Numerical modelling of electro‐viscoelasticity for fibre reinforced electro‐active polymers
نویسندگان
چکیده
Abstract Electro‐active polymers (EAP) are smart materials that can deform dramatically and quasi‐instantaneously in response to an applied electric field. These properties make them suitable be used as soft robotic actuators. As any passive rubber‐like material, those electro‐sensitive components quasi‐incompressible may show pronounced time‐dependent hysteresis behaviour. The direction of the field induced deformation tuned by incorporating stiff fibres a relatively EAP, which renders anisotropic mechanical whole composite. contribution at hand presents constitutive model is for simulation electro‐viscoelastic behaviour transversely isotropic EAP. material based on additive split total energy function into purely mechanical, electrical coupled electro‐mechanical contributions. part further decomposed parts. For contributions, formulations both perfectly linear dielectric nonlinear (deformation dependent) presented. Regarding numerical implementation, mixed quasi‐inextensible finite element developed. In addition displacement potential, four additional variables introduced. capabilities proposed theory its treatment demonstrated through simulations several actuator structures. utilization shown improve convergence solution, allowing complex loading scenarios fibre reinforced EAP efficient manner.
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1 Research and Teaching Associate, Ph.D.c., Institute of Building Structures and Structural Design (ITKE), University of Stuttgart, Stuttgart, Germany, [email protected] 2 Research and Teaching Associate, Ph.D.c., Institute of Building Structures and Structural Design (ITKE), University of Stuttgart, Stuttgart, Germany, [email protected] 3 Professor, Institute of Buil...
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ژورنال
عنوان ژورنال: Proceedings in applied mathematics & mechanics
سال: 2021
ISSN: ['1617-7061']
DOI: https://doi.org/10.1002/pamm.202000118