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Crushing type fender support and design method thereof

A design method and fender technology, applied in the superstructure sub-assemblies, vehicle components, pedestrian/occupant safety arrangement, etc., can solve the body strength attribute pedestrian protection safety conflict, affect the customer's sensory experience, insufficient body rigidity, etc. problems, to achieve the effect of saving development time and R&D costs, reducing pedestrian injuries, and reducing head-shaped injuries

Pending Publication Date: 2022-07-01
JIANGLING MOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technology uses the sheet metal structure to simply weaken the support stiffness, but this is contrary to the stiffness required by the body design. In the engineering design stage, the pedestrian protection performance can only be satisfied by sacrificing the stiffness properties, which may easily lead to insufficient body stiffness. , affect the customer's sensory experience
Therefore, in reality, the strength attribute of the vehicle body often conflicts with the safety of pedestrian protection

Method used

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  • Crushing type fender support and design method thereof
  • Crushing type fender support and design method thereof
  • Crushing type fender support and design method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] see Figures 1 to 3, the present invention provides a destructible fender bracket, including a destructible bracket structure 1 and an indestructible bracket structure 2, the destructible bracket structure 1 and the indestructible bracket structure 2 are both mirror-symmetrical structures, and the destructible bracket structure Both 1 and the indestructible stent structure 2 are made of plastic material. It should be noted that using plastic materials, compared with metal materials, on the one hand, it is easier to achieve a lower crushing force, and on the other hand, the crushing force can be easily changed (the size of the crushing force of the metal bracket). relatively fixed), so the cost of design changes is lower, and the maintenance economy is also better. The bottom end of the destructible support structure 1 and the top end of the indestructible support structure 2 are connected, so that the destructible structure 1 and the indestructible support structure 2 ...

Embodiment 2

[0048] see Figure 5 , the present invention also provides a method related to a collapsible fender bracket, which specifically includes the following steps:

[0049] Step S1, establishing a three-dimensional geometric model of the analysis object through three-dimensional software according to the design size;

[0050] The object of analysis includes the fender, the collapsible fender bracket, the front nacelle, the frame and the hood, and the collapsible fender bracket structure is as shown in Example 1, wherein the collapsible fender The distance between the middle part of the first bottom connecting plate 104 of the bracket and the top supporting part 101 is H1, and the distance between the top of the fourth supporting leg 203 connecting with the second supporting leg 103 and the second bottom connecting plate 105 and the second bottom supporting part 204 is H2, the angle between the top support part 101 and the second support leg 103 is set to α, and assign values ​​to H...

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Abstract

The invention discloses a collapsible fender support and a design method thereof.The fender support comprises a collapsible support structure and a non-collapsible support structure, and the bottom end of the collapsible support structure is connected with the top end of the non-collapsible support structure, so that the collapsible support structure and the non-collapsible support structure form a polygonal structure with an opening in the bottom end; a collapsible connecting part is arranged at the bottom end of the destructible support structure, so that the collapsing direction of the fender support structure is consistent with that of the open end of the support, and a sustainable optimization design development method is provided by combining finite element model simulation analysis with a real object verification test; energy is transmitted to the crushable connecting part through the fender support, so that the crushable connecting part is broken, part of impact energy is absorbed, the crushable connecting part can be crushed according to the set direction, and the purposes of reducing damage to pedestrians and meeting the performance requirements of pedestrian protection are achieved.

Description

technical field [0001] The invention relates to the technical field of automobile production, in particular to a collapsible fender support and a design method thereof. Background technique [0002] In recent years, with the rapid development of social science, technology and economy, the number of automobiles has exploded, and a large number of collisions between automobiles and pedestrians occur every year. The pedestrian protection performance of automobiles has gradually attracted more and more people's attention and Attention, pedestrian protection regulations have been formulated and implemented in Europe and Japan for a long time. Based on the Global Technical Standard for Pedestrian Collision Protection (GTR), my country also released the national recommended standard GB / T 24550 "Car-Pedestrian Collision Protection" in 2009, and CNCAP also added pedestrian protection to the 2018 version of the evaluation procedures, and the requirement for pedestrian protection to scor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/18B60R21/34
CPCB62D25/18B60R21/34
Inventor 吁童侯聚英徐莉陈冬民袁杰
Owner JIANGLING MOTORS
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