The paper suggested a draw bead model in which Bauschinger effect and incline of neutral layer were taken into account.
建立了考虑板料中性层偏移、包辛格效应等因素的拉延筋解析模型。
And then, by using the upper and lower vertices' position of neutral layer, the anti-bend rate was determined by curve fitting method.
再利用中性层上下顶点处的位置，用曲线拟合的方法确定出了板材在矫直过程中的反弯曲率；
Traditional theory has not considered the influence of the neutral layer inside displacement on bending springback when analyzing the springback.
传统理论在分析回弹时，没有考虑应变中性层内移对回弹的影响。
The computation expression for the strain neutral layer of stress and plastic bending was introduced and so the thinning coefficient computing formula of sheet metal was deduced.
给出了板料弯曲的应力应变中性层和纯弯曲应变中性层的计算公式，并推出板料弯曲时的变薄系数计算公式。
The results also show the strain is linear distributing along the section height of semi-rigid base, and the neutral layer of the beam specimen is lower than its geometrical center.
半刚性基层的正应力沿截面高度呈线性分布，合成大梁试件的中性层低于其几何形心。
Due to the distinct difference in tensile and compressive properties, the position and deformation curvature of curved neutral layer will change with time for the! Strata in a creep state.
由于岩石材料抗拉与抗压性能的明显差异，使岩层受蠕变作用时，其弯曲中性层位置及变形曲率都将随时间变化。
Due to the distinct difference in tensile and compressive properties, the position and deformation curvature of curved neutral layer will change with time for the! Strata in a creep state.
由于岩石材料抗拉与抗压性能的明显差异，使岩层受蠕变作用时，其弯曲中性层位置及变形曲率都将随时间变化。
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