Title :
Towards Modeling and Analyzing Stem Lodging for Two Contrasting Rice Cultivars
Author :
Jin, Xiuhong ; Fourcaud, Thierry ; Li, BaoGuo ; Guo, Yan
Author_Institution :
Key Lab. of Plant-soil Interactions of MOE, China Agric. Univ., Beijing, China
Abstract :
Mechanical properties of two contrasting rice cultivars, P64S/E32 and SY63, were measured using 3-point bending tests performed on segments taken at the base and top of plant stems. The parameters of an elastic-plastic material constitutive law were fitted using a finite beam element model reproducing the 3-point bending tests. Both measured data and constitutive laws were compared between cultivars. The finite element model was used to perform numerical analyses of 3D virtual rice lodging. The results showed that there is a significant difference between the material properties of the two rice cultivars, P64S/E32 being more resistant than SY63 due to both material and structural characteristics.
Keywords :
agricultural engineering; agriculture; bending; crops; elastoplasticity; finite element analysis; P64S/E32 rice cultivar; SY63 rice cultivar; bending tests; elastoplastic material constitutive law; finite beam element model; plant stems; rice stem lodging; Biomass; Crops; Educational institutions; Electrical resistance measurement; Finite element methods; Immune system; Material properties; Plants (biology); Production; Testing; beam theory; biomechanics; constitutive law; finite element method; virtual plants; wind loading; windfirmness;
Conference_Titel :
Plant Growth Modeling, Simulation, Visualization and Applications (PMA), 2009 Third International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-7695-3988-1
Electronic_ISBN :
978-1-4244-6330-5
DOI :
10.1109/PMA.2009.16
