Method for analyzing load and stress distribution and stress levels of composite mechanical connection pins

A technology of mechanical connection and composite materials, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of complex modeling process, short calculation period, long calculation period, etc., to improve calculation efficiency and ensure calculation. The effect of precision, short calculation time

Inactive Publication Date: 2012-08-01
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

The simple two-dimensional plate and shell model method is a simplified simulation method, which has a short calculation period and can obtain nail load distribution results that meet engineering accuracy; Influenced by factors such as preload, nail-hole assembly clearance, friction, etc., and the interlayer stress cannot be obtained
The method of establishing a three-dimensi

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  • Method for analyzing load and stress distribution and stress levels of composite mechanical connection pins
  • Method for analyzing load and stress distribution and stress levels of composite mechanical connection pins
  • Method for analyzing load and stress distribution and stress levels of composite mechanical connection pins

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Embodiment Construction

[0036] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0037] The calculation process of the present invention is as figure 1 As shown, in order to better understand the technical solution of the present invention, the above algorithm is applied to the common analysis of the mechanical connection between the composite material plate and the metal plate. The analysis content is: nail load distribution calculation, and stress field analysis around the maximum nail load hole . The connector is a single lapped plate with three nails, as shown in Figure 2. The following steps are based on the finite element software ANSYS:

[0038] Step 1. According to the actual length and width of different plates to be connected, establish a geometric surface at the position of the respective middle plane, move the origin of the working plane to the position of the nail, rotate the working plane, and move the plane along the X directi...

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Abstract

The invention relates to a method for analyzing load and stress distribution and stress levels of composite mechanical connection pins, which is technically characterized by comprising the following steps of: establishing a two-dimensional shell beam model to calculate the load distribution of the connection pins, and taking out the bypass load of a rectangular region nearby a target pin from the two-dimensional model; newly establishing a three-dimensional physical model comprising target pins on the basis of the two-dimensional shell beam model according to geographic information, such as the size of the rectangular region, the sizes of bolts and the like; and calculating the three-dimensional model by taking the bypass load taken out from the two-dimensional model as the force boundary condition of the three-dimensional model through applying the pre-tightening forces of the bolts to obtain the stress distribution and the stress level of the region. According to the method for analyzing the load and stress distribution and the stress level of the composite mechanical connection pins, the advantages of a two-dimensional modeling method and a three-dimensional modeling method in a finite element model are fully performed, and thereby, a rapid and accurate computing method is provided for distribution calculation and stress analysis on the connection pins in project, and the design cost is reduced.

Description

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Claims

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Application Information

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Owner NORTHWESTERN POLYTECHNICAL UNIV
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