On the basic of all heat resistance and heat transfer law, the relation between optimum input power and refrigeration coefficient of irreversible stirling refrigerator as well as refrigeration rate and refrigeration coefficient is derived, and the effects of various factors on the two relations are discussed. 在考虑全部热阻和传热规律的情况下,导出了不可逆斯特林制冷机的最佳输入功率和制冷系数、制冷率和制冷系数之间的普遍关系,并讨论了各种因素对这两种关系的影响。
On the supposition that the shear resistance increases linearly with shear displacement between the bolt and surrounding soil, a calculation model of load transfer with hyperbolic function is established. The distribution of frictional resistance and shear displacement along the anchoring length and the influence factors are obtained. 假定锚固体与锚杆周围岩(土)体之间的剪力与剪切位移呈线性增加关系,建立锚杆荷载传递的双曲函数模型,获得了锚杆摩阻力和剪切位移沿锚固长度的分布规律及其影响因素。