| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Van Keulen, Fred
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2022Simultaneous topology and deposition direction optimization for Wire and Arc Additive Manufacturingcitations
- 2019A mold insert case study on topology optimized design for additive manufacturing
- 2019Topology optimization of an injection mold insert with additive manufacturing constraints
- 2019Improving the manufacturability of metal AM parts
- 2016Optimizing front metallization patternscitations
- 2011Topology optimization of planar shape memory alloy thermal actuators using element connectivity parameterization
- 2008Modeling of shape memory alloy shells for design optimization
- 2008Sensitivity analysis of shape memory alloy shells
- 2007Gradient-based design optimization of shape memory alloy active catheters
- 2007Design optimization of shape memory alloy active structures using the R-phase transformation
- 2006Sensitivity Analysis and Optimization of a Shape Memory Alloy Gripper
- 2006Uncertainty-based Design Optimization of Shape Memory Alloy Microgripper using Combined Cycle-based Alternating Anti-optimization and Nested Parallel Computing
- 2006Sensitivity Analysis of Shape Memory Alloy Shells
- 2006Topology Optimization of Shape Memory Alloy Actuators using Element Connectivity Parametriztion
- 2005Analysis and Design Techniques for Shape Memory Alloy Microactuators for Space Applications
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article
Topology optimization of planar shape memory alloy thermal actuators using element connectivity parameterization
Abstract
This paper presents the direct application of topology optimization to the design of shape memory alloy (SMA) thermal actuators. Because SMAs exhibit strongly nonlinear, temperature-dependent material behavior, designing effective multidimensional SMA actuator structures is a challenging task. We pursue the use of topology optimization to address this problem. Conventional material scaling topology optimization approaches are hampered by the complexity of the SMA constitutive behavior combined with large actuator deflections. Therefore, for topology optimization we employ the element connectivity parameterization approach, which offers improved analysis convergence and robustness, as well as an unambiguous treatment of nonlinear materials. A path-independent SMA constitutive model, aimed particularly at the NiTiR-phase transformation, is employed, allowing efficient adjoint sensitivity analysis. The effectiveness of the proposed SMA topology optimization is demonstrated by numerical examples of constrained and unconstrained formulations of actuator stroke maximization, which provide insight into the characteristics of optimal SMA actuators.Key words: shape memory alloys; NiTi; topology optimization; element connectivity parameterization; geometric nonlinearity; material nonlinearity