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A theory of constrained swelling of a pH-sensitive hydrogel
Many engineering devices and natural phenomena involve gels that swell under the constraint of hard materials. The constraint causes a field of stress in a gel, and often makes the swelling inhomogeneous even when the gel reaches a state of equilibrium. To analyze inhomogeneous swelling of a pH-sensitive gel, we implement a finite element method in the commercial software ABAQUS. The program is attached here. Contact Shenqiang Cai (email@example.com) for a description of the program.