Method for optimized analysis of composite material reinforced wall plate structures

Abstract

The invention belongs to a material analysis technology, and relates to a method for optimized analysis of composite material reinforced wall plate structures. According to the method, optimized analysis is carried out on the composite material reinforced wall plate structures in two stages: stage 1: carrying out topological optimization on fillet arrangement on a composite material reinforced structure so as to determine a fillet arrangement position and a reinforcing form; and stage 2: further carrying out laying optimization on the basis of the optimization in the stage 1 so as to determine a laying angle and a laying thickness, and then further lightening the weight of the structure. Through the optimization of the two stages, a high-efficiency composite material reinforced wall plate structure is obtained. According to the method provided by the invention, a composite material reinforced wall plate structure form with higher efficiency can be obtained through two processes of topological optimization and laying optimization, the security and reliability of the composite material structure can be ensured, the weight of the structure can be lightened by more than 20%, the blindness of the design is avoided, and the design requirements can be realized with relatively economic weight and cost, so that the aircraft development period can be shortened, and remarkable economic benefit and social benefit can be obtained.

Description

technical field [0001] The invention belongs to material analysis technology, and relates to a structure optimization analysis method of a composite material reinforced wall plate. Background technique [0002] Composite materials are characterized by strong anisotropy and designability. Only by optimizing the design according to the structural characteristics can the design requirements be met more efficiently. The stiffened panel structure is a commonly used structural form on aircraft. For metal structures, due to the isotropic characteristics, the optimization analysis of rib position, form and thickness can be completed at the same time. For composite materials, due to the It has the characteristics of anisotropy. Its structural form is laid layer by layer, and the angle of each layer may be different. It is impossible to directly analyze the position and form of the ribs, as well as the angle and thickness of the layer. Therefore, the existing composite material reinfo...

AI Technical Summary

Problems solved by technology

The stiffened panel structure is a commonly used structural form on aircraft. For metal structures, due to the isotropic characteristics, the optimization analysis of rib position, form and thickness can be completed at the same time. For composite materials, due to the It has the characteristics of anisotropy. Its structural form is laid layer by layer, and the angle of each layer may be different. It is impossible to directly analyze the position and form of the ribs, as well as the angle and thickness of the layer. Therefore, the existing composite material reinforced wall The plate structure optimization analysis method is only after the designer has arranged the reinforcement of the composite material, and the strength analyst optimizes the layup of the structure

Since the arrangement of ribs mainly depends on the experience of designers, the advantages of composite materials cannot be fully utilized

Images