Manufacture method of vibration enveloping body of automobile exhaust pipeline

The invention discloses a manufacture method of a vibration enveloping body of an automobile exhaust pipeline. The method comprises the following steps: (1) collecting parameter data; (2) computing the maximum displacement, relative to an initial state, of an extracting point in the exhaust pipeline in an extreme condition through computer simulation software; (3), manufacturing the vibration enveloping body of the automobile exhaust pipeline through three-dimensional drawing software according to the maximum displacement of the extracting point computed in the second step. The method simulates the vibration state of exhausted gas in the extreme load condition through a computer simulation technology, and manufactures the enveloping body more correspond with the practical vibration state through the three-dimensional drawing software, thereby being applied to the judgment of exhaust pipeline early stage arrangement, reducing the project risk, and reducing the waste of development cost of newly developed vehic