Structure design method of carbon fiber composite engine hood

A technology for hoods and composite materials, applied to combustion engines, internal combustion piston engines, superstructures, etc., can solve problems that are not enough to support the rapid development of carbon fiber composite materials

Inactive Publication Date: 2017-10-20
天津金力研汽车工程技术有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

my country's carbon fiber composite materials have not formed a complete and high-level system from basic research to technology and equipment, which is not enough to support the rapid development of carbon fiber composite materials in the automotive industry

Method used

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with specific examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] It should be noted that the "connection" mentioned in this application and the words used to express "connection", such as "connected", "connected", etc., can refer to the direct connection between a certain component and another component, It can also mean that a certain component is connected to another component through other components.

[0022] The invention provides a structural design method of a carbon fiber composite engine cover,

[0023] The parameters of the ply angle, ply thickness and core material thickness of the carbon fiber composite single-layer ply are selected as the design variables in the structure optimization, and the mathematical model of the size optimization of the composite engine...

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Abstract

The invention discloses a structure design method of a carbon fiber composite engine hood. The method comprises the steps of establishing a mathematical model for size optimization of the composite engine hood by taking parameters such as the ply angle, the ply thickness and the thickness of a core material of a carbon fiber composite one-layer ply as the design variables during structure optimization and conducting the calculations: (1) the design target: the objective function for the size optimization design of the composite engine hood is to make the engine hood to be minimum in weight; (2) design variables; (3) design constraints; (4) calculation conditions; and (5) optimizing the analysis result. When compared with that before optimization, the composite engine hood after optimization has a weight decrease of about 16%, and is basically unchanged in various performance parameters, wherein the first-order frequency is increased, the maximum displacements under static conditions are increased, the stiffness is decreased, but all the changes are within the allowable ranges.

Description

technical field [0001] The invention relates to the technical field of lightweight design of a vehicle body, in particular to a structural design method of a carbon fiber composite engine cover. Background technique [0002] In recent years, environmental problems have become increasingly serious. Climate warming, energy shortages, and garbage disasters have brought the earth into a sub-health era. In order to manage a sub-healthy earth, we need to build a sustainable energy application system to do a good job in energy saving, emission reduction and environmental protection. [0003] After more than 50 years of continuous research and development, new materials, new processes, and new technologies of composite materials are constantly emerging, and more and more composite materials are widely used in automobile manufacturing. Among them, carbon fiber composite materials have been widely used in automobiles because of their excellent properties such as high strength and lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/10B62D29/04
CPCB62D25/10B62D29/043Y02T10/40
Inventor 梁春永葛广跃李乐乐李海鹏
Owner 天津金力研汽车工程技术有限公司
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