Pixar explains his new digital technique for modeling flesh movements Stable Neo-Hookean Flesh Simulation Non-linear hyperelastic energies play a key role in capturing the fleshy appearance of virtual characters. Real-world, volume-preserving biological tissues have Poisson's ratios near 1/2, but numerical simulation within this regime is notoriously challenging. In order to robustly capture these visual characteristics, we present a novel version of Neo-Hookean elasticity. Our model maintains the fleshy appearance of the Neo-Hookean model, exhibits superior volume preservation, and is robust to extreme kinematic rotations and inversions. We obtain closed-form expressions for the eigenvalues and eigenvectors of all of the system's components, which allows us to directly project the Hessian to semi-positive-definiteness, and also leads to insights into the numerical behavior of the material. These findings also inform the design of more sophisticated hyperelastic models, which we explore by applying our analysis to Fung and Arruda-Boyce elasticity. We provide extensive comparisons against existing material models.
Police chase thieves on motorcycles (Brazil) In Brazil, military police chase motorcycle thieves into Sao Paulo alleys. Military police are considered military personnel by the Brazilian constitution, However, perform police duties.
How do you sleep! Babies are in full readiness when mom comes into the room to check if they have slept.
The alien jellyfish On April 24, 2016 during an underwater mission in the Mariana Trench at a depth of 3,700 meters, scientists recorded a jellyfish that nobody had seen before. The Medusa was discovered near a site called Enigma Seamount, and according to researchers at the National Oceanic and atmospheric observation (OBTAIN), will be named as a new species belonging to the genus Crossota hydromedusa. The Mariana Trench, with 11 km depth, It is the deepest point in the oceans and the Earth's crust.
The wrestler cat We do not know what made the little stuffed animal, but the wrestling match lasted only a few seconds.
The driver was fiddling with his cell phone A driver in Vladivostok, Russia stares at his mobile screen while driving, and collides with a car in front of him. The driver's seat is on the right.
Lightning striking in Britain Telford On May 27, 2018, a huge storm above the town of Britain Telford lasted over 4 hours with large consecutive lightning.