A flexible tooling structure with variable stringer position

Abstract

Disclosed is a flexible tooling structure with stringers having changeable positions, which belongs to the technical field of experiment tooling of main bearing members of aerospace structures. The flexible tooling structure comprises a flexible tooling upper end frame (1), a flexible tooling lower end frame (2), flexible tooling transverse stringers (3) and flexible tooling longitudinal stringers (4). The flexible tooling longitudinal stringers (4) having changeable positions are used for simulating experiment load distribution conditions. By changing the distribution angles of the longitudinal stringers (4), the designability of the rigidity distribution of the flexible tooling can be achieved such that the rigidity distribution of the flexible tooling is consistent with the rigidity distribution of the real boundary, so that the force transmission path of the experiment tooling is significantly improved, and the accuracy of the check experiment of a cylindrical shell structure is improved.

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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