Rule-based body structure evolution design method
A technology of structural evolution and design method, applied in design optimization/simulation, calculation, image data processing, etc., can solve the problem of no autonomous adjustment mechanism, the system cannot respond to complex environmental changes autonomously, and cannot respond to the battlefield environment in real time.
Active Publication Date: 2017-02-15
SHANGHAI UNIV
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Problems solved by technology
The agent-based dynamic evolution system and method (CN103309658A) proposed by Xidian University is used in systems where user needs and environments are constantly changing. It is a method to meet the needs of users to develop dynamic integrated evolution systems, but the system cannot be autonomous Respond to, for example, unscheduled environments and complex environmental changes without an autonomous adjustment mechanism
A multi-agent-based distributed deduction simulation system and method (CN101908085A) proposed by Beihang University can realize independent perception of battlefield environment status, independent decision-making and behavior output. It is a combat simulation system with expandable characteristics and versatility. However, this system cannot deal with complex battlefield environments in real time
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[0057] Preferred implementation example of the present invention, in conjunction with accompanying drawing, describe in detail as follows:
[0058] see figure 1 , a rule-based evolutionary design method of volume structure, the operation steps are as follows:
[0059] 1) Voxelization: use the octree method to voxelize the input grid model, and unify the design and evaluation into one computational domain;
[0060] 2) Initialization: build a multi-agent system and define the external environment;
[0061] 3) Evolution of defeasible rules: Agent perceives its own environment information and its own attributes to judge, and performs model evolution based on defeasible rules;
[0062] 4) Finite element analysis: Evaluate and test the generated model through finite element analysis, and feed back the stress value of the voxel to the evolution process of the structure in real time, and perceive it by the agent;
[0063] 5) Surface reconstruction: surface reconstruction of lightwe...
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The present invention relates to a rule-based body structure evolution design method. The method includes the following steps that: discretization processing is performed on an inputted surface model, the voxelization of the model is realized, and design and evaluation are unified into a computing domain; a multi-agent system is constructed to define external environments; agents sense the information of environments where the agents are located and the attributes of the agents so as to carry out judgment, and model evolution is carried out based on a defeasible rule; the analysis result of FEA is fed back to an evolution process in real time, and the agents sense the analysis result and change their behavior attributes, and the internal structure of a lightweight model is changed; surface reconstruction is performed on the generated lightweight model; and relevant parameter verification is performed on the generated lightweight model. As indicated by experiments, the method is very suitable for the construction of 3D printed lightweight models.
Description
technical field [0001] The invention relates to a rule-based volume structure evolution design method. Background technique [0002] The development of 3D printing technology provides an efficient method for manufacturing models of complex structures. The generation method of lightweight structures has also become a research hotspot for many scholars. However, there are still many difficulties in the design of complex lightweight structures. Some commercial 3D design Software and other 3D printing-oriented systems support complex internal structure functions such as shelling and support design of the model. However, there is a lack of effective analytical testing and structural performance evaluation tools, and it is impossible to accurately calculate the appropriate material removal rate and the shape, quantity and position of the generated support under the premise of ensuring the mechanical properties of the structure. Most methods and systems need to rely on third-party...
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Login to View More IPC IPC(8): G06T17/00G06T17/20G06F17/50
CPCG06F30/23G06T17/005G06T17/20
Inventor 李婉婉沈隽晟姚远
Owner SHANGHAI UNIV