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A Method for Analyzing the Skeleton Structure of Bonded and Riveted Composite Steel of Multi-material Body of Passenger Cars

A skeleton structure and analysis method technology, applied in geometric CAD, design optimization/simulation, special data processing applications, etc., to solve the inconsistency of failure process, improve simulation accuracy, and high consistency

Inactive Publication Date: 2020-09-15
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention designs and develops a method for analyzing the riveted composite structure of the multi-material body of a passenger car, and performs corresponding processing on the connecting parts, which solves the problem of the analysis accuracy of the combination of the riveted composite structure in the multi-material body with the whole vehicle

Method used

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  • A Method for Analyzing the Skeleton Structure of Bonded and Riveted Composite Steel of Multi-material Body of Passenger Cars
  • A Method for Analyzing the Skeleton Structure of Bonded and Riveted Composite Steel of Multi-material Body of Passenger Cars
  • A Method for Analyzing the Skeleton Structure of Bonded and Riveted Composite Steel of Multi-material Body of Passenger Cars

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Embodiment

[0059] Taking the simulation of the riveted composite structure on the local curved beam of the passenger car as an example, the specific implementation process of the present invention is described in detail:

[0060] Such as figure 1 As shown, consider the unit types used in each part of the bonded riveting composite structure in the subsequent CAE analysis process: the body steel skeleton in the curved beam adopts shell elements, the rivets adopt solid elements, the adhesive layer adopts cohesive force elements, and epoxy resin-based carbon fiber reinforcement Composite materials (CFRP) use thick shell elements to establish the shell geometry model of the outer surface of the steel skeleton entity.

[0061] Such as figure 1 , figure 2 As shown, the area that needs to be glued and CFRP is cut out in the shell. In order to facilitate the subsequent division of better quality meshes, the area that needs to be glued and CFRP in the above shell needs to be further cut. Cuttin...

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Abstract

The invention discloses a passenger car multi-material car body bonding and riveting composite steel skeleton structure analysis method. The method comprises the steps that 1, an area needing glue spreading and epoxy resin-based carbon fiber reinforced composite material spreading is cut out of a to-be-bonded-riveted composite structure steel skeleton structure on a vehicle body, and an area withthe half unit size is cut out of the outer side of each junction of the area; Step 2, dividing unit positions on the vehicle body; Step 3, stretching and bonding the composite structure steel skeletonstructure, marking the positions divided in the step 2, respectively stretching the areas where the glue is laid and the epoxy resin-based carbon fiber reinforced composite material is laid, markingthe positions divided in the step 2, and comparing the positions marked twice; Step 4, determining attributes and failure criteria of the glue spreading layer, the rivet, the epoxy resin-based carbonfiber reinforced composite material spreading layer and the steel skeleton material; And 5, carrying out load test and comparative analysis on the steel skeleton structure of the adhesive-riveting composite structure.

Description

technical field [0001] The invention relates to the technical field of computer-aided engineering, in particular to an analysis method for a passenger car multi-material car body bonded riveting composite steel skeleton structure. Background technique [0002] With the development of my country's public transportation industry and the rapid increase of residents' demand for public travel, it has brought problems in terms of fuel economy, driving safety, environmental protection, and resource utilization for public transportation. With the increasingly prominent issues of energy saving and environmental protection, the development of energy saving and emission reduction has become the focus of attention in the field of automobile industry at home and abroad. Statistics show that for every 10% reduction in vehicle weight, fuel consumption can be reduced by 6% to 8%. Therefore, the lightweight research of the body plays a vital role in the energy saving, emission reduction and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/15
CPCG06F30/15G06F30/20
Inventor 那景新谭伟栾建泽刘浩垒申浩高原吴长风浦磊鑫杨佳宙任俊铭
Owner JILIN UNIV
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