螺栓应变测试在机匣静力试验中的应用

Application of Bolt Strain Test in Casing Static Test

为了对某型机匣内连接螺栓进行测量,以获得螺栓拧紧过程中轴向力的大小以及螺栓承受外载荷的大小,制作了一种专用的测力螺栓。通过螺栓拉伸试验拟合螺栓轴向力-应变的关系式和外载荷-应变的关系式,并将其应用于螺栓预紧力与承受载荷评估,获得机匣静载试验中螺栓的预紧力、轴力变化和承受的外载荷。

In order to obtain the axial tightening force and absorbing load of the connecting bolts in a casing, some special bolts are made. The relationship between the bolt’s axial force and the bolt’s strain and the relationship between the bolt’s absorbing load and the bolt’s strain obtained using the tensile test are applied to estimate the bolt’s axial tightening force, the bolt’s absorbing load during the diffuser casing static test.