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Internal force path geometrical morphology based low-carbon material-saving bearing structure design method

A technology of load-bearing structure and internal force path, which is applied in computing, special data processing applications, instruments, etc., and can solve problems such as cumbersome and complex algorithms

Active Publication Date: 2013-04-24
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the cumbersome and complicated description and algorithm of topology optimization, some key technologies are still in the stage of exploration and development.

Method used

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  • Internal force path geometrical morphology based low-carbon material-saving bearing structure design method
  • Internal force path geometrical morphology based low-carbon material-saving bearing structure design method
  • Internal force path geometrical morphology based low-carbon material-saving bearing structure design method

Examples

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Embodiment

[0047] Taking a square plate fixed at one end and loaded by a concentrated force at the midpoint of the other end as an example, the specific implementation steps of this method are introduced (such as figure 2 ).

[0048] 1) Define the value range of the elastic modulus of the material in the finite element model, that is, the maximum value E max and minimum E min ; and the optimal ratio, that is, the ratio β of the material that needs to be retained. In this example, the maximum value E of the elastic modulus of the material is set max Set to 5e5Pa. Set the minimum E min is close to 0, but it must be large enough so that it will not be ignored in finite element analysis, take E min =1Pa. In addition, the areas that are subjected to concentrated loads and are constrained are considered structural features and must be preserved, so the elastic modulus of the first layer elements near these areas is defined as the maximum value E max And changes are not allowed.

[004...

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Abstract

The invention discloses an internal force path geometrical morphology based low-carbon material-saving bearing structure design method. The method includes that material modulus (such as elasticity modulus) of a bearing structure serves as low-carbon material-saving oriented design variable, a numerical method is used for solving to obtain internal force path geometrical morphologies (including degree of density and curvature) so as to punish unit elasticity modulus, an optimal force transferring path of the bearing structure is obtained by means of loop iteration, and based on the optimal force transferring path, a basic bearing framework and space requirements of a structure are defined. The method applies correlation theories of an internal force path to structural topological optimized design, and provides a novel idea for low-carbon material-saving design of major equipment bearing structures.

Description

technical field [0001] The invention belongs to the field of structural topology optimization design, and relates to a low-carbon material-saving design method of a load-bearing structure based on the geometric form of an internal force path. Background technique [0002] Heavy-duty and super-heavy-duty manufacturing equipment is a complex integrated system that incorporates a variety of disciplines and technologies. As the product structure becomes more complex and the limit of the service environment becomes more and more obvious, customers are more concerned about the "global high rigidity" of the product in the working process. The requirements are also getting higher and higher. At the same time, under the current situation of "low-carbon" development, the "lightweight performance" of large-scale manufacturing equipment will gradually become an important assessment index for measuring "resource and energy consumption". Under such a development trend, more and more desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 李宝童洪军邱志惠赵静王哲琳甄宜超闫素娜
Owner XI AN JIAOTONG UNIV
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