Dave Kellermann

Computational Mechanics Researcher
in Continuous Fibre Reinforced Composites (CFRPs)
see: Composite Modelling

The research is linked with the Cooperative Centre for Advanced Composite Structures (CRC-ACS) in the development of improved Finite Element Analyses (FEA) of composite forming processes. This has driven investigative work into a number of fundamental theoretical areas involving development of continuum mechanics and the finite element method.

Most notably therein, the theory of Strongly Orthotropic Continuum Mechanics:

Green Strain Tensor (Cauchy's infinitessimal strain tensor):

$\varepsilon_{ij} = {1 \over 2} \left ({\part u_i \over \part x_j} + {\part u_j \over \part x_i}\right )$

The Orthotropic Tensor (Kellermann-Furukawa):

$\varepsilon_{ij} = \left({\part u_i \over \part x_j} + {\part u_j \over \part x_i}\right) \left[{sin}^{2}\theta_{ij}{E_{ij} \over E_{ij}\,+\;E_{ji}}+{cos}^{2}\theta_{ij}{E_{ji} \over E_{ji}+E_{ij}}\right]+\left({\part u_i \over \part x_i} - {\part u_j \over \part x_j}\right)sin2\theta_{ij}{E_{ij}-E_{ji} \over 2\left(E_{ij}+E_{ji}\right)}$

where, in the subset case of isotropy, the tensor reduces to that of Cauchy as a result of balanced orthogonal properties.

Research interests:

Strongly orthotropic continuum mechanics and nonlinear Eulcidean shell elements
Sub-laminar decomposition for finite element modelling of CFRPs
High displacement, persistently orthotropic FEA using various methods (invariant and rigid body pivoting)
Rheological characterisation of thermoset pre-impregnated CFRPs for laminate forming
Polymeric damage models for forming of pre-preg composites
Experimental-numerical approaches for parameter identification of thermoset CFRP forming models

Email:
Phone: (02) 9385 6253
Mobile: 0416 343534
Office: Room M5, The Willis Annexe
Laboratory: L205, The Willis Annexe