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A Modeling Strategy for Predicting the Properties of Paraffin Wax Actuators

Institute for Production Engineering and Forming Machines, Technische Universität Darmstadt, 64287 Darmstadt, Germany
Author to whom correspondence should be addressed.
Actuators 2018, 7(4), 81;
Received: 26 October 2018 / Revised: 16 November 2018 / Accepted: 27 November 2018 / Published: 28 November 2018
PDF [4966 KB, uploaded 28 November 2018]


In production processes, many adjustment tasks have to be carried out manually. In order to automate these activities, there is a need for cost and space efficient actuators that can provide comparatively high forces. This paper presents a novel actuator concept based on the phase change material paraffin wax. Furthermore, a numerical modelling strategy is introduced enabling the prediction of actuator properties. The model considers paraffin wax as a deformable body. The temperature-dependent volume expansion data of the paraffin wax is obtained experimentally to allow for a realistic description of the thermal-mechanical properties. The simulation is verified, using experimental data from actuators with varying paraffin wax volumes. With a maximum deviation of 6%, the simulations show a good agreement with the experiments. View Full-Text
Keywords: paraffin wax; actuator; phase change material; simulation; FEM paraffin wax; actuator; phase change material; simulation; FEM

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Mann, A.; Bürgel, C.M.; Groche, P. A Modeling Strategy for Predicting the Properties of Paraffin Wax Actuators. Actuators 2018, 7, 81.

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