Hygro- and Thermo-Mechanical Modeling of Wood at Large Deformations: Application to Densification and Forming of Wooden Structures
Hygro- and Thermo-Mechanical Modeling of Wood at Large Deformations: Application to Densification and Forming of Wooden Structures
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DOI：
10.1007/978-3-319-70563-7_4
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
R. Fleischhauer;M. Kaliske
中科院分区：
文献类型：
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作者：
R. Fleischhauer;M. Kaliske
手头的贡献提供了一个基础，特别是在大变形的湿和热机械过程建模。因此，木材的湿和热力学的基本原理被引入考虑水分，温度和位移依赖的过程。水分对木材密度的影响被考虑在内，以及温度和水分的相互作用的表征。有限元公式推导，S连同本构关系，作为数值解的基础。一个验证以及验证的具体配方为不同的木材品种的湿热力学行为。最后，所提出的有限元描述的适用性证明在木材的致密化和成型过程。
The contribution at hand provides a basis for modeling hygro- and thermo-mechanical processes, especially at large deformations. Therefore, hygro- and thermo-mechanical fundamentals of wood are introduced under consideration of moisture, temperature and displacement dependent processes. The influence of moisture on the density of wood is taken into account as well as a characterization of the interaction of temperature and moisture. Finite element formulations are derived,s together with constitutive laws, as a basis for the numerical solutions. A verification as well as a validation of the specific formulations for the hygro- and thermo-mechanical behavior of different wood species is presented. Finally, the applicability of the proposed finite element descriptions is demonstrated at the densification and forming process of wood.