ABSTRACT
This chapter discusses the modelling approach of deformation during drying phenomena. The mechanisms of deformation in porous materials throughout drying are very complicated because of the structural complexity. In general, void development because of the water migration and structural mobility is a more prominent phenomenon that causes the deformation. The chapter lays out the physical mechanisms of the deformation. Various concepts such as water-holding capacity, water distribution, glass transition temperature, the phase change of liquid water, and internal moisture transport mechanisms need to be taken into consideration to explain deformation clearly for a particular material in a selected drying condition. The chapter discusses the current challenges which are encountered during developing deformation models. Empirical models can be developed with ease and offer high accuracy in prediction. However, empirical models are not highly recommended for diverse materials and drying conditions due to their lack of physical insight.
