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一前言作者在前文中运用文献中具有小挠度的圆形薄板对称弯曲性质理论,探讨并提出了冲裁加工中薄刃口组合圆形凹模强度的计算公式,并介绍了初步生产试用的验证情况。前文中已指出,计算公式中忽略了剪应力的影响,这个问题有待于进一步研究。具有小挠度的薄板弯曲理论是建立在三个假设条件上的。其中之一是不考虑横向剪应力对板弯矩的影响。忽略后对薄刃口组合圆凹模结构、所取的力学模型及求解结果究竟有多大
A preface The author in the previous article using the literature with small deflection of circular thin plate symmetry bending property theory to discuss and put forward the punching process combination of thin edge circular die strength formula, and introduced the preliminary production of the test to verify the situation . It has been pointed out in the previous article that the influence of shear stress is neglected in the calculation formula and this issue needs further study. The thin-plate bending theory with small deflection is based on three assumptions. One of them is to ignore the influence of transverse shear stress on the bending moment of plate. After ignoring the thin edge combination of circular die structure, the mechanical model taken and how much the results of the solution