An Elastic Connection Structure Adapting to Structural Thermal Matching

Abstract

The invention relates to an elastic connection structure adaptable to structural thermal matching, and belongs to the technical field of power technology connection and fixation. The present invention is an elastic connection force transmission structure that can adapt to structural thermal matching. Through the design of elastic connection, a balance point is found between the coordination and matching of stiffness and deformation, and the connection between two structures with a certain temperature difference is realized and effective The force transmission improves the connection stiffness when the cold and hot structures are connected, effectively releases the thermal deformation difference when the cold and hot structures are connected, and greatly reduces the vibration level of the thermal structure and the stress at the root of the thermal structure installation joint.

Description

technical field [0001] The invention belongs to the technical field of power technology connection and fixation, and in particular relates to an elastic connection structure adaptable to thermal matching of structures. Background technique [0002] At present, the connection and force transmission route between the engine and the aircraft are mostly rigid connection, that is, fixed support or hinged scheme, which has the advantages of reliable connection and clear force transmission route. However, when the temperature difference between the engine and the aircraft is large, the two need to undergo a large relative displacement during the working process. At this time, the rigid connection will cause local stress concentration and cause structural failure. Therefore, in the actual structural design, it must be able to achieve the effective transmission of load and stiffness at the same time, and also meet the needs of deformation coordination. [0003] For the connection of...

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Problems solved by technology

[0003] For the connection of two structures with a certain temperature difference and effective force transmission, the following two connection methods are generally adopted: 1. Completely release the deformation coordination amount ( figure 1 ); 2 adopt the method of over-static indeterminate over-constraint ( figure 2 ); the first connection scheme can effectively release thermal deformation, but for large structures, it often leads to structural failure due to insufficient restraint stiffness; the second scheme effectively improves the connection stiffness, but it is easy to cause local thermal deformation due to the inability to meet thermal deformation coordination. stress failure

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