A 3D printing nozzle path optimization method for fiber-reinforced structures
A 3D printing and path optimization technology, applied in the field of fiber-reinforced structures, can solve the problems such as the difficult realization of nozzle paths in mathematical methods, and achieve the effects of avoiding inefficiency or even failure, achieving stable convergence, and enhancing evolutionary robustness
Active Publication Date: 2022-04-22
SHANDONG UNIV
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Problems solved by technology
Specifically, the fiber angle variables defined by discretization are independent of each other, and adjacent fiber angles may appear in extreme states such as being perpendicular to each other. Based on this, generating continuous and equally spaced nozzle paths is extremely difficult to achieve at the level of mathematical methods
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[0042] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
[0043] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the invention clearly dictates otherwise, the singular is intended to include the plural as well, and it is also to be understood that when the terms "comprising" and / or "including" are used in this specification, Indicate the presence of features, steps, operations, devices, components and / or combinations thereof;
[0044] For the convenience of description, if the words "up", "down", "left" and "right" appear in the prese...
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The invention discloses a 3D printing nozzle path optimization method for fiber-reinforced structures, which solves the problem that the nozzle path continuity and equidistant properties are not considered in the prior art, and has the beneficial effect of ensuring the manufacturability of fiber-reinforced structural parts. The specific scheme is as follows: a 3D printing nozzle path optimization method for fiber-reinforced structures, including defining the fiber angle variable with a level set function, and then constructing the correlation expression between the fiber-reinforced material constitutive model and the fiber angle; based on the fiber-reinforced material constitutive The model and the established objective function and constraint conditions are used to obtain the evolution velocity field of the nozzle path of the level set function; based on the obtained evolution velocity field of the nozzle path of the level set function, the optimal solution of the nozzle path optimization is found; the level set function is updated, The updated level set function is used to judge whether the solution of nozzle path optimization meets the convergence condition, and the optimal solution that meets the convergence condition is converted into a 3D printing device to execute the code.
Description
technical field [0001] The invention relates to the field of fiber reinforced structures, in particular to a 3D printing nozzle path optimization method for fiber reinforced structures. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] In recent years, fiber reinforced composite materials have received extensive attention as an emerging advanced composite material. In particular, fiber composite materials represented by carbon fiber have many characteristics that are significantly superior to other materials, including: high temperature resistance, corrosion resistance, high strength, High modulus, light weight and good adsorption. Therefore, fiber-reinforced composite materials have been widely used in many industrial manufacturing fields such as aerospace, automobiles, and ships. Traditionally, continuous carbon fiber molding manufacturi...
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IPC IPC(8): G06F30/23G06Q10/04G06F111/04G06F113/10
CPCG06F30/23G06Q10/047G06F2113/10G06F2111/04
Inventor 刘继凯黄嘉奇颜静静李磊
Owner SHANDONG UNIV