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韩富义 《应用数学和力学(英文版)》1982,(4)
A new shape on the load and elongation curve of ultra highstrength structural steel in tension is measured by means of theadvanced physical methods.A method of calculating true stress-true strain is found in accordance with the whole load-elongationcurve.The calculation results show that during the period of de-formation,whether prior to or after the maximum load,all arestaged power hardening.The method of calculating hardening index is finally studied for discussion. 相似文献
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1.引言单轴拉伸试验是材料基础力学试验之一,研究它的形变与断裂过程,历来受到人们的重视。关于超高强度钢单轴拉伸的形变规律,一般来说,当外加负荷较小时,材料处在弹性阶段,这时试样形状为圆柱体,应力与应变服从虎克定律。随外加负荷增加,材料进入塑性状态。从屈服至最大负荷这一段,试样仍保持为圆柱体,应力与应变关系服从二段幂乘硬化律。从最大负荷到断裂这一段,试样发生了局部变形,即所谓颈缩现象, 相似文献
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韩富义 《应用数学和力学(英文版)》1982,3(4):591-598
A new shape on the load and elongation curve of ultra high strength structural steel in tension is measured by means of the advanced physical methods. A method of calculating true stresstrue strain is found in accordance with the whole load-elongation curve. The calculation results show that during the period of deformation, whetner prior to or after the maximum load, all are staged power hardening. The method of calculating hardening in dex is finally studied for discussion.The Iron and Steel Research Institute of the Anshan Iron and Steel Comapny 相似文献
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运用先进的物理方法,测出了超高强度钢负荷-伸长曲线新的形状,建立了一种由负荷-伸长全曲线计算真应力-真应变的方法,计算结果指出:在整个变形阶段中,不论是在最大负荷前或最大负荷后都是分段幂乘硬化的,最后研究硬化指数的计算方法,供讨论. 相似文献
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