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Pedestrian protection-based automobile energy absorption column A and optimization method thereof

A technology of pedestrian protection and optimization method, which is applied in design optimization/simulation, geometric CAD, special data processing applications, etc. Head injury, the effect of improving crashworthiness

Active Publication Date: 2017-08-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose an automobile cushioning and energy-absorbing A Pillar and optimization method, on the basis of ensuring crashworthiness, protect the head of pedestrians

Method used

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  • Pedestrian protection-based automobile energy absorption column A and optimization method thereof
  • Pedestrian protection-based automobile energy absorption column A and optimization method thereof
  • Pedestrian protection-based automobile energy absorption column A and optimization method thereof

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0034] Such as figure 1 As shown, the present invention discloses an automobile buffer energy-absorbing A-pillar based on pedestrian protection, including a left A-pillar and a right A-pillar; the left A-pillar and the right A-pillar are symmetrically distributed with respect to the center line of the vehicle, Both include an inner shell, an outer shell, and an inner core; the inner shell, outer shell, and inner core of the left A-pillar and the right A-pillar are all made of carbon fiber materials, and the inner core is made of a three-dimensional concave hexagonal negative Poisson's ratio unit cell Arrayed.

[0035] The inner shell and the outer shell of the left A-pillar and the right A-pillar have the same wall thickness, and the left A-pillar and the right A-pillar are connected to the corresponding parts of the automobile through glue bondin...

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Abstract

The invention discloses a pedestrian protection-based automobile energy absorption column A and an optimization method thereof. The automobile energy absorption column A comprises a left-side column A and a right-side column A, wherein the left-side column A and the right-side column A are symmetrically distributed on a vehicle center line, and respectively comprise an inner shell, an outer shell and an inner core; the inner shells, the outer shells and the inner cores of the left-side column A and the right-side column A are made of a carbon fiber material; and the inner cores are formed by three-dimensional indented hexagonal negative Poisson's ratio single-cell arrays. The invention furthermore discloses the optimization method of the automobile energy absorption column A; after optimization, two working conditions such as automobile-pedestrian collision and automobile front collision can be considered, so that the automobile crashworthiness and lightweight are ensured under the premise of reducing the pedestrian head injury.

Description

technical field [0001] The invention relates to the field of automobile passive safety, in particular to an automobile buffer energy-absorbing A-pillar based on pedestrian protection and an optimization method thereof. Background technique [0002] On the one hand, the A-pillar is an important part of the car frame, and its crashworthiness must be considered when designing the car's A-pillar. plays a key role. At present, the crashworthiness of the A-pillar is mainly improved by changing the structural shape of the A-pillar and using high-strength steel. [0003] On the other hand, in the relevant regulations on pedestrian head protection, it is clearly pointed out that the A-pillar of the car is in the area where the collision between the head of the pedestrian and the car occurs. The current research on the A-pillar of automobiles considering pedestrian protection only uses non-rigid materials to improve the protection of pedestrians' heads, but it will reduce the crashw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F30/15Y02T10/40
Inventor 王春燕王崴崴赵万忠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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