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- W4324302568 abstract "Using a mean field approach and simulation, we study the non-linear mechanical response of the vertex model (VM) of biological tissue under compression and dilation. The VM is known to exhibit a transition between rigid and fluid-like, or floppy, states driven by geometric incompatibility. Target perimeter and area set a target shape which may not be geometrically achievable, thereby engendering frustration. Previously, an asymmetry in the linear elastic response was identified at the rigidity transition between compression and dilation. Here we show and characterize how the asymmetry extends away from the transition point for finite strains. Under finite compression, an initially solid VM can totally relax perimeter tension, and thereby have reduced bulk and shear modulus. Conversely, an initially floppy VM under dilation can rigidify and have a higher bulk and shear modulus. These observations imply that re-scaling of cell area shifts the transition between rigid and floppy states. Based on this insight, we calculate the re-scaling of cell area engendered by intrinsic curvature and write a prediction for the rigidity transition in the presence of curvature. The shift of the rigidity transition in the presence of curvature for the VM provides a new metric for predicting tissue rigidity from image data for curved tissues in a manner analogous to the flat case." @default.
- W4324302568 created "2023-03-16" @default.
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- W4324302568 date "2023-03-10" @default.
- W4324302568 modified "2023-10-18" @default.
- W4324302568 title "Finite Elasticity of the Vertex Model and its Role in Rigidity of Curved Cellular Tissues" @default.
- W4324302568 doi "https://doi.org/10.48550/arxiv.2303.06224" @default.
- W4324302568 hasPublicationYear "2023" @default.
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