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国内关于吊钩及环首的设计资料,多数来源于苏联《机械制造者手册》和“ΓOCT”6627—66。其计算公式虽然精确,但使用很不方便。如图1所示曲梁,其最大正应力公式可写成
Most of the domestic design information on hooks and hoops comes from the Soviet Union’s Machinery Manufacturers Handbook and ΓOCT 6627-66. Although its calculation formula is accurate, it is very inconvenient to use. As shown in Figure 1 curved beam, the maximum normal stress formula can be written as