Tubular object deformation detection method

The invention discloses a tubular object deformation detection method. The method comprises the following steps: (1) establishing a finite element analysis model of a tubular object; (2) applying load and constraint, simulating actual working conditions, and calculating to obtain theoretical deformation data and deformation distribution data; (3) determining a deformation detection measuring point of the tubular object according to the theoretical deformation distribution data; (4) under the actual working condition, the deformation amount of the deformation detection measuring point is measured, and measurement data is obtained; and (5) comparing the theoretical deformation data with the measurement data, performing error analysis, and determining the theoretical deformation data as the final deformation if the error is less than or equal to an error limit value. According to the method, two methods of experimental measurement verification and finite element analysis are combined, tubular object deformation