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本文介绍了有限单元法的历史及其在各种工程问题中的广泛应用,讨论了有限单元法的普遍适用性和一般性描述。通过三个实例说明有限单元法的解题步骤,这三个实例是固体力学中的阶梯杆的应力分析,热传导中杆内的温度分布和流体力学中的管内的非粘性流动。
This article introduces the history of finite element method and its wide application in various engineering problems, and discusses the general applicability and general description of finite element method. The problem-solving steps of the finite element method are illustrated by three examples of stress analysis of step bars in solid mechanics, temperature distribution in the rod during heat conduction, and non-viscous flow in the tube in fluid mechanics.