| 弹塑性材料全拉伸曲线拟合的新模型 |
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| 引用本文： | 刘习文,吴国勋. 弹塑性材料全拉伸曲线拟合的新模型[J]. 北京航空航天大学学报, 1996, 0(5) |
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| 作者姓名： | 刘习文 吴国勋 |
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| 作者单位： | 北京航空航天大学飞行器设计及应用力学系 |
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| 摘 要： | 提出用分指数四项式拟合弹塑性材料的以应变表示应力的拉伸曲线．利用几个材料拉伸特征点的数据，就能获得全拉伸曲线的简单统一的表达式．与典型航空弹塑性材料的试验全拉伸曲线的对照表明，这种拟合模型具有很高的工程精度，从而具有重要的实用价值
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| 关 键 词： | 弹塑性；材料力学；应力－应变关系；拟合 |
A NEW MODEL OF TENSILE CURVE FITTING FOR ELASTIC PLASTIC MATERIALS |
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| Liu Xiwen Wu Guoxun. A NEW MODEL OF TENSILE CURVE FITTING FOR ELASTIC PLASTIC MATERIALS[J]. Journal of Beijing University of Aeronautics and Astronautics, 1996, 0(5) |
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| Authors: | Liu Xiwen Wu Guoxun |
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| Abstract: | A new model of tensile curve fitting for elastic plastic materials by using a quadrinomial with fractional exponents is proposed,in terms of which a simple and expilcit repesentation of strain versus stress up to ultimate strength can be obtained by fitting several basic data of material characterisic.Lastly a comparison of the fitting curves with experimental curves for two typical aeronautical materials is made to demonstrate the efficiency and accuracy of the proposed model. |
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| Keywords: | elastic plastic mechanics of materials stress strain relation fitting |
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