Method for adaptively creating and updating three-dimensional model of satellite truss structure

Abstract

The invention provides a method for adaptively creating and updating a three-dimensional model of a satellite truss structure. The method comprises the steps of: establishing a skeleton model corresponding to the truss structure, and defining coordinates of truss joint center points and local reference coordinate systems attached to the center points in the skeleton model; connecting the joint center points end to end to form a wireframe configuration corresponding to the truss structure; defining a parametric rod piece template and carrying out truss rod piece substantial modeling and assembling; based on the joint center points, after importing rod piece parametric section geometric information concentrated to the same joint into a joint three-dimensional model, carrying out joint substantial modeling and assembling; and when the wireframe configuration in the skeleton is changed or the coordinates of the joint center points are updated, reconstructing a truss structure system or creating and updating structural elements again in an adaptive mode. According to the method provided by the invention, by the skeleton and reference consistency transfer of the truss structure, the structural elements driven by the skeleton and the parametric rod piece template are adaptively created and updated, so that independence and stability of the three-dimensional mode of a truss structure system are ensured.

Description

technical field [0001] The invention relates to the technical field of satellite truss structures, in particular to a method for adaptively creating and updating a three-dimensional model of a satellite truss structure. Background technique [0002] With the increasing demand for high load capacity and lightweight design of satellite structures, the composite truss structure has the advantages of excellent space opening performance, less restrictions on the size of the carrying envelope, and easy deployment or assembly on orbit. The structural system is usually a high-order statically indeterminate structure, which can effectively withstand multi-directional and multi-type coupling loads, and has good rigidity and integrity. It is especially suitable for applications in structures with large-span or even super-long-span installation requirements. From the perspective of application scope, the truss used in the satellite structure belongs to the generalized truss structure, i...

AI Technical Summary

Problems solved by technology

Although there are usually a large number of similar elements in the truss structure, the traditional modeling method can only model the assembly individually element by element, lacking the ability of adaptive rapid modeling for similar elements

[0005] (2) The complication trend of the truss structure system makes the internal connection relationship of the truss more and more complicated. More and more truss members are connected on the same truss joint, forming joints with extremely complex spatial configurations, which further increases the truss structure, especially the joints. 3D design modeling difficulty

The reference and assembly relationships are complex and diverse. At the same time, when the truss structure needs to adapt to changes in external requirements for reconstruction or updating, it may cause the failure of regeneration of the design model, and the adaptive update of the structural system that cannot adapt to changes in external requirements will significantly affect the truss. Stability of Structural System Models

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