Contact models and -discretizations for dry and saturated soils within dynamical applications

动态应用中干燥和饱和土壤的接触模型和离散化

• 批准号: 117495943
• 负责人: Professor Dr.-Ing. Peter Wriggers
• 金额: --
• 依托单位: Institut für Kontinuumsmechanik (IKM)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/117495943?language=en
• 关键词: Contact; models; discretizations; dry; saturated

Geotechnical construction processes and their influence on the surrounding area need a modelling procedure where the contact between soil and structure has to be treated as a unilateral contact prob-lem. Within solid mechanical applications there exist a lot of methods to formulate and discretize contact problems. For geotechnical applications a lot of new phenomena have to be solved. The correct friction behaviour, the interaction with the complex material models of the soil and the formulation of the coupled fluid solid interaction of saturated soils are still challenging issues. Although new theoretical formulations and complex discretization techniques were developed improvements are still required. Especially for dynamical contact applications and for the solutions of pile installation into (partly) saturated soils new formulations including liquefaction effects have to be developed.

岩土工程施工过程及其对周围区域的影响需要一个建模程序，其中土壤和结构之间的接触必须被视为单边接触问题。在固体机械应用中，存在许多方法来制定和离散化接触问题。对于岩土工程应用来说，必须解决许多新现象。正确的摩擦行为、与土壤复杂材料模型的相互作用以及饱和土壤耦合流固相互作用的公式仍然是具有挑战性的问题。尽管开发了新的理论公式和复杂的离散化技术，但仍然需要改进。特别是对于动态接触应用以及将桩安装到（部分）饱和土壤中的解决方案，必须开发包括液化效应在内的新配方。