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Method for calculating axial compressing stress of curve cell honeycomb

A technology of axial compression and cell, applied in computing, special data processing applications, instruments, etc., can solve problems such as lack of understanding of dynamic mechanical properties, achieve good engineering value and application prospects, simple analytical expressions, and high reliability Effect

Inactive Publication Date: 2017-03-01
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, the current research work is mainly focused on predicting its quasi-static mechanical properties and explaining its deformation mechanism, and there is still a lack of understanding of the dynamic mechanical properties of it when it is used as an energy-absorbing device material under external axial impact in practical applications.

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  • Method for calculating axial compressing stress of curve cell honeycomb
  • Method for calculating axial compressing stress of curve cell honeycomb
  • Method for calculating axial compressing stress of curve cell honeycomb

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Embodiment Construction

[0020] In order to better understand the technical content of the present invention, specific embodiments are given and described below in conjunction with the accompanying drawings.

[0021] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in greater detail below, can be implemented in any of a number of ways, as the concepts and embodiments disclosed herein do not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0022] According to an embodiment of the present invention, a method for calculating the axial compressive str...

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Abstract

The invention provides a method for calculating the axial compressing stress of a curve cell honeycomb. The method for calculating the axial compressing stress of a curve cell honeycomb comprises the following steps: step 1, calculating the total energy absorbed by a folding unit based on the geometry of a curve cell honeycomb while the two arc sections of the basic folding unit are axially compressed and non-axisymmetrically curved; step 2, calculating the total energy absorbed by an additional vertical plane unit; step 3, obtaining the axial compressing stress of the curve cell honeycomb while the curve cell honeycomb is axially compressed based on the step 1 and 2 calculation results mentioned above according to the principle of conservation of energy. The calculating method of the axial compressing stress of a curve cell honeycomb is based on the principle of conservation of energy, and combines with the Super Folding Element theory so as to provide a theoretical method of calculating the axial compressing stress of a curve cell honeycomb, and the scene that the curve cell honeycomb is axially compressed is simulated by means of the finite element simulation technology, so that the validity of the theoretical calculating method is proved.

Description

technical field [0001] The patent of the present invention relates to the technical field of curved cellular honeycomb materials, in particular to a method for calculating the axial compressive stress of a curved cellular honeycomb. Background technique [0002] Due to its light weight and good energy absorption properties, honeycomb materials are often used to make various energy absorption or buffer devices, and are widely used in aerospace and vehicle engineering. When the honeycomb material is subjected to axial impact, it can absorb a large amount of impact energy. With the increasing application of honeycomb materials in protective structures, the research on the axial compression characteristics of honeycomb materials during impact has become one of the key issues in its performance design. [0003] The axial impact mechanical properties of honeycomb structures are closely related to their geometrical configurations. In order to improve the energy absorption capacit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 何强马吴宁乐贵高马大为任杰
Owner NANJING UNIV OF SCI & TECH
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