Fiber path and geometrical shape integrated design method of composite material special-shaped shell
A technology of geometric shapes and composite materials, applied in geometric CAD, design optimization/simulation, CAD numerical modeling, etc., can solve the problems of low design efficiency and low bearing performance of composite special-shaped shells, so as to improve efficiency and bearing performance. , the effect of reducing the development cycle
Active Publication Date: 2020-04-17
DALIAN UNIV OF TECH
View PDF3 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The present invention mainly solves the problems of low load-bearing performance and low design efficiency of composite special-shaped shells in the existing technology, and proposes an integrated design method of fiber path and geometric shape of composite special-shaped shells, which achieves high efficiency and greatly improves The purpose of the load-bearing performance of the structure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0049] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. It should also be noted that, for the convenience of description, only relevant parts of the present invention are shown in the drawings but not all content.
[0050] figure 1 It is a flow chart for realizing the integrated design method of fiber path and geometric shape of the special-shaped composite shell structure provided by the embodiment of the present invention. The integrated design method of the fiber path and geometric shape of the special-shaped composite shell structure provided by the embodiment of the present invention includes: ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a fiber path and geometrical shape integrated design method of a composite material special-shaped shell, and belongs to the field of structural design of composite material special-shaped shells. Along with the harsh requirements for light weight, aerodynamic force and the like of aerospace vehicles in the future, the structure is widely concerned due to high specific stiffness, high strength and extremely high design flexibility, and particularly, the geometrical shape and fiber laying of the structure both have great design space. The invention provides an efficientintegrated optimization method for a geometrical shape and a fiber path. The geometric shape of the structure and the fiber path are alternately optimized by adopting a gradient optimization algorithmand a heuristic optimization algorithm respectively, the overall geometrical shape and the local geometrical shape are coupled and optimized to finally obtain an optimal structure meeting the processing and manufacturing constraints and the volume constraints of a curve fiber path and a shell surface. According to the method, the bearing capacity of the structure can be remarkably and efficientlyimproved under the condition that the weight of the structure is kept unchanged, and the research and development efficiency of products is greatly improved.
Description
technical field [0001] The invention relates to the field of bearing capacity design of special-shaped shells made of aerospace composite materials, in particular to an integrated design method for fiber paths and geometric shapes of special-shaped shells made of composite materials. Background technique [0002] In order to save manufacturing costs and improve the overall performance of aircraft, aerospace structures have increasingly stringent weight requirements. Composite materials are widely used in aerospace load-bearing structures because of their high specific stiffness and specific strength. In order to meet the requirements of instrument assembly, aerodynamics and lightweight design, complex special-shaped shell structures have been widely used in the modern aircraft industry, such as aircraft fuel tanks, missile bodies and launch vehicle tails, etc. In order to ensure that the structure's load-carrying capacity is greatly improved under the condition that the str...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/23G06F111/10
CPCY02T50/40
Inventor 郝鹏刘轩秀王禹石云峰王博黄蔚
Owner DALIAN UNIV OF TECH