Home > Events > Plant Sciences Program seminar - Prof. Joseph Turner
Events

Plant Sciences Program seminar - Prof. Joseph Turner

1/23/2018 2:00 PM - 1/23/2018 3:00 PM
​​Abstract:
Plant cell walls are complex, fiber-reinforced biocomposites that change during the growth process. One very importance aspect for growth is the time-dependent (viscoelastic) nature of the cell wall that allows the wall to relax and expand. In this presentation, the role of viscoelasticity and its impact on measurement interpretation and modeling are discussed. In particular, the computational modeling of cell wall behavior must include an appropriate time-dependent component in order for force-displacement responses to have physical relevance. In addition, model inputs are often derived from scanning probe microscope experiments (e.g., nanoindenter, atomic force microscope) that are now being applied to plants. However, data analysis is often made under the assumption of a quasi-static material response for which the loading rate is presumed unimportant. Here, the impact of such assumptions is discussed and quantified using several examples. Prospects for modeling of plant cell clusters will also be examined.