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有限单元法在固体和结构力学中得到极其广泛的应用,本章应用最小势能原理推导了平衡方程,并研究了一维和二维问题的有限元弹性分析。文内例举了平面桁架的应用题解。
The finite element method is widely used in solid and structural mechanics. In this chapter, the equilibrium equation is deduced by using the principle of least potential energy. The finite element analysis of the one-dimensional and two-dimensional problems is also studied. The paper gives an example of the application of plane truss.