CORRELATION ANLYSIS OF RANDOMNESS, DEFORMATION AND DAMAGE BY WAY OF MICROSCOPIC INHOMOGENEITY FORCES IN POLYCRYSTALLINE AGGREGATE MODEL

多晶骨料模型中微观不均匀力的随机性、变形和损伤的相关性分析

• 批准号: 22560080
• 负责人: IMATANI Shoji
• 金额: $ 2.5万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560080/
• 关键词: 連続体力学; 有限要素法; 多結晶金属材料; 界面; 不均質力; 損傷; 多結晶材料; 形態力学; 弾塑性力学; 機械材料・材料力学; 金属材料; 多結晶体; 表面粗面化; 界面剥離; エシェルビー応力

Based on the configurational mechanics concept, microscopic inhomogeneity is discussed on polycrystalline material models. A numerical algorithm for evaluating the inhomogeneity force, which is none other than a generalization of the energy release rate in fracture mechanics, is constructed and applied to the interfacial problems in polycrystalline aggregates. The simulation suggests that the inhomogeneity force per unit area, which results from the loading condition and crystal morphology as well, is independent on the path of area integration so far as the path does not involve any singularity portion.

基于构型力学概念，讨论了多晶材料模型的微观不均匀性。构建了一种评估不均匀力的数值算法，该算法是断裂力学中能量释放率的推广，并将其应用于多晶骨料的界面问题。模拟表明，由加载条件和晶体形态引起的每单位面积的不均匀力与面积积分的路径无关，只要该路径不涉及任何奇点部分。

项目成果

Numerical Evaluation of Inhomogeneity Forces in a Coating Layer Due to Thermal Loading

热载荷引起的涂层不均匀力的数值评估

• DOI: 10.3184/096034012x13486528828884
• 发表时间: 2012
• 期刊: Materials at High Temperatures
• 影响因子: 1.3
• 作者: 神田純一，諸岡 聡;梅澤 修;Shoji Imatani and Ek-u Thammakornbunjut
• 通讯作者: Shoji Imatani and Ek-u Thammakornbunjut

Thermomechanical Response and Onset of Instability of Thin Film Layer Due to Thermal Loading

热机械响应和热载荷引起的薄膜层不稳定的发生

• 发表时间: 2010
• 作者: k-u Thammakornbunjut;Shoji Imatan;Shoji Imatani and Ek-u Thammakornbunjut
• 通讯作者: Shoji Imatani and Ek-u Thammakornbunjut

Possible debonding mode of coated film under thermal loading

热载荷下涂膜可能的脱粘模式

• DOI: 10.1016/j.ijengsci.2011.04.004
• 发表时间: 2011
• 期刊: International Journal of Engineering Science
• 影响因子: 6.6
• 作者: 神田純一，諸岡 聡;梅澤 修;Shoji Imatani and Ek-u Thammakornbunjut;Shoji Imatani;Shoji Imatani and Ek-u Thammakornbunjut
• 通讯作者: Shoji Imatani and Ek-u Thammakornbunjut

Numerical Evaluation of Compressible Plasticity Behaviour of Metal Foams

泡沫金属压缩塑性行为的数值评价

• 发表时间: 2012
• 期刊: Technische Mechanik
• 作者: 神田純一，諸岡 聡;梅澤 修;Shoji Imatani and Ek-u Thammakornbunjut;Shoji Imatani
• 通讯作者: Shoji Imatani

Morphology Effects on Plasticity Behavior of Cellular Materials

形态对多孔材料塑性行为的影响

• 发表时间: 2012
• 作者: 神田純一，諸岡 聡;梅澤 修;Shoji Imatani and Ek-u Thammakornbunjut;Shoji Imatani;Shoji Imatani and Ek-u Thammakornbunjut;Shoji Imatani
• 通讯作者: Shoji Imatani