The formula of tube expanding force is deduced using the slab method.
采用主应力法推导圆管扩径时扩径力的解析式。
The distributed pressure on the interface was obtained using the slab method. Analytic formula of the microconvex surface of plano-sizing die for long rectangular plate has been derived.
利用主应力法求出接触面上的分布压应力，导出了平面精压长矩形板模具表面微凸面形状的解析公式。
The section design method of slab strips for reinforced concrete and post tensioned concrete slabs is discussed in detail.
详细讨论了基于有限元分析的钢筋混凝土和预应力混凝土楼板的板带截面设计方法。
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