Design method of a two-stage light gas gun test model

Abstract

The invention provides a design method of a secondary light-gas gun test model. The method comprises the following steps that the maximum load quantity in the shooting process is calculated according to the shooting mass and the shooting speed required by the shooting of the secondary light-gas gun test model, and the corresponding stress strain capacity of each component of the secondary light-gas gun test model during the maximum load quantity is calculated; the structure and the material of each component of the secondary light-gas gun test model are selected and determined, an initialization test model is obtained, in addition, a finite element analysis model is established, and the stress distribution and the strain distribution of each component in the load shooting process of the initialization test model are obtained; whether each component in the shooting process can fracture or not is analyzed, if so, at least one item of the structure or the material of the component is regulated, and in addition, the operation of rebuilding the finite element analysis model of the modified test module is returned; if not, the initialization test model is determined to be a target secondary light-gas gun test model. The design method has the advantage that the more ideal secondary light-gas gun test model can be obtained in a very short time.

Description

technical field [0001] The invention relates to the field of light gas guns, in particular to a design method for a test model of a two-stage light gas gun. Background technique [0002] The test model of the secondary light gas gun is usually designed by the method of test verification. After a basic design scheme is proposed, the reliability of the design scheme is verified through tests, and then improved according to the results of the verification test. The final design of the test model. [0003] In order to ensure the reliability of the structural strength of the test model during the launch process, a larger safety threshold is often adopted, which directly leads to a lower effective launch quality of the test model, and requires a longer verification cycle and high verification funds; when the test When the shape or internal structure of the model is relatively complex, the usual design methods cannot quickly and effectively obtain the ideal design scheme. [0004...

AI Technical Summary

Problems solved by technology

[0003] In order to ensure the reliability of the structural strength of the test model during the launch process, a larger safety threshold is often adopted, which directly leads to a lower effective launch quality of the test model, and requires a longer verification cycle and high verification funds; when the test When the shape or internal structure of the model is relatively complex, the usual design methods cannot quickly and effectively obtain the ideal design plan

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