Method for generating wing by adopting active structure rigidity method

Abstract

The invention discloses a method for generating a wing by adopting an active structure rigidity method. The method is characterized by comprising the following steps of: 1, determining rigidity index; 2, designing a structure; and 3, comparing errors. In the initial stage of the active structure rigidity design method, the rigidity index is considered into the structure design, thus blindness of passive and half-passive structure rigidity designs can be avoided; according to the active structure rigidity designing method, the structure design level of products can be improved, the structure design quality is improved, the type researching period is shortened, the type researching cost is reduced; according to the active structure rigidity designing method, an optimal structure according with the requirement can be designed according to the demands, the designing method is more scientific and rigorous; and according to the active structure rigidity design, the structure design level of the product can be improved, the structure design quality is improved, the type researching period is shortened, and the type researching cost is reduced. More importantly, according to the active structure rigidity design, the structure design idea is more scientific and rigorous.

Description

technical field [0001] The invention belongs to the technical field of aerospace and relates to a method for generating wings by adopting an active structure stiffness method. Background technique [0002] Stiffness is the ability of a material, component or structure to resist deformation under the action of an external force. Structural stiffness design includes a wide range of content, and stiffness is related to many factors such as material, force form, geometric shape, and boundary conditions. From the effect of load, structural stiffness can be divided into tension and compression stiffness, bending stiffness, shear stiffness and torsional stiffness. Different connection forms, combination methods, force transmission routes, and working environments of structures have different stiffness characteristics. The complexity of stiffness design brings many structural stiffness problems. [0003] The structural design should meet the strength and stiffness design requirem...

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Problems solved by technology

[0006] (1) The number of structural components increases, and the continuity of the structure is not good, which leads to a decrease in structural stiffness, discontinuous distribution of structural stiffness, and difficulty in controlling the distribution of stiffness

[0007] (2) The number of connectors and connecting surfaces of the structure increases, and the connection relationship of the structure is complicated. In this way, the stiffness characteristics of the structure will change greatly at the structural connection, which will cause the internal force transmission and structural deformation of the structure to change, making the overall structure large variations in stiffness and local stiffness

[0008] (3) The deformation and rotation angle of the structure are only given vague expressions in the aircraft design specifications and airworthiness regulations, such as "the deformation should not be too large", but the specific size or percentage is not clearly given. bring some difficulties

[0010] (5) For large aircraft, there are also factors closely related to structural stiffness such as structural instability and large openings that need to be considered, and these factors will affect the quality of structural design

[0011] Through the previous analysis of the structural stiffness design, it can be seen that the structural stiffness design is related to many actual performances and functions of the structure and even the product, and the passive or semi-passive structural stiffness design invisibly increases the design workload and at the same time Affect design progress and increase design overhead

More importantly, the methods and ideas of passive structural stiffness design are not scientific and rigorous enough, and have a certain degree of blindness

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