A bionic negative Poisson's ratio structure automobile protection system and design method

A negative Poisson's ratio, protective system technology, applied in computing, instrumentation, geometric CAD, etc., can solve problems such as crush deformation, low compressive strength, and occupants are easily injured, and achieve improved efficiency, high precision, and reduced optimization. The effect of efficiency

Inactive Publication Date: 2019-12-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] Aiming at the disadvantages in the prior art that the roof of a car has low compressive strength during a car rollover and collision, it is prone to crush deformation and the occupants are easily injured, and proposes a bionic negative Poisson's ratio structure car protection system and design method , improve the compressive strength of the car roof, significantly enhance the protection of occupants

Method used

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  • A bionic negative Poisson's ratio structure automobile protection system and design method
  • A bionic negative Poisson's ratio structure automobile protection system and design method
  • A bionic negative Poisson's ratio structure automobile protection system and design method

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Embodiment Construction

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like figure 1 , figure 2 As shown in the figure, the present invention discloses a bionic negative Poisson's ratio structure automobile protection system, comprising an upper roof 1, a lower roof 2 and a beam, the upper roof 1 and the lower roof 2 are connected together by the beam, and the upper roof 1 and the lower roof 2 are connected together by the beam, and the upper roof 1 and the lower roof 2 are connected together by the beam, The connection method of the roof 1 and the lower roof 2 and the beam is welding, and the bionic negative Poisson's ratio structure is installed inside the upper roof 1 and the lower roof 2 to fill the inner core 5, wherein the bionic negative Poisson's ratio structure fills the inner core 5 and the upper car. The top 1 and the lower roof 2 are connected, and the connection method is an adhesive ...

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Abstract

The invention discloses a bionic negative poisson's ratio structure automotive protection system. The system comprises an upper roof and a lower roof, wherein the upper roof and the lower roof are welded together through a cross beam, and bionic negative poisson's ratio structure filling cores are installed inside the upper roof and the lower roof; the bionic negative poisson's ratio structure filling cores installed in the roofs effectively absorb collision energy of an automobile during rolling crash by means of the special energy characteristic of a negative poisson's ratio structure, and improve the compressive strength of the roofs of the automobile, so that passengers can be better protected and the passive safety of the automobile can be improved. The invention further discloses a method for designing the bionic negative poisson's ratio structure automotive protection system. By the adoption of the method, design parameters of the bionic negative poisson's ratio structure automotive protection system can be effectively designed according to different design targets and requirements, and energy absorbability and compression strength of the protection system are improved quickly and effectively on the premise that control and weight are effectively controlled.

Description

technical field [0001] The invention belongs to the field of automobile body safety, in particular to a bionic negative Poisson's ratio structure automobile protection system and a design method. Background technique [0002] As we all know, the car is prone to rollover accidents during driving due to mechanical failures, tire blowouts, subgrade collapse, high-speed sharp turns, collisions and potholes. When the car rolls over, especially the roof part of the car, under the impact of huge load, it is easy to produce large deformation due to crushing. The occupant's living space is significantly reduced. The traditional car roof usually has insufficient structural compressive strength, and a large deformation occurs in the car rollover accident, which severely squeezes the passenger compartment and easily causes great damage to the passenger; While being severely squeezed, it will also be impacted by external objects, which greatly increases the risk of occupants being inju...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/15
Inventor 周冠赵万忠王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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