| 轧辊正火冷却过程中的热应力估计──偏微分方程数值解法的应用 |
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| 引用本文： | 张瑗.轧辊正火冷却过程中的热应力估计──偏微分方程数值解法的应用[J].辽宁科技学院学报,1999(2). |
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| 作者姓名： | 张瑗 |
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| 作者单位： | 本溪冶专·高职专!辽宁本溪117022 |
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| 摘 要： | 用有限差分法模拟轧辊正火的冷却过程，得出温度场的一较大温度降低值，据此结果用有限单元法求出此时间内的场中各节点的位移；借以得出单元内的平均应力；且仅为热应力。然后进行热应力对轧辊断裂作用的分析讨论。
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| 关 键 词： | 热应力 差分节点温度降 单元刚度矩阵 整体刚度矩阵 单元节点位移 单元平均应力 |
Estimation of Thermal Stress in Cooling Process of Roller Normalization-Application of Numerical Solution to Partial Differential Equations |
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| Zhang Yuan.Estimation of Thermal Stress in Cooling Process of Roller Normalization-Application of Numerical Solution to Partial Differential Equations[J].Journal of Liaoning Institute of Science and Technology,1999(2). |
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| Authors: | Zhang Yuan |
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| Abstract: | Using the mdthod of finite difference to simulate the cooling process of roller normalization to obtain a large drop within temperature field, accodinglg, the displacements of each node in field may be found by the method of finite elements at that time. As a result, the average value of any elemental stress,namely thermal stress, may be found. Then comes a discussion on effect of thermal stress on roller disruption. |
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| Keywords: | Thermal stress Temperature drop of partial differential node Elemental stiffness matrix Bulk stiffness matrix Displacement of elemental node Average value of elemental stress |
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