Topology Optimization Method Based on Growing Evolutionary Structure
A topology optimization, material structure technology, applied in design optimization/simulation, instrumentation, calculation, etc., can solve different problems
Inactive Publication Date: 2019-09-27
HEBEI UNIV OF TECH
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Problems solved by technology
[0004] The excellent performance of biological structures lies in their ability to meet the different tensile and compressive properties of structures. However, the mathematical mechanism behind their excellent mechanical structures has always been the focus of researchers. In recent years, with the realization of large-scale numerical calculations by computers, the Its research has become a challenging research topic in the field of structural optimization
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specific Embodiment approach
[0032] (1) The structural geometric parameters and boundary condition parameters are initialized, and the design domain Ω is given;
[0033] (2) Apply the finite element method to solve the structural balance equation, and obtain the displacement field vector u and the conjugate displacement field ω under a given load condition;
[0034] (3) According to the relationship between the particles of the gelled granular material,
[0035]
[0036] Calculate the elastic tensor of the material at each element
[0037] (4) Calculate the objective function and constraint function relative to the sensitivity;
[0038] (5) According to the sensitivity value of each unit, delete or add unit materials according to a certain ratio;
[0039] (6) Judging the convergence, check whether the iteration end condition is satisfied, if so, obtain the convergent solution, and exit the calculation, otherwise repeat steps (2) to (6) until the convergent solution is obtained.
[0040] Such as ca...
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The invention discloses a growth evolutionary structure based topology optimization method, which is characterized in that a mathematical model of cementitious granular material structured topology optimization is established based on the method, that an evolutionary numerical topology optimization algorithm is given and that programming is achieved. The topology optimization method proposed in the invention is convergent and efficient, and can optimize the design and application of tension and compression asymmetry in material and structure. The mathematical model can be applied to biological structure design; this method can simulate the characteristics of biological materials, complemented by topology optimization; beyond that, the mathematical model can be used for biological structure engineering and, at the same time, is suitable for topology optimization of plastic design and the optimization of structural dynamic characteristic values.
Description
technical field [0001] The invention relates to the technical field of topology optimization, in particular to a topology optimization method based on growth evolutionary structure. Background technique [0002] With the development of computer science and technology, people's requirements for structural design are getting higher and higher, and the traditional structural design methods are far from meeting the requirements of structural performance. Therefore, people's good wishes to obtain optimized structural design schemes, combined with modern scientific and technological means, promoted the birth of modern structural optimization design theory. According to the concept of bionics, structural engineers benefit a lot when designing certain structural features such as shape and size, but there is no theoretical support. [0003] The CAE system based on finite element calculation is used by many companies for new product development to shorten the cycle of new product dev...
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IPC IPC(8): G06F17/50
CPCG06F30/23G06F30/367
Inventor 贾海朋门群英江春冬刘聪毅
Owner HEBEI UNIV OF TECH