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[CT127]

Session Date & Time : 5D (Aug.25, 15:30-17:10)
Type : Contributed Talk
Abstract : Modern responsive materials such as liquid crystal elastomers (LCEs) can be pre-programmed to undergo spatially inhomogeneous deformations in response to external stimuli such as heat and light. Shape-programming of LCEs has been the subject of intense research in recent years, resulting in the discovery of patterning designs and techniques that allow flat 2D sheets to assume target geometries upon activation. In this talk, we present recent mathematical, computational and experimental advances in shape-programming of LCEs.
Classification : 74-04, 74-10, 74S05, 74M05, 74G65
Author(s) :
- Daniel Duffy (University of Cambridge)
- Cyrus Mostajeran (Nanyang Technological University)
- John Simeon Biggins (University of Cambridge)
- Timothy J White (University of Colorado Boulder)
- Mark Warner (University of Cambridge)

Session Date & Time : 5D (Aug.25, 15:30-17:10)
Type : Contributed Talk
Abstract : Numerical tools, including finite element simulations, are considered to investigate the effect of initial voids inside concrete on the mechanical behavior of steel-concrete composite structures in compression. A refined numerical strategy is first defined, including a particular care on the relations between each structural component. Due to high computational cost, progressive numerical simplifications are then discussed to conclude in the most acceptable simplified hypothesis. A parametric study is finally launched and perspectives are discussed.
Classification : 74-10, 74S05, 74R05, simulation, damage models, structural behaviour
Author(s) :
- Ludovic JASON (Université Paris-Saclay, CEA, Service d'Études Mécaniques et Thermiques)

Session Date & Time : 5D (Aug.25, 15:30-17:10)
Type : Contributed Talk
Abstract : We present a reduced-order continuum model for the bulldozing of an immersed, sedimented granular material by a rigid piston in a fluid filled gap between two parallel plates. In our model, the granular pile and the overlying fluid layer evolves as coupled thin-films. We solve our model numerically for a variety of different scenarios to develop insight into the interactions between wall friction, internal viscous-like stresses, and fluid flow both above and through the pile.
Classification : 74-10, 76-10
Author(s) :
- Liam Morrow (University of Oxford)
- Chris MacMinn (University of Oxford)

Session Date & Time : 5D (Aug.25, 15:30-17:10)
Type : Contributed Talk
Abstract : The impact of an internal energy source on an anisotropic fluid-saturated poro-elastic layer over a non-homogeneous semi-infinite medium is presented. The poroelastic layer is coated with a thin elastic layer. The Fourier transform and Green’s function techniques are applied to analyse the velocity profile of Love-type wave propagation. Error analysis between phase velocity with and without damping has been shown. It is found that the dispersiveness is caused by the non-homogeneity of the semi-infinite medium.
Classification : 74-10, 74B10, 74H05, 74H45, 74J15
Author(s) :
- Dipendu Pramanik (Department of Mathematics, Indian Institute of Technology Indore)
- Santanu Manna (Department of Mathematics, Indian Institute of Technology Indore)

Session Date & Time : 5D (Aug.25, 15:30-17:10)
Type : Contributed Talk
Abstract : The study analyzes the characteristics of the bending edge wave on a semi-infinite Kirchhoff plate having a stationary crack on the plate and supported by an elastic foundation. The non-local elasticity theory is used to investigate the effect of non-local stress on the propagation of edge waves on the crack plate. Due to the presence of the crack, the stress intensity factor related to the edge wave propagation will be discussed via numerical analysis.
Classification : 74-10, 74J15, 74K20, Surface waves in elastic plate
Author(s) :
- Rahul Som (Department of Mathematics, Indian Institute of Technology Indore, India )
- Santanu Manna (Assistant Professor, Indian Institute of Technology Indore)