Nonlinear wave propagation due to impulse-like actions in saturated, partially drained soil

由于饱和、部分排水土壤中的脉冲作用而导致的非线性波传播

• 批准号: 313605443
• 负责人: Professor Dr.-Ing. Jürgen Grabe
• 金额: --
• 依托单位: Institut für Geotechnik und Baubetrieb B-5
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/313605443?language=en
• 关键词: Nonlinear; wave; propagation; due; impulse

The objective of the research project is the investigation of wave propagation due to impulse-penetration of saturated soil. Field measurements of dynamic soil densification and detonations in soil are performed. The results of these measurements will be used to validate the numerical simulations. For the numerical simulations two different methods, the FEM and MPM, will be used. The difference between two models for the saturated soil, the u-p- and v-w-formulation, will be investigated. The effect of pore water and the non-linear hypoplastic material model on the wave propagation will be researched. The efficiency of the time consuming simulation will be enhanced by parallelizing the Code and the usage of powerful graphic cards.

研究项目的目的是研究饱和土的脉冲侵彻引起的波浪传播。进行了动态土壤致密化和土壤爆轰的现场测量。这些测量结果将用于验证数值模拟。对于数值模拟，将使用两种不同的方法，FEM和MPM。两种模型之间的差异，饱和土壤，u-p-和v-w公式，将进行研究。研究了孔隙水和非线性欠塑性材料模型对波浪传播的影响。通过并行化代码和使用强大的图形卡，可以提高耗时模拟的效率。

项目成果

Different Formulations and Integration Schemes

不同的配方和整合方案

• DOI: 10.1201/9780429028090-3
• 发表时间: 2019
• 期刊: The Material Point Method for Geotechnical Engineering
• 作者: Chmelnizkij A.;J. Grabe
• 通讯作者: J. Grabe