Moisture-dependent thermo-mechanical constitutive modeling of wood
Moisture-dependent thermo-mechanical constitutive modeling of wood
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DOI：
10.1108/ec-09-2017-0368
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发表时间：
2018-11
影响因子：
1.6
通讯作者：
R. Fleischhauer;J. Hartig;P. Haller;M. Kaliske
中科院分区：
文献类型：
--
作者：
R. Fleischhauer;J. Hartig;P. Haller;M. Kaliske
目的对木材的致密化和成型过程进行数值研究.提供一个一致的多物理有限元方法框架的理论和数值方法是本研究的进一步目标。Design/methodology/approachconstitutional唯象描述木材的热机械和水分依赖的材料特性。特别关注的是一个一致的湿热力学建模在有限的变形捕捉木材的现实材料的行为，特别是当它受到致密化和成型processs.FindingsRealistic不同的湿热力学过程的理论配方提供。一个成功的数值模拟证明山毛榉木材的实验findings.Originality/valueThe本构关系和数值研究结果是新的，因为它们管理一个多物理大变形框架，并适用于先进的技术致密化和成型的木材。
PurposeThe purpose of this study is the numerical investigation of densification and molding processes of wood. Providing theoretical and numerical approaches with respect to a consistent multi-physical finite element method framework are further goals of this research.Design/methodology/approachConstitutive phenomenological descriptions of the thermo-mechanical and moisture-dependent material characteristics of wood are introduced. Special focus is given to a consistent hygro-thermo-mechanical modeling at finite deformations to capture the realistic material behavior of wood, especially when it is subjected to densification and molding processes.FindingsRealistic theoretical formulations of different hygro-thermo-mechanical processes are provided. A successful numerical modeling is demonstrated for beech wood by validation at experimental findings.Originality/valueThe constitutive laws and numerical findings are new, as they govern a multi-physical large deformation framework and are applied to the advanced technology of densification and molding of wood.