Flexible tool structure with changeable stringer positions

Abstract

The invention belongs to the technical field of experiment tools of main bearing components of aerospace structures and relates to a flexible tool structure with changeable stringer positions. The structure comprises an upper end frame, a lower end frame and horizontal and vertical stringers with changeable positions, wherein the vertical stringers with changeable positions are used for simulating experiment load distribution condition. By changing the distribution angles of the vertical stringers, the designability of the rigidity distribution of the flexible tool can be achieved; the rigidity distribution of the flexible tool is consistent with the rigidity distribution of the real boundary; the force transmission path of the experiment tool can be significantly improved; the accuracy of the check experiment of a cylindrical shell structure is improved. In addition, the flexible tool structure has the advantages of simple structure and low manufacturing cost.

Description

technical field [0001] The invention relates to the field of experimental tooling design for main load-bearing components of aerospace structures, and proposes a flexible tooling structure with variable beam positions. Background technique [0002] The experimental verification of the stiffness and strength of the projectile body section is an essential cross-section in the process of structural design. The experimental load is transmitted to the projectile body section to be checked through the experimental tooling, and the experimental load distribution is formalized. During the service process of the projectile body structure, the real load on the section is transmitted from its adjacent sections, forming a real load distribution. Whether the two load distributions are the same or not is related to the accuracy of the check experiment. The experimental load distribution in the form of traditional uniform tooling is usually uniform, but in order to meet the needs of equi...

AI Technical Summary

Problems solved by technology

However, with the large-diameter, thin-walled, and ultra-light design requirements of my country's heavy-duty launch vehicles and large aircraft, the large-diameter projectile body has a large diameter-to-thickness ratio, and the structural asymmetry is significant, and the structural deformation no longer meets the plane section assumption. , the traditional uniform experimental tooling can no longer meet the experimental load distribution requirements

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