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Bidirectional evolutionary structure topological optimization based disk type flywheel optimized design method

A topology optimization, two-way progressive technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as shape optimization

Inactive Publication Date: 2012-10-31
HUNAN UNIV
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Problems solved by technology

[0003] For disc-type flywheels made of homogeneous materials, under certain constraints, the most economical and practical flywheel structure cannot be obtained only by shape optimization. For example, the common disc-type and spoke-type flywheels in daily life cannot be obtained through shape optimization.

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  • Bidirectional evolutionary structure topological optimization based disk type flywheel optimized design method
  • Bidirectional evolutionary structure topological optimization based disk type flywheel optimized design method
  • Bidirectional evolutionary structure topological optimization based disk type flywheel optimized design method

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The high-speed rotating disc flywheel mainly bears the centrifugal load. In practical engineering applications, circular holes of the same size are often evenly distributed along the circumference of the flywheel to reduce the mass of the flywheel. The initial structure of the flywheel of the embodiment of the present invention is as follows: figure 2 As shown (taking the 1 / 6 model of the disc flywheel as an example), the inner and outer ends of the disc flywheel (area 1 and area 3) are non-design areas, which is to ensure that the disc flywheel can be assembled with the shaft at the same time With a certain moment of inertia, only the middle area 2 (except the round hole) is a designable area. The material parameters of the disc flywheel are shown in Table 1, and the size parameters are shown in Table 2. When holes are dug ...

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Abstract

The invention discloses a bidirectional evolutionary structure topological optimization based disk type flywheel optimized design method. The disk type flywheel is made of a homogeneous material. The design method comprises the following steps: performing finite element grid division on an initial design domain of the disk type flywheel and giving a target volume, a volume evolution rate and a filtering radius of a structure; performing finite element analysis on the flywheel structure and calculating a stress sensitivity number of each unit; obtaining the sensitivity number of the current iteration and the structure target volume of the next iteration; and deleting and adding units until the target volume and the condition of convergence are satisfied at the same time. Through the bidirectional evolutionary structure topological optimization based disk type flywheel optimized design method, disclosed by the invention, practical flywheel optimized design can be guided rationally, and therefore, mass of the flywheel can be reduced on the basis of a certain intensity.

Description

technical field [0001] The invention relates to the technical field of energy storage structure design in the machinery industry, in particular to a method for topology optimization design of a homogeneous material disc flywheel structure. Background technique [0002] Structural optimization can not only effectively improve existing structures, but also provide important and valuable theoretical guidance for conceptual design beyond the designer's experience. Structural topology optimization takes material distribution as the optimization object, and searches for the best distribution scheme in the design space where materials are uniformly distributed. Topology optimization is an advanced stage of structural optimization problems, and its difficulty is much higher than that of size optimization and shape optimization. However, with the improvement of computer computing power and the development of finite element technology, structural topology optimization technology has n...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 孙光永李光耀闫晓磊毛丽臣徐峰祥
Owner HUNAN UNIV
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