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van Essen, S.M. (author), Scholcz, T.P. (author), Seyffert, Harleigh C. (author)Predicting wave impact design loads is crucial for ensuring safety and performance of maritime structures, but it is challenging due to the complexity and rarity of these events. Existing methods are mainly suitable for prediction of weakly non-linear responses, or are very computationally expensive. Highly nonlinear responses require a fidelity...conference paper 2023
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de Koster, P.B.J. (author), Brühl, M. (author), Wahls, S. (author)We propose a novel method to determine the average water depth from shallow, weakly nonlinear water waves that are approximated by the Korteweg-de Vries equation. Our identification method only requires free-surface measurements from two wave gauges aligned in the direction of wave propagation. The method we propose is based on comparing...conference paper 2022
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Koppen, S. (author), Hoes, Emma (author), Langelaar, M. (author), Frecker, Mary I. (author)Compliant mechanisms are crucial components in current and future high-precision applications. Topology optimization and additive manufacturing offer freedom to design complex compliant mechanisms that were impossible to realize using conventional manufacturing. Design for additive manufacturing constraints, such as the maximum overhang angle...conference paper 2021
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Sanghera, B.S. (author), Anand, N. (author), Souverein, Louis (author), Penin,, Loıc (author), Pini, M. (author)Axial turbine stages for gas generator cycle type rocket engines typically employ highly-loaded supersonic stator vanes. Consequently, the flow pattern downstream of the vanes is characterized by shock waves which induce high-frequency excitation on the subsequent rotor. For this reason, the optimal design of the stator is crucial in the context...conference paper 2021
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Hargrove, Brianne (author), Nastevska, Angela (author), Jovanova, J. (author), Frecker, Mary (author)With the shift from traditionally manufactured rigid-body mechanisms to lightweight compliant mechanisms (CMs) in additive manufacturing, researchers have become interested in modeling the behavior of CMs with high flexibility. Due to the large deformations that can be achieved, the use of CMs has expanded into applications such as energy...conference paper 2021
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van Adrichem, R.C. (author), Jovanova, J. (author)As machines and robots become a increasingly larger part of society, it is important that they are fully accepted. If the machines are not utilized as intended, it is not only a waste of time and energy, but also of valuable resources. This acceptance by humans of robots is based on how well the interaction with robots is trusted. Trust of...conference paper 2021
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Domazetovska, Simona (author), Gavriloski, Viktor (author), Jovanova, J. (author)The artificial intelligence (AI) field has encountered a turning point mainly due to advancements in machine learning, which allows systems to learn, improve, and perform a specific task through data without being explicitly programmed. Machine learning can be utilized with machining processes to improve product quality levels and...conference paper 2021
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Djokikj, Jelena (author), Rizov, Tashko (author), Jovanova, J. (author)Smart material graspers have shown potential for different applications in terms of functionality and actuation, especially in handling arbitrary shapes, fragile objects and complex 3D geometries. However, to take these initial designs further towards real applications, the challenge remains to determine the optimal size, shape, and passive...conference paper 2021
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Duc, Trung Tin Bui (author), Jovanova, J. (author)This research explores the possibility of upscaling bio-inspired designed soft robots in transport engineering application with the focus on grabbing and manipulating break bulk such as windmill blades or rolls of steel. Upscaling current state soft robotic systems includes challenges regarding the structural strength of the robot. Also...conference paper 2021
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Azevedo Vasconcelos, A.C. (author), Schott, D.L. (author), Aragon, A.M. (author), Jovanova, J. (author)This paper discusses an elastic metamaterial for filtering energy from certain frequencies of an incoming wave. The unit cell, which is composed by a single material, is built to obtain a local resonance band gap. Since Bloch-Floquet's periodic condition is enforced to the unit cell, the dynamic characteristics of the metamaterial is obtained...conference paper 2021
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Brühl, M. (author), Wahls, S. (author), Barranco Granged, Ignacio (author), Liu, Philipp L.-F. (author)Bores propagating in shallow water transform into undular bores and, finally, into trains of solitons. The observed number and height of these undulations, and later discrete solitons, is strongly dependent on the propagation length of the bore. Empirical results show that the final height of the leading soliton in the far-field is twice the...conference paper 2020
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Wahls, S. (author), Brühl, M. (author), Fan, Yang-Ming (author), Huang, Ching-Jer (author)Nonlinear Fourier Analysis (NFA) is a powerful tool for the analysis of hydrodynamic processes. The unique capabilities of NFA include, but are not limited to, the detection of hidden solitons and the detection of modulation instability, which are essential for the understanding of nonlinear phenomena such as rogue waves. However, even though...conference paper 2020
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Domazetovska, Simona (author), Ivanoski, Kristijan (author), Josifovska, Stefani (author), Slavkovski, Viktor (author), Jovanova, J. (author)Inspired by the movement of a turtle in nature, a low-budget turtle-like robot was designed and developed to operate on natural terrain. Applying affordable additive manufacturing (3D printing) leads into creating unique 3-D structure with potential of flexibility, multi-functionality and multi-movement. By implementing solar panels, the...conference paper 2020
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Changoski, Vasko (author), Domazetovska, Simona (author), Anachkova, Maja (author), Jovanova, J. (author)The space exploration activities are merging new technologies in order to develop systems challenged to achieve capabilities for high mission experience. Inspired by the numerous applications in space exploration, with the integration of shape memory alloys (SMAs), a 3D printed continuous All Terrain Grasper Transport (AT-GT) vehicle with...conference paper 2020
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Nastevska, Angela (author), Jovanova, J. (author), Frecker, Mary (author)Large scale structures can benefit from the design of compliant joints that can provide flexibility and adaptability. A high level of deformation is achieved locally with the design of flexures in compliant mechanisms. Additionally, by introducing contact-aided compliant mechanisms, nonlinear bending stiffness is achieved to make the joints...conference paper 2020
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Mkhoyan, T. (author), Thakrar, Nisarg Rashmin (author), De Breuker, R. (author), Sodja, J. (author)In this study, the design and development of an autonomous morphing wing concept were investigated. This morphing wing was developed in the scope of, the Smart-X project, aiming to demonstrate in-flight performance optimisation. This study proposed a novel distributed morphing concept, with six Translation Induced Camber (TRIC) morphing...conference paper 2020
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Anand, N. (author), Rubino, A. (author), Colonna, Piero (author), Pini, M. (author)Turbomachinery blades characterized by highly-loaded, slender profiles and operating under unsteady flow may suffer from aeroelastic shortcomings, like forced response and flutter. One of the ways to mitigate these aeroelastic effects is to redesign the blade profiles, so as to increase aero-damping and decrease aero-forcing. Design...conference paper 2020
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Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)A flexible riser is a flexible pipe that transports materials between seafloor and topside structures. As oil and gas production heads to water depths greater than 3000 meters, huge hydrostatic pressure may cause the collapse failure of flexible risers. Generally, the collapse strength of a flexible riser is designed by considering the effects...conference paper 2019
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Streicher, Maximilian (author), Kortenhaus, Andreas (author), Altomare, Corrado (author), Hughes, Steven (author), Marinov, Krasimir (author), Hofland, B. (author), Chen, X. (author), Suzuki, T. (author), Cappietti, Lorenzo (author)Overtopping bore impact forces on a dike mounted vertical wall were measured in similar large-scale (Froude length scale factor 1-to-4.3) and small-scale (Froude length scale factor 1-to-25) models. The differences due to scale effects were studied, by comparing the up-scaled force measurements from both models in prototype. It was noted that if...conference paper 2019
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Dassanayake, Darshana T. (author), Raby, Alison (author), Antonini, A. (author)Estimation of impulsive wave loading on a cylinder upon a shoal, such as an offshore rock lighthouse constructed on a partially emerged offshore rock with a steep foreshore, poses a unique challenge to marine structural engineers. Large and small scale experimental investigations are the most feasible methods to study this phenomena. However,...conference paper 2019
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