Finite bending solutions for layered gel beams

详细信息    查看全文

• 作者：P. Nardinocchi ; ^a ; ^{paola.nardinocchi@uniroma1.it" class="auth_mail" title="E-mail the corresponding author} ; E. Puntel^b ; ^{eric.puntel@uniud.it" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Morphing beams ; Swelling&ndash ; induced bending ; Shape control
• 刊名：International Journal of Solids and Structures
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：90
• 期：Complete
• 页码：228-235
• 全文大小：627 K

文摘

We investigate the swelling–induced bending of a gel bilayer beam with homogeneous beam–like components, when the beam is embedded in a solvent bath of assigned chemical potential. We set the problem within the limits of finite elasticity with large distortions, with these latter determined via chemical equilibrium, by the elastic modulus of the gel, the chemical potential of the bath and the solvent–gel interaction parameter. We borrow our method of solution from finite bending of soft and incompressible beams, and get a non dimensional nonlinear equation governing the solution of the problem, whose solution is validated through a campaign of numerical experiments based on a complete stress–diffusion model.