Method for calculating axial compressive stress of novel quadrilateral chiral honeycomb

A four-sided chiral and axial compression technology, 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, high precision, and simple analytical expressions Effect

Inactive Publication Date: 2015-12-02
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 la

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  • Method for calculating axial compressive stress of novel quadrilateral chiral honeycomb
  • Method for calculating axial compressive stress of novel quadrilateral chiral honeycomb
  • Method for calculating axial compressive stress of novel quadrilateral chiral honeycomb

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Embodiment Construction

[0020] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0021] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, 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 stress of a novel...

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Abstract

The invention provides a method for calculating axial compressive stress of a novel quadrilateral chiral honeycomb. The method comprises the following steps: step 1, based on geometric configuration of the quadrilateral chiral cell-element honeycomb, calculating total energy absorbed by a telescopic unit; step 2, calculating total energy absorbed by four additional plane units; and step 3, based on the total energy absorbed by the telescopic unit and the total energy absorbed by the four additional plane units, which are calculated in the steps 1 and 2, calculating the axial compressive stress of the quadrilateral chiral cell-element honeycomb under axial compression according to an energy conservation principle. According to the method, a theoretical method for calculating the axial compression stress is given out in combination with a super folding unit theory based on the energy conservation principle, and the axial compression of the quadrilateral chiral cell-element honeycomb is simulated by applying a finite element simulation technology, so that the correctness of the theoretical calculation method is verified.

Description

technical field [0001] The patent of the present invention relates to a quadrilateral chiral cell honeycomb material, specifically a method for calculating the axial compressive stress of a quadrilateral chiral novel honeycomb. Background technique [0002] Because of 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 the fields of aerospace and vehicle engineering. Honeycomb materials can absorb a large amount of impact energy when subjected to axial impact. 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 their performance design. [0003] The axial impact mechanical properties of honeycomb structure are closely related to its geometric configuration. In order to improve the energy absorption capacity...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 何强任杰马大为朱领忠姚建勇
Owner NANJING UNIV OF SCI & TECH
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