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Mak, Robin (author), Amoozandeh, A. (author), Radaelli, G. (author), Herder, J.L. (author)Differential mechanisms are remarkable mechanical elements that are widely utilized in various systems; nevertheless, conventional differential mechanisms are heavy and difficult to use in applications with limited design space. In this paper, a curved lightweight compliant type of differential mechanism is presented. This mechanism acquires...conference paper 2022
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de Wildt, T.E. (author), Boijmans, Anne R. (author), Chappin, E.J.L. (author), Herder, P.M. (author)This paper demonstrates an approach to assess, ex ante, the social acceptance of sustainable heating systems in city districts. More sustainable heating systems are required in city districts to reduce greenhouse gas emissions. However, these systems may lack social acceptance as they often require significant adjustments to homes and may...journal article 2021
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Lange, K.P.H. (author), Korevaar, G. (author), Nikolic, I. (author), Herder, P.M. (author)Industrial Symbiosis Networks (ISNs) consist of firms that exchange residual materials and energy locally, in order to gain economic, environmental and/or social advantages. In practice, ISNs regularly fail when partners leave and the recovery of residual streams ends. Regarding the current societal need for a shift towards sustainability, it is...journal article 2021
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de Jong, J. J. (author), Müller, A. (author), Herder, J.L. (author)Dynamic balance eliminates the fluctuating reaction forces and moments induced by high-speed robots that would otherwise cause undesired base vibrations, noise and accuracy loss. Many balancing procedures, such as the addition of counter-rotating inertia wheels, increase the complexity and motor torques. There exist, however, a small set of...journal article 2021
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Compliant Mechanisms That Use Static Balancing to Achieve Dramatically Different States of StiffnessKuppens, P.R. (author), Bessa, M.A. (author), Herder, J.L. (author), Hopkins, J. B. (author)Stiffness in compliant mechanisms can be dramatically altered and even eliminated entirely by using static balancing. This requires elastic energy to be inserted before operation, which is most often done with an additional device or preloading assembly. Adding such devices contrasts starkly with primary motivations for using compliant...journal article 2021
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Kuppens, P.R. (author), Bessa, M.A. (author), Herder, J.L. (author), Hopkins, J. B. (author)We introduce two essential building blocks with binary stiffness for mechanical digital machines. The large scale fully compliant mechanisms have rectilinear and rotational kinematics and use a new V-shaped negative stiffness structure to create two extreme states of stiffness by static balancing. The use of a mechanical bistable switch...journal article 2021
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Lange, K.P.H. (author), Korevaar, G. (author), Oskam, Inge (author), Nikolic, I. (author), Herder, P.M. (author)The viability of novel network-level circular business models (CBMs) is debated heavily. Many companies are hesitant to implement CBMs in their daily practice, because of the various roles, stakes and opinions and the resulting uncertainties. Testing novel CBMs prior to implementation is needed. Some scholars have used digital simulation models...journal article 2021
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Wang, M. (author), Ge, Daohan (author), Zhang, Liqiang (author), Herder, J.L. (author)Compliant micromechanisms (CMMs) acquire mobility from the deflection of elastic members and have been proven to be robust by millions of silicon MEMS devices. However, the limited deflection of silicon impedes the realization of more sophisticated CMMs, which often require larger deflections. Recently, some novel manufacturing processes have...review 2021
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Borcea, Ciprian S. (author), Broeren, F.G.J. (author), Herder, J.L. (author), Streinu, Ileana (author), van der Wijk, V. (author)Auxetic behavior refers to lateral widening upon stretching or, in reverse, lateral shrinking upon compression. When an initially auxetic structure is actuated by compression or extension, it will not necessarily remain auxetic for larger deformations. In this paper, we investigate the auxetic range in the deformation of a periodic framework...journal article 2021
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Kok, Sjaak (author), Radaelli, G. (author), Amoozandeh, A. (author), Herder, J.L. (author)Elastic neutral stability in compliant mechanisms is a remarkable appearance since it requires the energetic state of the structure to remain unchanged during a deformation mode. Several examples in literature require either plastic deformation or external constraints to be enforced to obtain a state of pre-stress and often require the use of...journal article 2021
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Amoozandeh, A. (author), Radaelli, G. (author), Herder, J.L. (author)A design tool for passive wrist support using compliant spatial beams as gravity balancer is presented. The aim of this assistive device is to reduce required effort for pronation-supination and flexion-extension by 70% to help patients with muscular weakness keeping their hand’s posture and doing daily tasks, while the forearm is rested. To...conference paper 2021
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Rommers, J. (author), van der Wijk, V. (author), Herder, J.L. (author)In this paper we present two new designs of spherical flexure joints, which are the compliant equivalent of a traditional ball-and-socket joint. The designs are formed by tetrahedron-shaped elements, each composed of three blade flexures with a trapezoidal shape, that are connected in series without intermediate bodies. This is new with...journal article 2021
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Feinberg, A. (author), Ghorbani, Amineh (author), Herder, P.M. (author)This study is a comprehensive literature review about the field of the urban commons and its diversity, which we investigate through the lens of the new commons. Acknowledging a potential for adaptive capacity in the urban commons, we classify its traits into ecosystem, socio-economic and institutional factors. To make our work more practical,...journal article 2021
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Feinberg, A. (author), Rogge, Nicole (author), Hooijschuur, E. (author), Ghorbani, Amineh (author), Herder, P.M. (author)This paper presents an agent-based model that explores the conditions for ongoing participation in community gardening projects. We test the effects of Ostrom’s well-known Design Principles for collective action and use an extensive database collected in 123 cases in Germany and two case studies in the Netherlands to validate it. The model...journal article 2021
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Amoozandeh, A. (author), Radaelli, G. (author), Herder, J.L. (author)A method to achieve symmetric kinetostatic behaviour in an extensive working range at the endpoint of an asymmetric spatial beam, using cross-section optimization, is presented. The objective function of the optimization is defined as expanding the beam working range to the desired region, simultaneously maximizing symmetric behaviour in it....book chapter 2021
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- Ale Ebrahim Dehkordi, Molood (author), Ghorbani, Amineh (author), Herder, P.M. (author), Farjam, Mike (author), Forsman, Anders (author), van Weeren, René (author), De Moor, Tine (author), Bravo, Giangiacomo (author) conference paper 2021
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Broeren, F.G.J. (author), van der Wijk, V. (author), Herder, J.L. (author)In this paper, a pseudo-rigid body model is proposed for the analysis of a spatial mechanical metamaterial and its application is demonstrated. Using this model, the post-buckling behavior of the mechanical metamaterial can be determined without the need to consider the whole elastic structure, e.g., using finite-element procedures. This is done...journal article 2020
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de Wildt, T.E. (author), Chappin, E.J.L. (author), van de Kaa, G. (author), Herder, P.M. (author), van de Poel, I.R. (author)This paper explores capability conflicts in the deployment of decentralised energy systems and identifies the affected population. These systems have positive societal impacts in terms of sustainability and consumer empowerment, but they are not accessible to all and their deployment may increase socio-economic inequalities. The societal...journal article 2020
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Fouladvand, J. (author), Mouter, N. (author), Ghorbani, Amineh (author), Herder, P.M. (author)Energy communities are key elements in the energy transition at the local level as they aim to generate and distribute energy based on renewable energy technologies locally. The literature on community energy systems is dominated by the study of electricity systems. Yet, thermal energy applications cover 75% of the total energy consumption in...journal article 2020
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Tschiersky, Martin (author), Hekman, Edsko E.G. (author), Brouwer, Dannis M. (author), Herder, J.L. (author), Suzumori, Koichi (author)In this letter we demonstrate a pneumatic bending actuator for upper-limb assistive wearable robots which uses thin McKibben muscles in combination with a flexure strip. The actuator features both active soft actuation and passive gravity support, and in terms of force transmission bridges the gap between the classic rigid type actuators and...journal article 2020