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利用结构基因法研究非线性周期性板结构的等效力学性能
Study on the Equivalent Properties of Nonlinear Periodic Heterogeneous Composite Plates Using the Structural Genome Approach
投稿时间:2020-07-29  修订日期:2020-09-30
DOI:
中文关键词:  周期性复合材料板  等效力学性能  结构基因
英文关键词:Periodic Composite Plate  Equivalent Mechanical Properties  Structural Genome
基金项目:国家自然科学基金
作者单位E-mail
贾贻然 西安交通大学, 航天航空学院机械结构强度与振动国家重点实验室国际应用力学中心 zishunliu@mail.xjtu.edu.cn 
韩灵芝 西安交通大学, 航天航空学院机械结构强度与振动国家重点实验室国际应用力学中心  
雷金成 西安交通大学, 航天航空学院机械结构强度与振动国家重点实验室国际应用力学中心  
刘子顺 西安交通大学, 航天航空学院机械结构强度与振动国家重点实验室国际应用力学中心 zishunliu@mail.xjtu.edu.cn 
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中文摘要:
      非线性周期性板结构是一类在智能复合材料领域具有巨大的应用潜力的结构,因其构成材料的非线性特性,以及结构中经常包含增强纤维、肋板、空洞等复杂微结构导致的材料几何非线性,利用常规的有限元方法进行建模和分析较为困难。本研究提出了一种结构基因法,通过提取非线性周期性板结构的最小模型单元作为其结构基因,将异质周期性板结构等效为均质板结构,便捷地求解了非线性周期性板结构的微观力学性能和整体等效力学性能。算例表明,结构基因方法可用来分析复杂非线性复合材料结构问题,计算结果精度足够。为复合材料微观力学研究提供了有价值的参考。
英文摘要:
      Nonlinear periodic plate structure is a promising structure in intelligent composite materials. These structures often include complex microstructures such as ribs, holes and reinforcing fibers. Due to the existence of these complex structures, it is difficult to model and analyze this type of structures directly. In order to solve the problems, these structures are usually modeled as the equivalent macroscopic homogeneous plates. Thus the key problem is to obtain the equivalent mechanical properties of the macro model. In this study, we proposed a structural genome approach for obtaining the equivalent mechanical properties of nonlinear periodic homogeneous plate structures. We regarded the smallest structure building block of the nonlinear periodic plate structure as its structural genome. The equivalent mechanical properties can be calculated through the structural genome. This work provide a convenient approach to analyze micromechanical and overall equivalent mechanical properties of nonlinear periodic plate structure, and the results agree very well with the analysis of original nonlinear periodic plate structure. Structural genome method can provide a valuable reference for the micro-mechanical research of composite materials.
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