy section and a cross section of pole to meet at an angle of 45 degrees,but the experimental result is generally about angle of 55 degrees. Considering the influence of interior frictional force ,we have received very good theoretical explanation. The other one is the triangular unit stress analyse ,a simple and convenient method that solve with stress circle. |
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| Keywords: | education material mechanic analysis casting iron interior frictional force destroyed section triangular unit stress circle |
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