I am a research associate in nonlinear structures at the University of Bristol and specialise in the lightweight design of aerospace components. This means I try to make wings, fuselages, rocket shells, etc. as light as possible without them breaking, snapping, crushing … basically failing in service before they are meant to.
Because designing lightweight structures typically entails optimises one aspect of the structure which is the dominant design driver. However, optimising the performance can make the structure very fragile to collapse once it does eventually break. The sudden and often drastic deformations that are involved in these collapse events can only be modelled accurately on a computer when nonlinearities are accounted for. On the other hand, sometimes we want structures to reliably snap into other shapes if this optimises the performance under changing loading conditions. This is known as shape morphing and is generally how nature goes about solving the problem of optimising for different environments.
You can find my contact details and a list of select publications below. To get in touch, please leave a comment and I will get in touch ASAP.
Rainer Groh, PhD MEng
Postdoctoral Research Associate in Nonlinear Structures
Advanced Composites Centre for Innovation and Science (ACCIS)
Department of Aerospace Engineering, University of Bristol
Queen’s Building, University Walk, Bristol, BS8 1TR
RMJ Groh (2015). Non-classical effects in straight-fibre and tow-steered composite beams and plates. University of Bristol. Bristol, UK.
A Madeo, RMJ Groh, G Zucco, PM Weaver, G Zagari, R Zinno (2017). Post-buckling analysis of variable-angle tow composite plates using Koiter’s approach and the finite element method. Thin-Walled Structures, 110, (pp. 1-13). DOI: 10.1016/j.tws.2016.10.012.
RMJ Groh, PM Weaver (2016). Deleterious localized stress fields: the effects of boundaries and stiffness tailoring in anisotropic laminated plates. Proceedings of the Royal Society A, 472 20160391. DOI: 10.1098/rspa.2016.0391.
C Thurnherr, RMJ Groh, P Ermanni, PM Weaver (2016). Higher-order beam model for stress predictions in curved beams made from anisotropic materials. International Journal of Solids and Structures, 97–98, (pp. 16–28). DOI: 10.1016/j.ijsolstr.2016.08.004.
G Zucco, RMJ Groh, A Madeo, PM Weaver (2016). Mixed shell element for static and buckling analysis of variable angle tow composite plates. Composite Structures, 152, (pp. 324–338). DOI: 10.1016/j.compstruct.2016.05.030.
RMJ Groh, PM Weaver (2016). A computationally efficient 2D model for inherently equilibrated 3D stress predictions in heterogeneous laminated plates. Part II: Model validation. Composite Structures, 156, (pp. 186-217). DOI: 10.1016/j.compstruct.2015.11.077.
RMJ Groh, PM Weaver (2016). A computationally efficient 2D model for inherently equilibrated 3D stress predictions in heterogeneous laminated plates. Part I: Model formulation. Composite Structures, 156, (pp. 171-185). DOI: 10.1016/j.compstruct.2015.11.078.
RMJ Groh, PM Weaver, A Tessler (2015). Application of the Refined Zigzag Theory to the modeling of delaminations in laminated composites. NASA/TM-2015-218808.
RMJ Groh, PM Weaver (2015). On displacement-based and mixed-variational equivalent single layer theories for modelling highly heterogeneous laminated beams. International Journal of Solids and Structures, 59, (pp. 147–170). DOI: 10.1016/j.ijsolstr.2015.01.020.
RMJ Groh, PM Weaver (2015). Static inconsistencies in certain axiomatic higher-order shear deformation theories for beams, plates and shells. Composite Structures, 120, (pp. 231–245). DOI: 10.1016/j.compstruct.2014.10.006.
RMJ Groh, PM Weaver (2014). Buckling analysis of variable angle tow, variable thickness panels with transverse shear effects. Composite Structures, 107, (pp. 482–493). DOI: 10.1016/j.compstruct.2013.08.025.
RMJ Groh, PM Weaver, S White, G Raju, Z Wu. (2013). A 2D equivalent single-layer formulation for the effect of transverse shear on laminated plates with curvilinear fibres. Composite Structures, 100, (pp. 464–478). DOI: 10.1016/j.compstruct.2013.01.014.
RMJ Groh, PM Weaver (2015). Full-field stress tailoring of composite laminates. IN: Proceedings of the 20th International Conference on Composite Materials. Copenhagen, Denmark.
RMJ Groh, PM Weaver (2015). Mass Optimization of Variable Angle Tow, Variable Thickness Panels with Static Failure and Buckling Constraints. IN: Proceedings of AIAA SciTech: 56th AIAA/ASME/ASCE/AHS/ASC Structures, structural dynamics and materials conference. Kissimmee, FL, USA.
Collier Research HyperSizer/AIAA Structures Best Paper Award at AIAA SciTech: 56th AIAA/ASME/ASCE/AHS/ASC Structures, structural dynamics and materials conference. Kissimmee, FL, USA.
Ian Marshall’s Award for Best Student Paper at the 17th International Conference on Composite Structures, Porto, 2013.