Composite car energy absorption part and machining method thereof

A technology of energy absorption and composite materials, which is applied in vehicle parts, chemical instruments and methods, applications, etc., can solve the problems of high price of composite materials and restrictions on the promotion of energy absorption components of composite materials, and achieve reduced production costs, light weight, and relatively low cost. The effect of high energy absorption value

Inactive Publication Date: 2016-12-21
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is mainly because the price of high-strength and high-modulus composite materials is relatively high, and the price of energy-absorbing parts made of them is several times that of metal energy-absorbing parts, which restricts the promotion of composite energy-absorbing parts

Method used

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  • Composite car energy absorption part and machining method thereof
  • Composite car energy absorption part and machining method thereof
  • Composite car energy absorption part and machining method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: as Figure 1-3 As shown, this embodiment discloses an energy absorbing component for vehicles made of composite material, which is in the shape of a circular tube with a wall thickness of 1.8±0.1 mm and an inner diameter of the tube of 34 mm. It includes two first carbon fiber layers 1 , seven glass fiber layers 2 and two second carbon fiber layers 3 wound sequentially from inside to outside. The ratio of the volume of the glass fiber layer 2 to the sum of the volumes of the first carbon fiber layer 1 and the second carbon fiber layer 3 is about 7:4. One end of the tubular structure is provided with a 45° chamfer, and the other end is flat.

[0034] The processing method of the composite material vehicle energy absorbing part of the present embodiment comprises the following steps:

[0035] Step 1: Cut the carbon fiber fabric prepreg and glass fiber fabric prepreg to preset size;

[0036] Step 2: Wind the carbon fiber fabric prepreg onto the steel mandr...

Embodiment 2

[0051] Example 2, as a further improvement to Example 1, the glass fiber layer 2 is replaced by a basalt fiber layer, the curing temperature is 120°C, and the curing time is 2 hours; when the temperature drops to 40°C, demoulding treatment is performed. The specific energy absorption value of this embodiment is not lower than 110kJ / kg.

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Abstract

The invention discloses a composite car energy absorption part and a machining method thereof. The composite car energy absorption part is of a tubular structure and comprises a first carbon fiber layer, a glass fiber layer and a second carbon fiber layer which are sequentially wound from inside to outside. The ratio of the volume of the glass fiber layer to the sum of volume of the first carbon fiber layer and the second carbon fiber layer is greater than one. The machining method of the composite car energy absorption part comprises the steps that a fabric prepreg is cut; a carbon fiber fabric prepreg, a glass fiber fabric prepreg and a carbon fiber fabric prepreg are sequentially wound; a heat contraction band is wound; curing is conducted; and demolding is conducted. The composite car energy absorption part has the advantages of being low in weight, high in specific energy absorption value and low in cost.

Description

technical field [0001] The invention relates to an automobile energy absorbing part, in particular to a composite material automobile energy absorbing part and a processing method thereof. Background technique [0002] In today's society, vehicles have entered thousands of households, and a large number of traffic accidents inevitably endanger the safety of drivers and passengers. In order to reduce the personal injury caused by the external impact force when the vehicle is impacted, most automobiles have applied a device between the longitudinal beam and the anti-collision steel beam that can absorb the impact energy from the outside, that is, the energy absorption component. Up to now, the energy absorbing components of major automobile manufacturers are still mainly made of metal, which is widely used in automobiles, but this kind of material mainly absorbs energy through plastic deformation, resulting in poor energy absorption performance. In recent years, the rise of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R19/02B60R19/03B32B9/02B32B5/02B32B9/04B32B5/26B32B17/02B32B17/12B32B7/08B32B33/00B32B37/10B32B37/06B32B37/08
CPCB32B1/08B32B5/02B32B5/26B32B7/08B32B33/00B32B37/06B32B37/08B32B37/10B32B2250/20B32B2262/101B32B2262/106B32B2307/56B32B2597/00B32B2605/08B60R19/02B60R19/03B60R2019/026
Inventor 阳玉球许晶刘光涛滨田泰以王永利谢茜董玉莹董轩
Owner DONGHUA UNIV
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