#elasticity

Maybe in my #systemdynamics bubble someone can answer this question regarding #elasticity in a continuous-time dynamical systems context (i.e., it is a factor scaling fractional rates)?

Why is this (very natural) momentum-related formulation not more widespread in models?

https://math.stackexchange.com/q/4944214/200681

This planet-like balloon started out as two elastomer sheets, heat-sealed together into a spiraling tube. As the balloon was inflated, it changed from flat to a saddle-like shape. With more air, the pressure inside increased, triggering an instability that caused the middle of the balloon to bulge. As inflation continued, the central bulge expanded, unbonding layer after layer of the seal. Even late in inflation, the balloon maintains hints of its original shape in the form of a ring around the Jovian bulge in the middle. (Image credit: N. Vani et al.)

https://fyfluiddynamics.com/2024/05/bulging-balloons/

#2024gosmp #balloons #elasticity #fluidDynamics #instability #physics #science #softMatter

Beautiful capture of network-like patterns known as "force chains"

This Figure 2 of https://doi.org/10.1093/gji/ggae009 by D.W. Vasco and co-authors

Wikepedia article on force chains: https://en.wikipedia.org/wiki/Force_chain

#physics #geomechanics #hydrogeophysics #mechanics #theory #modelling #elasticity #anelasticity #transient #deformation #creep #deformation #force #rock #mineral #rheology #seismic #california #science #research #ras #gji #photography #experiment

#WorldAnimalDay - #sloth IOB spotlight-
A Horse of a Different Color?: Tensile Strength and #Elasticity of Sloth Flexor #Tendons
A M Mossor, B L Austin, J A Avey-Arroyo, M T Butcher

https://doi.org/10.1093/iob/obaa032

#biology #muscles #science

Happy birthday to French mathematician, physicist and philosopher Marie-Sophie Germain (1776 – 1831), known as Sophie. She taught herself mathematics using books in her father's library and by corresponding with leading mathematicians of her day, including Lagrange, Legendre and Gauss, …

#linocut #printmaking #sciart #mathart #SophieGermain #ChladniFigures #mathematician #Fermat #womenInSTEM #physicist #elasticity #Gauss #histstm #printmaker #ReliefPrint #WomensHistoryMonth

In the #2D #elasticity, #equilibrium of #stresses can be represented on an infinitesimal rectangular element with components of both #DirectStress and #ShearStress generally acting on all four edges. If you were to rotate the rectangle, the stresses change in a precisely orchestrated fashion. In the orientation where the shear stress components vanish, we get what are called #PrincipalStresses and they and their directions can be ascertained precisely through #eigenvalue analysis... 1/2

Enormous CNC Router Uses Clever Tricks to Improve Performance - CNC machines made from wood and 3D-printed parts may be popular, but they aren’t always practical ... - https://hackaday.com/2020/12/16/enormous-cnc-router-uses-clever-tricks-to-improve-performance/ #deflection #elasticity #stressskin #torsionbox #3dprinted #precision #cnchacks #router #mpcnc #cnc