25 papers · ranked by Valyu relevance
Dan-Cornelius Savu, Andrew Higgins
- The shape of a flat lightsail was perturbed to test its resistance to deformation. - Quasi-static analytical expressions were developed for the critical stability point. - Dynamics of the perturbed lightsail was studied using numerical models. - Analytical expressions predict the stability boundary seen in numerical…
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…
Ilona Szewczak, Patryk Rozylo, Xueyan Liu
Steel structure designers frequently encounter the need to reinforce hot-rolled compressed steel elements. This is particularly common in the case of compressed truss bars in steel truss girders. Typically, reinforcement is designed using bars or flat bars welded to the compressed element. However, welding technology…
Paulina Obara, Justyna Tomasik, Enrico Babilio, Michele Bacciocchi
The paper contains a parametric analysis of tensegrity structures subjected to time-independent external loads. A complete dynamic stability analysis is a three-step process. The first stage involves the identification of self-stress states and infinitesimal mechanisms. The next stage concentrates on the static and…
Paweł Zabojszcza, Urszula Radoń, Mario D’Aniello, Marco Andreini + 1 more
'Roberto Tartaglia'] The main subject of this paper is an optimization of steel roof framing used as a load-bearing structure in commercial pavilions. The authors wanted to draw attention to the necessity to take into account the uncertainty in the description of design parameters during optimization. In the first…
Fraddosio Aguinaldo, Lasorella, Celeste, Piccioni Mario Daniele + 1 more
In this paper, first the non-standard limit analysis 2D problem for reinforced masonry structures is suitably reformulated, giving a innovative computational framework for the evaluation of the strengthening effects of tensile reinforcements. This framework is used for designing optimized reinforcements for masonry…
Fraddosio Aguinaldo, Lasorella, Celeste, Piccioni Mario Daniele + 1 more
In this paper, first the non-standard limit analysis 2D problem for reinforced masonry structures is suitably reformulated, giving a innovative computational framework for the evaluation of the strengthening effects of tensile reinforcements. This framework is used for designing optimized reinforcements for masonry…
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…
Eszter Fehér
This work examines the snap-through behavior of clamped-clamped kirigami arches made from initially flat, thin, cut sheets under increasing vertical concentrated load acting at midspan. A two-parameter, symmetric pattern is introduced to conduct a numerical parameter analysis across three different support distances.…
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…
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…
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…
Veerupaksh Singla, Qiyuan Zhao, Brett Savoie
The absence of computational methods to predict stressor-specific degradation susceptibilities represents a significant and costly challenge to the introduction of new materials into applications. Here, a machine-learning framework is developed that predicts stressor-specific stability scores from computationally…
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…
Fraddosio Aguinaldo, Lasorella, Celeste, Piccioni Mario Daniele + 1 more
In this paper, first the non-standard limit analysis 2D problem for reinforced masonry structures is suitably reformulated, giving a innovative computational framework for the evaluation of the strengthening effects of tensile reinforcements. This framework is used for designing optimized reinforcements for masonry…
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…
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…
Gangzheng Yi, Lian Duan, Yuan Gao, Yang Sun + 1 more
To investigate the effects of different gait patterns on knee joint biomechanics and dynamic stability during stair ascent. Fourteen healthy males were recruited to ascend stairs using two distinct gait patterns: the “single-step” (leading with the same leg) and “cross-step” (alternating legs) strategies. Kinematic and…
Anna C. Render, Joseph P. Cusumano, Jonathan B. Dingwell
People with balance impairments often struggle performing turns or lateral maneuvers, which can increase risk of falls and injuries. Here we asked how people’s mediolateral balance is impacted when walking on non-straight winding paths. Twenty-four healthy adults (12F/12M; 25.8±3.5 yrs) participated. Each walked on…