Based on the strain energy model presented by Sun-Zhang and the energy conversion and energy conservation,a new semicontinuum model is presented to calculate the nature frequency of a nanoscaled clamped-clamped silicon beam.
基于Sun-Zhang提出的应变能量计算模型,根据动势能转换与守恒原理,提出了用于分析硅纳米梁基波频率的半连续体模型。
Therefore,the transformation was carried out,that is,the rolling line of Ф650mm×1/Ф550mm×1/Ф550mm×4 is disposed to semi-tandem rolling and high rigidity rolling mills is used for finish rolling etc,so the size precision of the products is increased and the size defective index is reduced.
通过对轧线Ф650mm×1/Ф550mm×1/Ф550mm×4进行半连轧布置、精轧机组应用高刚度轧机等改造,提高了合金钢大棒的尺寸精度,使尺寸废品率从0。
