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Theoretical analysis of three-point bending with flattening of tube

机译:管子扁平化三点弯曲的理论分析

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Three-point bending behavior of a tube is calculated by the energy method. This calculation includes not only flattening by the bending moment but also flattening by pressing of the punch at a loading point. The calculated results agree with the results obtained by the three-point bending test. In particular, the maximum bending load can be estimated accurately by this calculation method. The optimum size of the tube under the same cross section area was determined by this calculation method. The maximum bending load increases with increasing diameter, but it is smaller in the case of extremely large diameter because of flattening. This optimum size of the tube is not influenced by the cross section area but by the span of bending.
机译:管的三点弯曲行为是通过能量方法计算的。该计算不仅包括通过弯矩进行平坦化,而且还包括通过在负载点处按压冲头进行平坦化。计算结果与通过三点弯曲试验获得的结果一致。特别地,通过该计算方法可以准确地估计最大弯曲载荷。通过该计算方法确定在相同横截面积下的管的最佳尺寸。最大弯曲载荷随着直径的增加而增加,但是在直径极大的情况下由于弯曲而减小。管的最佳尺寸不受横截面积的影响,而受弯曲范围的影响。

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