Method for determining rigidity of interference connection structure of composite laminated plate
A composite material layer and connection structure technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of complex stress state, bolt connection stress concentration, lack of reliable guidance, etc.
Pending Publication Date: 2022-07-15
CHINA AIRPLANT STRENGTH RES INST
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[0002] In engineering, composite laminates are mostly connected by bolts. In order to solve the problem of stress concentration in bolted connections, they are improved to interference connections. The bolts are in close contact with the bolt holes on the composite materials, forming a contact surface for load transfer. The stress state is complex. The overall stiffness of the structure has an important impact. Currently, there is a lack of a method that can accurately evaluate its overall stiffness, and there is a lack of reliable guidance for the application of this structure.
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[0114] In order to make the technical solution of the present application and its advantages more clear, the technical solution of the present application will be further described in detail and completely with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the present application. The examples are only used to explain the present application, but not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, and other related parts may refer to the general design. If there is no conflict, the embodiments in the present application and the techniques in the embodiments Features can be combined with each other to obtain new embodiments.
[0115] Also, unless otherwise defined, the technical or scientific terms used in the description of this application shall have the ordinary meaning as...
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Abstract
The invention belongs to the technical field of composite material laminated plate interference connection structure rigidity determination, and particularly relates to a composite material laminated plate interference connection structure rigidity determination method which comprises the steps that the rigidity Kc1 of a first composite material laminated plate and the rigidity Kc2 of a second composite material laminated plate are calculated; calculating the rigidity Kb of the bolt; calculating the maximum friction force fc between the first composite material laminated plate and the second composite material laminated plate; calculating the displacement x3 of the stress end of the second composite material laminated plate; and calculating to obtain the rigidity F / x3 of the interference connection structure of the composite laminated plate.
Description
technical field [0001] The present application belongs to the technical field of determining the stiffness of the interference connection structure of composite material laminates, and particularly relates to a method for determining the stiffness of the interference connection structure of composite material laminates. Background technique [0002] In engineering, the composite laminates are mostly connected by bolts. In order to solve the problem of stress concentration in the bolted connection, it is improved to an interference connection. The bolts are in close contact with the bolt holes on the composite material, forming a contact surface load transmission, and the stress state is complex. The overall stiffness of the structure has an important impact, and there is currently a lack of a method that can accurately evaluate its overall stiffness, and a lack of reliable guidance for the application of this kind of structure. [0003] The present application is made in vie...
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IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0017G01N2203/0075G01N2203/0218
Inventor 邹鹏邓凡臣毕雪杨钧超雷安民陈向明
Owner CHINA AIRPLANT STRENGTH RES INST