Establishment and development of constitutive models for particle dispersesd type intelligent composite material

颗粒分散型智能复合材料本构模型的建立与发展

• 批准号: 11650093
• 负责人: NAKAGAKI Michihiko
• 金额: $ 2.24万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650093/
• 关键词: intelligent material; particle dispersed composite; fiber reinforced composite; constititive model; self-consistent mdthod; Localized rigidity; equivalent inclusion method; meso-mechanics analysis

The objectives of this research is to develop and establish a rigorous material constitutive model that accurately predicts the macro-behavior of an intelligent composite material. The intelligent material has a number of micro-actuators that are dispersed or regularly arrayed in the medium of the matrix m material. By properly arranging the micro-actuators in distribution, direction, and/or volume fraction, a precise and designated function can be performed. In the present development a phase transforming alloy is considered for taking the role of the actuator so that the intelligent material may have a high degree of mechanical function. For this end, the only amenable model is selected from our previous developments, that is a self-consistent type constitutive model, SCC-LRM. The model describes with a good accuracy the macroscopic behavior of the composite that contains particle inclusions of various types of grains.In the present model, piezo elastic materials or phase transformat … More ion materials are considered to take the role of the micro-actuator. Although the degree of freedom of deformation behavior is low when those materials were used as monolith material, it is possible to give a high performance that the degree of freedom is high by choosing some microscopic particle shape such as fiber. However, the behavior of the macro-material of such intelligence material is very complicated and is not established yet For a practical use of the intelligent material, a link between the meso-material design and the macro-function is essential. In this study, the objective is set to establish a constitutive law for such intelligence m material. For the objective of this research, the self-consistent type SCC-LRM model, which has been developed by our group, was used. Especially in which, two effects, namely the meso-inhombgeneity and non linearity caused by interference between adjacent particles, are accounted for. It can be said that the emergence of the SCC-LRM model has an important meaning, since the conventional mean field theory has been used in the wide area of composite material technology. In the meantime, authors developed Localized Rigidity Model (LRM) in which stress and strain were distributed in the phase. And it was verified with the result of analysis that the accuracy is very high in the whole range of volume fraction. Thus, it is advocated that the development of a constitutive law with the meaningful performance in this study is impossible without the employment of the LRM which considered the distribution of stress and strain for the nonlinearproblem of composite material. Less

本研究的目标是开发和建立严格的材料本构模型，以准确预测智能复合材料的宏观行为。智能材料具有多个分散或规则排列在基体m材料介质中的微执行器。通过适当地布置微致动器的分布、方向和/或体积分数，可以执行精确且指定的功能。在目前的开发中，考虑使用相变合金来充当执行器的角色，使得智能材料可以具有高度的机械功能。为此，从我们之前的发展中选择了唯一合适的模型，即自洽型本构模型，SCC-LRM。该模型非常准确地描述了含有各种类型晶粒的颗粒夹杂物的复合材料的宏观行为。在本模型中，压电弹性材料或相变离子材料被认为扮演了微致动器的角色。虽然当这些材料用作整体材料时变形行为的自由度较低，但通过选择一些微观颗粒形状（例如纤维），可以提供自由度较高的高性能。然而，这种智能材料的宏观材料的行为非常复杂，尚未建立。对于智能材料的实际应用，细观材料设计和宏观功能之间的联系至关重要。在这项研究中，目标是建立这种智力与物质的构成法则。为了实现本研究的目的，使用了我们小组开发的自洽型SCC-LRM模型。特别是其中，考虑了两种效应，即由相邻粒子之间的干扰引起的细观不均匀性和非线性。可以说，SCC-LRM模型的出现具有重要的意义，因为传统的平均场理论已经广泛应用于复合材料技术领域。同时，作者开发了局部刚度模型（LRM），其中应力和应变分布在相中。分析结果验证了在整个体积分数范围内精度很高。因此，有人认为，如果不采用考虑复合材料非线性问题应力和应变分布的LRM，就不可能在本研究中发展出具有有意义性能的本构定律。较少的

项目成果

呉 亜東, 中垣 通彦, 常 華建: "マイクロ繊維分散複合材料の局所塑性損傷における評価"日本機会学会2000年度年次大会講演論文集. 577-578 (2000)

吴亚通，中垣道彦，常华建：“微纤维分散复合材料局部塑性损伤的评价”日本机械工程学会2000年年会论文集577-578（2000）。

小金丸 正明, 中垣 通彦, 呉 亜東: "塑性基粒子分散複合材料実験によるLRM構成則の検証"日本機会学会2000年度年次大会講演論文集. 181-182 (2000)

Masaaki Koganemaru、Michihiko Nakagaki、Ato Kure：“通过塑料基体颗粒分散复合材料实验验证LRM本构定律”日本机械工程师学会2000年年会记录181-182（2000）。

諸石昭利, 中垣通彦, 呉亜東: "メゾ粒子の応力干渉によるマイクロ損傷と相変態の干渉効果"日本機械学会第13回計算力学講演会論文集. 771-772 (2000)

Akitoshi Moroishi、Michihiko Nakagaki、Yadong Kure：“由于介观粒子的应力干扰而导致的微损伤和相变的干扰效应”日本机械工程学会第13届计算力学会议论文集771-772（2000）。

Michihiko Nakagaki,Yadong Wu: "Study of Interaction on Meso-Local Damage Phenomena Modeled in SCC-LRM Constitutive Law"Proceeding of European Congress on Computational Methods in Applied Sciences and Engineering. 8 (2000)

中垣道彦、吴亚东：“SCC-LRM本构法中细观局部损伤现象相互作用的研究”欧洲应用科学与工程计算方法大会论文集。

Yadong WU,Michihiko NAKAGAKI: "Constitutive Model for Fiber Dispersed Composites taking account of Meso-local Inhomogeneity and Anisotropy due to Inclusions Disposition"Proceeding of International Conference on Computationla Engineering & Sciences. 1122-1

吴亚东、中垣道彦：“考虑因夹杂物分布引起的细观局部不均匀性和各向异性的纤维分散复合材料的本构模型”国际计算工程会议论文集