23 papers · ranked by Valyu relevance
Jean‐François Arnoldi, Bart Haegeman
We exhibit a fundamental relationship between measures of dynamical and structural stability of equilibriums, arising from real dynamical systems. We show that dynamical stability, quantified via systems local response to external perturbations, coincides with the minimal internal perturbation able to destabilize the…
Allan McRobie, Cameron Millar, William F. Baker
This paper presents a graphical method for determining the linearized stiffness and stability of prestressed trusses consisting of rigid bars connected at pinned joints and which possess kinematic freedoms. Key to the construction are the rectangular areas which combine the reciprocal form and force diagrams in the…
Paulina Obara, Justyna Tomasik, Wensheng Wang, Qinglin Guo + 1 more
The paper contains a parametric analysis of tensegrity structures subjected to periodic loads. The analysis focuses on determining the main region of dynamic instability. When load parameters fall within this region, the resulting vibration amplitudes increase, posing a risk to the durability of structures. The study…
Susanne Pettersson, Van M. Savage, Martin Nilsson Jacobi
Dynamical shifts between the extremes of stability and collapse are hallmarks of ecological systems. These shifts are limited by and change with biodiversity, complexity, and the topology and hierarchy of interactions. Most ecological research has focused on identifying conditions for a system to shift from stability…
Alireza Tabrizikahou, Mieczysław Kuczma, Piotr Nowotarski, Małgorzata Kwiatek + 2 more
'Małgorzata Kwiatek' 'Ahad Javanmardi' 'Edyta Pawluczuk'] Every year, structural flaws or breakdowns cause thousands of people to be harmed and cost billions of dollars owing to the limitations of design methods and materials to withstand extreme earthquakes. Since earthquakes have a significant effect on…
Authors not listed
Encoding information in molecular arrangements on DNA origami nanostructures (DONs) provides the basis for novel concepts in molecular data storage and computing. To preserve their integrity over long timescales, the information-carrying DONs are often stored in a frozen state. Here, we investigate the effect of…
David Förster, Malte von Scheven
Assessment Authors: ['David Förster' 'Malte von Scheven'] The degree of static indeterminacy and its spatial distribution characterize load-bearing structures independent of a specific load case. The redundancy matrix stores the distribution of the static indeterminacy on its main diagonal, and thereby offers the…
Suraj Reddy
Materials with special geometrically designed microstructures, referred to as metamaterials, have gained significant attention in the world due to their unique properties of toughness and failureresistance. The ability to simply alter the internal geometry of almost any material to exponentially increase strength is…
Jing Ling, Yong Du, W. Peter Wuelfing, Nicole Buist + 4 more
Protein drugs exhibit challenges of biophysical and biochemical instability due to their structural complexity and rich dynamics. Solid-state biologics aim to enhance stability by increasing molecular rigidity within the formulation matrix, representing a primary category of drug products alongside sterile liquid…
Authors not listed
The growing global demand for lithium, coupled with its limited availability and rising costs, underscores the urgent need for alternative energy storage solutions. Sodium-based all-solid-state batteries (Na-ASSBs) offer a promising pathway due to sodium's abundance, cost-effectiveness, and favorable electrochemical…
Jianhua Li, Dewen Liu, Ahad Javanmardi
Research on the SSI effect on flat sites has yielded many valuable conclusions. However, current research on the impacts of various special local terrains on structural dynamics remains limited. For mountainous areas, it is common to construct houses in a multi-step, climbing, and laterally staggered architectural form…
Authors not listed
With the ever-increasing demand for atomistic structures representative of real-life systems as well as the ad-vent of exascale computers, it has now become necessary and possible to use advanced global optimization (GO) techniques to intelligently sample the potential energy surface (PES). Given the previous studies…
Foad Kiakojouri, Valerio De Biagi, Lorenza Abbracciavento, Jinyou Shao
'Jinyou Shao'] Bio-inspired solutions are widely adopted in different engineering disciplines. However, in structural engineering, these solutions are mainly limited to bio-inspired forms, shapes, and materials. Nature is almost completely neglected as a source of structural design philosophy. This study lists and…
Jaime Cervera Bravo, Laura Navas-Sánchez
This paper presents an algebraic approach that unifies both the elastic and limit theories of static structural analysis. This approach reveals several previously unpublished improvements, which are based on several dualities in the mathematical description. Firstly, we show a novel duality between the solutions to two…
Omar Aloui, David Orden, Landolf Rhode‐Barbarigos
Tensegrity structures are frameworks in a stable self-equilibrated prestress state that have been applied in various fields in science and engineering. Research into tensegrity structures has resulted in reliable techniques for their form finding and analysis. However, most techniques address topology and form…
Yizhou Liu, Jiliang Hu, Jeff Gore
The stability of ecological communities has a profound impact on humans, ranging from individual health influenced by the microbiome to ecosystem services provided by fisheries. A long-standing goal of ecology is the elucidation of the interplay between biodiversity and ecosystem stability, with some ecologists warning…
Authors not listed
The recent discovery of the self-healing capabilities of molecular crystals has shown significant efficiency, approaching nearly 100%, particularly when this process is coupled with a phase transition. This places these materials on par with other, better-studied soft materials, such as polymers. However, the physical…
Anne Chao, Robert K. Colwell, Johnny Shia, Simon Thorn + 12 more
When biodiversity–stability relationships are assessed from temporal patterns of species (or species assemblages) biomass or other key variables, ecological stability is commonly quantified as the inverse of the coefficient of variation (CV) or its square. However, just as biodiversity cannot be fully characterized by…
Eiji Nouchi, Tomoteru Oka, Noriyuki Kataoka, Yoshihisa Kawano + 1 more
The dynamic mechanism of a cellular cytoskeleton is essential for the role of the cell, and its accurate characterization has been a long-standing problem for cell scientists. A cytoskeleton’s vibrations are highly influenced by interactions of filamentous proteins mediated by axial vibration of the stiff microtubules…
Bart Haegeman, Jean-François Arnoldi, Shaopeng Wang, Claire de Mazancourt + 2 more
Ecological stability is a bewildering broad concept. The most common stability measures are asymptotic resilience, widely used in theoretical studies, and measures based on temporal variability, commonly used in empirical studies. We construct measures of invariability, defined as the inverse of variability, that can…
Aria Fathi, S. Mohsen Haeri, Mehrdad Palizi, Mehran Mazari + 2 more
'Cesar Tirado' 'Cheng Zhu'] Application of performance-based design (PBD) in earthquake geotechnical design codes has been gaining attention for the past decade. Strong vibrations (e.g., earthquake loading) may generate an uplift or a partial separation of shallow foundations from the underneath soil. To minimize the…
Hendrik Reimann, Sjoerd M. Bruijn
The walking human body is mechanically unstable. Loss of stability and falling is more likely in certain groups of people, such as older adults or people with neuromotor impairments, as well as in certain situations, such as when experiencing conflicting or distracting sensory inputs. Stability during walking is often…
Mauro Schulz, Maria Paola Santisi d’Avila
This research investigates the simultaneous effect of in-plane and transverse loads in reinforced concrete shells. The infinitesimal shell element is divided into layers (with triaxial behavior) that are analyzed according to the smeared rotating crack approach. The set of internals forces includes the derivatives of…