16 Hits in 3.9 sec

Instabilities in the axisymmetric magnetoelastic deformation of a cylindrical membrane

Narravula Harshavardhan Reddy, Prashant Saxena
2018 International Journal of Solids and Structures  
A variational formulation based on magnetization is used and the computational results obtained by using four elastic constitutive models (neo-Hookean, Mooney-Rivlin, Ogden, and Arruda-Boyce) are studied  ...  For example, neo-Hookean model can not predict strain hardening; most Mooney-Rivlin models can not predict bulging in long cylindrical membranes while neo-Hookean model does (Skala, 1970) .  ...  Hence the results for a neo-Hookean material only will be discussed further.  ... 
doi:10.1016/j.ijsolstr.2017.12.015 fatcat:rgrdhskd2zc5djv3hiiz3r2y7a

Buckling soft tensegrities: Fickle elasticity and configurational switching in living cells

M. Fraldi, S. Palumbo, A.R. Carotenuto, A. Cutolo, L. Deseri, N. Pugno
2019 Journal of the mechanics and physics of solids  
C-D) Equivalent shear modulus KS (and, in the inset, nominal stress PS) versus the equivalent shear strain γeq, for Hencky and neo-Hookean elements.  ...  The results, obtained by means of Hencky and neo-Hookean models, did not exhibit significant differences in terms of deformed configurations and therefore an unique plot was reported.  ... 
doi:10.1016/j.jmps.2018.10.017 fatcat:l4dn7bfvizgkxouk62jvs4ay5a

Strain limiting for soft finger contact simulation

A. G. Perez, G. Cirio, F. Hernandez, C. Garre, M. A. Otaduy
2013 2013 World Haptics Conference (WHC)  
In this paper, we propose an algorithm to simulate nonlinear elasticity under frictional contact, with the goal of establishing a model-based strategy to command haptic devices and to render direct hand  ...  The key novelty in our algorithm is an approach to model the extremely nonlinear elasticity of finger skin and flesh using strainlimiting constraints, which are seamlessly combined with frictional contact  ...  However, simulations of human tissue in computational mechanics resort to hyperelastic biologically-inspired models such as Ogden, Neo-Hookean or Mooney-Rivlin [22] .  ... 
doi:10.1109/whc.2013.6548388 dblp:conf/haptics/PerezCHGO13 fatcat:niasnnc3yncmlm644jwd7xwqaa

Dynamic deformables

Theodore Kim, David Eberle
2022 ACM SIGGRAPH 2022 Courses  
Simulating dynamic deformation has been an integral component of Pixar's storytelling since Boo's shirt in Monsters, Inc. (2001).  ...  This new formulation is only a starting point for creating a simulator that is up challenges of a production environment.  ...  Many of these improvements have been spread across technical papers and talks presented the last two years at SIGGRAPH: • Stable Neo-Hookean Flesh Simulation, Breannan Smith, Fernando de Goes, Theodore  ... 
doi:10.1145/3532720.3535628 fatcat:64aso4dd5vbb5flouo5hsm5jva

The material point method for simulating continuum materials

Chenfanfu Jiang, Craig Schroeder, Joseph Teran, Alexey Stomakhin, Andrew Selle
2016 ACM SIGGRAPH 2016 Courses on - SIGGRAPH '16  
Neo-Hookean Neo-Hookean is one of the most common nonlinear hyperelastic models for predicting large deformations of elastic materials.  ...  For Neo-Hookean, the result is P = µ(F − F −T ) + λ log(J)F −T . (48) Note that ∂P ∂F is further needed for implicit integration. We provide in Section 6.4 a practical way to do so. .  ...  been initialized (i.e. each particle has a mass m p , volume V 0 p , initial position x p , initial velocity v p , affine matrix B p and their material-related parameters (such as µ and λ in the case of Neo-Hookean  ... 
doi:10.1145/2897826.2927348 dblp:conf/siggraph/JiangSTSS16 fatcat:53ln4yklqrhcffljjbhhan4gt4

On a new model for inhomogeneous volume growth of elastic bodies

Markus Böl, Antonio Bolea Albero
2014 Journal of The Mechanical Behavior of Biomedical Materials  
In doing so, we use the elementary isotropic Neo-Hookean material for the purely mechanical characteristics.  ...  Three types of cable ties, differ from each other by their rigidities, have been considered using the Neo-Hookean material law. The used parameters are summarised in Table 2 .  ... 
doi:10.1016/j.jmbbm.2013.01.027 pmid:23608182 fatcat:pjfud2tjsvb6tizmam4octos74

Computational Design of Skinned Quad-Robots

Xudong Feng, Jiafeng Liu, Yin Yang, Huamin Wang, Hujun Bao, Bernd Bickel, Weiwei Xu
2019 IEEE Transactions on Visualization and Computer Graphics  
We validate the feasibility of designs generated with our system through physics simulations and with a physically-fabricated prototype.  ...  We opt to model the soft skin using the neo-Hookean material model [77] because it has been demonstrated to be well suited for robotic skins made out of silicone [78] We propose a computational fabrication  ...  The muscle and flesh surrounding the skeleton provides diverse morphologies, enriched expressivity.  ... 
doi:10.1109/tvcg.2019.2957218 pmid:31804937 fatcat:pj5a6bopajamxkfktec2e5wuu4

Growth induced buckling instability of anisotropic tube and its application in wound edge instability

Le Yang, Tarynn M. Witten, Ramana M. Pidaparti
2017 Curved and Layered Structures  
Method Strain energy functions When we need to describe isotropic material, the isotropic Neo-Hookean model is adopted: W iso = µ iso 2 (︁ α 2 1 + α 2 2 − 2 )︁ (1) where α 1 and α 2 are strains in radical  ...  [1] and Nicholas Fang [2] , and are revealed to be related to growth of the soft flesh confined by outer stiff layer.  ... 
doi:10.1515/cls-2017-0013 fatcat:6osuv3nkpjep7htke5s6f6wqyu

Bioinspired Multiscale Wrinkling Patterns on Curved Substrates: An Overview

Yinlong Tan, Biru Hu, Jia Song, Zengyong Chu, Wenjian Wu
2020 Nano-Micro Letters  
Up to date, the wrinkling morphologies on solid/hollow core-shell spheres and cylinders have been simulated and selectively produced.  ...  [155] investigated the wrinkling and post-wrinkling morphology of a neo-Hookean core-shell sphere subjected to the shrinkage of the core through theoretical analysis and non-linear simulations.  ...  Growth Yes [21] Cantaloupe Spheroidal shape Buckle 10 −3 Epidermis/flesh Growth Yes [21] analyzed and simulated Elastic tube Plastic coating CVD Stretching Releasing 500 µm 50 µm  ... 
doi:10.1007/s40820-020-00436-y pmid:34138101 fatcat:4mgeemhmijechezi3pdhqubp44

Fast simulation of skeleton-driven deformable body characters

Junggon Kim, Nancy S. Pollard
2011 ACM Transactions on Graphics  
We propose a fast physically-based simulation system for skeleton-driven deformable body characters.  ...  Detailed discussions of our engineering decisions for speed and accuracy of the simulation system are presented in the article.  ...  For example, Neo-Hookean material has behavior opposite to StVK material in large compression, becoming rapidly stiffened as it is compressed.  ... 
doi:10.1145/2019627.2019640 fatcat:3v6czjvm7bcy7gdkhf266h3eve

Experimental and numerical investigation of soft impact loading on aircraft materials

Jie Zhou, Maria Charalambides, John Dear, Aviation Industry Corporation Of China (Firm)
As a result, the relationship between true stress and strain is obtained and constitutive equations are established using the hyperelastic models, i.e. the Ogden, Mooney-Rivlin and Neo-Hookean.  ...  A validated FE simulation is therefore presented, which can be used to simulate [...]  ...  Equations 3-4, 3-5 and 3-6 correspond to the models that were considered, namely the Ogden, Mooney-Rivlin and Neo-Hookean models.  ... 
doi:10.25560/55868 fatcat:gfuf2yz5bvgqdlia3wl3jgnabm

NIMBLE: A Non-rigid Hand Model with Bones and Muscles [article]

Yuwei Li, Longwen Zhang, Zesong Qiu, Yingwenqi Jiang, Nianyi Li, Yuexin Ma, Yuyao Zhang, Lan Xu, Jingyi Yu
2022 arXiv   pre-print
Non-rigid Elasticity Term 𝐸 𝑛𝑒 To capture non-rigid deformation of hands, we define 𝐸 𝑛𝑒 using the Neo-Hookean elastic function, which has been proven effective for muscle and flesh simulation in  ...  We iterate the whole process of registration and parameter learning several times to get a stable result.  ... 
arXiv:2202.04533v4 fatcat:vcgvldis7jhjbmauxcygf3j64i

Finite Element Analysis and Optimization Design of Combined Vehicle Suspension Girder Lateral Stabilizer Bar Bushing

Yinan Zhu, Daoshuang Ceng, Nawen Lin
2016 Proceedings of the International Symposium on Mechanical Engineering and Material Science   unpublished
At present, most of the use of constitutive equations is the Mooney-Rivlin model proposed by Rivlin in 1976 , and the Hookean -Neo model proposed by Pence et al [13] .  ...  pole with rubber lining Suites lack of sustained tightening force, stable rod transverse jump move more likely, suspension control performance will be affected; (3) Flesh of the bottom of the product,  ... 
doi:10.2991/ismems-16.2016.42 fatcat:i3bnrtre65difda5jr26joaxfa

Poster Session

2007 Journal of Biomechanical Science and Engineering  
The cytoplasm, nucleus, and substrate were modeled as neo-Hookean material.  ...  They quantified the elasticity of the cytoplasm and nucleus through compression testing, and carried out a finite element analysis using an axisymmetric model of neo-Hookean material (2) .  ...  between New Carbon Fiber and Glass Fiber of The Comparison of High School and College Elite Swimmers for Start Performance A STUDY OF MATERIAL AND FRICTIONAL PROPERTIES OF THE HUMAN FINGERTIP TO SIMULATE  ... 
doi:10.1299/jbse.2.s89 fatcat:hr67ggaqdnbj5bqqd3o3y5xpmq

Elastomeric hoof boots

John Hanley
The loadcase options are shown in Results of the Neo-Hookean analysis An initial analysis was carried out and results were collated.  ...  The plausibility of a neo-Hookean model can initially be considered by comparing the value of twice the constant C 10 with the initial rigidity modulus G 0 .  ... 
doi:10.21427/d7ng7k fatcat:rrkadayvvreihdptseegde54oi
« Previous Showing results 1 — 15 out of 16 results