SGER: A Thermomechanical Framework for the Analysis of Liquefaction

0234009，K.R. Rajagopal，Texas A M University“A Thermomechanical Framework for the Analysis of Soil Liquefaction“这一行动支持了一种新的方法来模拟由于地震激励引起的土壤液化现象。饱和无粘性土壤的液化涉及到土壤行为从固体状到流体状的变化。 新的方法涉及到一个一般的热力学框架，已相当成功地描述非常不同的耗散过程的应用。 这种热力学框架特别适合于描述材料的非弹性响应，并且非常适合于描述从固体状到流体状行为的转变。 它已被用来描述固体到固体和液体到固体的相变，以及塑性和粘弹性。 在将该框架应用于土壤液化时，土壤被模拟为颗粒材料和液体的混合物，能够经历大的可逆和不可逆的变形。在该框架已经发展到描述土壤液化之后，将研究土壤液化的具体初边值问题。

0234009, K.R. Rajagopal, Texas A&M University"A Thermomechanical Framework for the Analysis of Soil Liquefaction "This action supports a new approach to modeling the phenomenon of soil liquefaction due to earthquake excitation.The liquefaction of saturated cohesionless soils involves a change in soil behavior from solid-like to fluid-like. The new approach involves the application of a general thermodynamic framework that has been quite successful in describing very diverse dissipative processes. This thermodynamic framework is particularly suited to describing the inelastic response of materials, and is very appropriate for describing the transition from solid-like to fluid-like behavior. It has been used to describe both solid-to-solid and liquid-to-solid phase transitions, as well as plasticity and viscoelasticity. In applying this framework to soil liquefaction, the soil is modeled as a mixture of a granular material and a liquid, capable of undergoing large reversible and irreversible deformations.After the framework has been developed to describe soil liquefaction, specific initial-boundary value problems of soil liquefaction will be studied.